Murray 866086-00 User manual

Not for

Reproduction

Model No.

866079-00

866081-00

866083-00

866084-00

866085-00

866086-00

866087-00

80015485

Rev. -

Operator’s Manual

Manual del operador

Manuel utilisateur

Manual do Operador

Mwongozo wa Mwendeshaji

Kullanım Kılavuzu

Walk Behind Mowers

Cortacésped de empuje manual

Tondeuses poussées

Cortador de grama

Tembea Nyuma Ya Mashine Ya

Kukata Nyasi

Yaya Kumandalı Çim Biçme Makinesi

!

en - English

ar -



es - Español

fr - Français

pt - Português

sw - Kiswahili

tr - Türkçe

Not for

Reproduction

Thank You for purchasing this quality-built Murray™ mower. We’re pleased that you placed your confidence in the Murray

brand. When operated and maintained according to the instructions in this manual, your Murray mower will provide many years

of dependable service.

This manual contains safety information to make you aware of the hazards and risks associated with the machine and how

to avoid them. This machine is designed and intended only for finish cutting of established lawns and is not intended for any

other purpose. It is important that you read and understand these instructions thoroughly before attempting to start or operate

this equipment. Save these original instructions for future

reference.

Date of Purchase___________________________________________________________________________

Retailer___________________________________________________________________________________

Retailer’s Phone Number_____________________________________________________________________

Equipment

Model Number_______________________________________________________________________

Serial Number_______________________________________________________________________

Engine

Model________________________Type_______________________Code______________________

MURRAY is a trademark of

Briggs & Stratton Power Products Group, LLC.

2 www.murray.com

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Table of Contents

1. Intended use ............................................................................................................... 3

2. Technical specifications ...........................................................................................4

3. Features and controls ..............................................................................................4

4. Symbols and warnings .............................................................................................. 6

5. Instructions for safe operation ................................................................................. 7

6. Assembly ...................................................................................................................8

7. Adjustment ..............................................................................................................11

8. Operation ..................................................................................................................12

9. Maintenance and storage ......................................................................................14

10. Troubleshooting ..................................................................................................... 16

Important

For your own safety, please read the instructions in this manual and the operator’s manual for the engine fully before assem-

bling and operating. Failure to follow instructions can result in serious personal injuries. Spend a few moments to familiarize

yourself with your mower before each use.

1. Intended use

This lawn mower has been designed for cutting grass on

lawn areas and intended for private use i.e. for use in home

and gardening environments. The lawnmower is to be used

only for its prescribed purpose. Any other use is deemed to

be a case of misuse which may cause damage and injuries.

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WARNING: The side discharge deflector MUST be

manually installed before first starting and any subsequent

operation of this lawnmower.

!

3. Features and controls

1. Upper handle 2. Engine stop control lever

3. Lower handle 4. Handle knob 5. Rope guide

6. Wheel 7. Cutting height adjustment lever



11. Spark plug boot 12. Oil cap

13. Fuel cap 14. Starter rope handle

Model Name MP450D20 MP625MD21H MP550RM21 MP675RM21H MP550RMD21 MP675RMD21H MX675RMD22H

Model Number 866079 866081 866083 866084 866085 866086 866087

Engine type B&S 450E B&S 625EX B&S 550EX B&S 675EXI B&S 550EX B&S 675EXI B&S 675EXI

Self Propelled Drive No No No No No No Yes

Engine Displacement 125cc 150cc 140cc 163cc 140cc 163cc 163cc

Nominal Power(KW) 1.66 2.31 2.04 2.49 2.04 2.49 2.49

Deck Width 510mm 530mm 530mm 530mm 530mm 530mm 560mm

Blade Width 500mm 510mm 510mm 510mm 510mm 510mm 530mm

Rated Speed 3100rpm 3100rpm 3100rpm 3100rpm 3100rpm 3100rpm 3100rpm

Fuel Tank

Capacity(Liter)

0.76 0.76 0.76 1.03 0.76 1.03 1.03

Grass catcher

capacity(Liter)

N/A N/A 60 60 60 60 60

Net Weight(kg) 19 29 27 31 28 32 35

Height adjustment

range(cm)

25-66 25-76 25-76 25-76 25-76 25-76 30-85

Rear Bagging No No Yes Yes Yes Yes Yes

Side Discharging No No Yes Yes Yes Yes Yes

Mulching No Yes Yes Yes Yes Yes Yes

Oil capacity(ml) 473 473 473 473 473 473 473

Vibration on Upper

Handle(m/s2)

4.83 2.47 3.89 3.26 3.16 5.3 3.26

2. Technical specifications

Figure 1. Model: MP450D20

1

2

3

5

4

6

7

12

10

8

9

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14

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Fig 2. Model: MP625MD21H

1

2

5

4

6

7

12

8

10

1. Upper handle 2. Engine stop control lever

3. Starter rope handle 4. Rope guide

5. Handle knob 6. Lower handle

7. Cutting height adjustment lever

8. Wheel 9. Engine



12. Deck 13. Spark plug boot 14. Fuel cap

15. Oil cap

11

3

14

13

15

9

Fig 3. Model: MP550RM21

1. Upper handle 2. Engine stop control lever

3. Lower handle 4. Handle Knob

5. Rope guide 6. Grass bag

7. Rear door 8. Wheel

9. Cutting height adjustment lever 10. Deck

11. Spark plug boot 12. Engine 13. Oil cap

14. Fuel cap 15. Starter rope handle

Including A: Mulch plug

A

1

12

11

13

2

3

4

5

6

8

9

7

10

15

14

Fig 4. Model: MP675RM21H

1. Upper handle 2. Engine stop control lever

3. Lower handle 4. Handle Knob

5. Rope guide 6. Grass bag 7. Rear door

8. Cutting height adjustment lever 9.Wheel

10. Engine 11. Deck 12. Spark plug boot

13. Oil cap 14. Fuel cap

15. Starter rope handle

Including A: Mulch plug

3

12

14

1

2

4

5

6

8

9

11

7

13

15

10

A

Fig 5. Model: MP550RMD21

1. Upper handle 2. Engine stop control lever

3. Lower handle 4. Handle Knob

5. Starter rope handle 6. Rope guide

7. Grass bag 8. Rear door 9. Deck

10. Wheel 11. Cutting height adjustment lever



14. Spark plug boot 15. Engine

16. Fuel cap 17. Oil cap

Including A: Mulch plug

3

14

17

1

2

4

5

6

7

8

9

11

12

13

10

15

16

A

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1

2

3

5

4

6

9

14

13

12

17

16

15

8

7

11

10

1. Upper handle 2. Engine stop control lever

3. Lower handle 4. Handle Knob

5. Rope guide 6. Grass bag

7. Rear door 8. Cutting height adjustment lever

9. Wheel 10. Deck

11. Side discharge cover



14. Engine 15. Oil cap 16. Fuel cap

17. Starter rope handle

Including A: Mulch plug

Figure 6. Model: MP675RMD21H

A

1

2

4

6

5

7

9

15

14

11

18

17

1. Upper handle 2. Self-propelled drive lever

3. Engine stop control lever 4. Lower handle

5. Handle Knob 6. Grass bag 7. Rope guide

8. Rear door 9. Wheel

10. Cutting height adjustment lever 11. Deck



14. Spark plug boot 15. Engine 16. Oil cap

17. Starter rope handle 18. Fuel cap

Including A: Mulch plug

Figure 7. Model: MX675RMD22H

8

12

13

16

3

10

A

4. Symbols and warnings

Symbols are used in this manual to attract your attention to

possible risks. The safety symbols and the explications which

accompany them must be perfectly understood. The warning

themselves do not avoid the risks and cannot be a substitute

for proper methods of avoiding accidents.

The safety alert symbol is used to identify safety infor-

mation about hazards that can result in personal injury.

A1 Read operator’s manual before attempting to

operate the mower.

A2 To avoid injury or death, keep hands and feet

away from the mower deck at all times during

operation.

A3 To avoid injury to others, do not mow when

Others, especially children, are around.

A4

Disconnect spark plug boot before performing repair.

B1 To avoid injury from thrown objects, do not operate

the mower unless all mulching, discharge, or bagging

components are in their proper place.

C1 Release the lever to stop engine.

C2 Engage the lever for self-propelled drive.

D1 Release the lever to stop engine.

!

A1 A2 A3 A4

B1

C1 C2

D1

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E1

F1 F2 F3

F1



Fire or explosion can cause severe burns or death.

F2 WARNING! The lawnmower exhaust gas contains toxic

substances. Do not run the engine in closed or poorly venti-

lated areas.

F3 Running engines produce heat. Engine parts, especially



occur on contact.

!

WARNING! Keep the safety signs clear and visible on

the equipment. Replace the safety signs if they are

missing or illegible.

5.

Instructions for safe operation

5.1 Training

1. Read the instructions carefully. Be thoroughly familiar with

the controls and the proper use of the walk-behind mower

before starting.

2. Never allow children or people unfamiliar with these instruc-

tions to use the lawnmower. Local regulations can restrict the

age of the operator.

3.Keep in mind that the operator or user is responsible for ac-

cidents or hazards occurring to other people or their property.

4.The operators must receive proper training in the use, ad-

justment and operation of the machine, including prohibited

operations.

5.2 Preparation

1. Always wear substantial and slip-resistant footwear and

long trousers when operating the lawnmower. Do not operate

the equipment when barefoot or wearing open sandals.

2. Always wear safety goggles or safety glasses with side

shields when operating the lawnmower to protect your eyes

from foreign objects which can be thrown from the lawmower.

3. Only operate the lawnmower when there is a good visibility,



4. Where feasible, avoid mowing in wet grass. Reduced fooing

could cause slipping.

5. Do not mow in inclement weather such as rain, strong

winds, or thunderstorms.

6. WARNING! Do not use the lawnmower when there is a risk

of lightning.

7. Never operate the lawnmower while people - especially

children - or pets are nearby.

8. Thoroughly inspect the area where the equipment is to be

used and remove all foreign objects such as stones, toys,

sticks, wires, etc. which can be thrown by the lawnmower.



alcohol, drugs or other medication which can cause drowsi-



10. Before using, always do visual inspection of the lawnmow-

er to ensure that all components are present, undamaged and



- Check the condition of the blade, blade bolt and cutter

assembly. Replace worn or damaged blades and bolts as

complete sets to preserve balance.



11. CAUTION! Never operate the lawnmower with defective

guards. Never operate the lawnmower without safety devices

such as the entire rear door, the entire side discharge cover,



in place:



installed prior to use.

12. The lawnmower safety systems or features shall not be

tampered with or disabled.

-

per with the engine speed.

14.WARNING! 

and explosive. Fire or explosion can cause severe burns or

death:



- Never remove the cap of the fuel tank or add fuel while the

engine is running or when the engine is hot.

- Fill or drain fuel only in a well-ventilated area.





stored.



- If fuel is spilled, do not attempt to start the engine but move

the machine away from the area of spillage and avoid creating

any source of ignition until petrol vapors have dissipated.

- Replace all fuel tank and container caps securely.

15.WARNING! Avoid skin to have repeated or prolonged

contact gasoline and avoid inhalation of gasoline vapor.

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5.3 General Safe Operation

1. Do not run the engine in closed or poorly ventilated areas

where dangerous carbon monoxide fumes can gather.

2. Do not tilt the lawnmower when starting the engine, except

if the lawnmower has to be tilted for starting. In this case, do

not tilt it more than absolutely necessary and lift only the part

which is away from the operator.

3. Start the engine carefully according to instructions and with

feet well away from the blade.

4. Do not start the engine when standing in front of the

discharge chute.

5. Once the engine is started, it is recommended to make

sure engine control lever and braking system (operator

presence control) are properly functioning before

commencing to mow.

6. While operating the lawnmower only walk, never run.

7. Take extra care when using the lawnmower on slopes

(see section 5.4 Slope Operation

ditches or embankments.

8. Never reverse or pull the lawnmower towards you when

engine is running.

9.

Stop the blade if the lawnmower has to be tilted when

crossing surfaces other than grass and when transporting the

lawnmower to and from the area to be mowed;



11. Do not put hands or feet near or under rotating parts.

Keep clear of the discharge openings at all times.

12. Never pick up or carry a lawnmower while the engine is

running.

13. Stop the engine, disconnect the spark plug boot and make

sure that all moving parts have come to a complete stop:

- Before clearing blockages or unclogging a chute;

- Before checking, cleaning or working on the lawnmower.

- After striking a foreign object. Inspect the lawnmower for

damage and make repairs before restarting and operating the

lawnmower.

- If the lawnmower starts to vibrate abnormally (check

immediately – abnormal vibration is generally a warning of

trouble).

- Before leaving the lawnmower unattended.

- Before refueling the lawnmower.

- Before cleaning, repairing or inspecting the lawnmower.

14. Prolonged exposure to noise and vibration from petrol

engine powered equipment should be avoided – to minimize

the risks from noise and vibration it is recommended to take

intermittent breaks and limit the duration of operation; wear

ear protection from engine noise as well as heavy work gloves

to reduce vibration in the hands.

5.4 Safe Slope Operation

Slopes are a major factor related to slip and fall accidents which

can result in severe injury. All slopes require extra caution. If you

feel uneasy on a slope, do not mow it.

1. Do mow across the face of slopes; never up and down.

2. Do remove objects such as rocks, tree limbs, etc. before

starting to mow.

3. Do watch for holes, ruts, or bumps. Tall grass can hide

obstacles.

4.



operator could lose footing or balance.

5.

Do not mow excessively steep slopes (maximum 10 degrees)

or areas where the ground is very rough , exercise extreme caution

when changing direction on slopes.

6. Do not mow on wet grass. Reduced footing could cause

slipping.

7. Do not leave the mower on slope without the operator

present (even with the engine stopped).

5.5 Transportation

1. Empty the fuel tank, ideally let the engine run until all petrol

is used up (do not leave the lawnmower unaccompanied with

the engine running). If the fuel tank has to be drained, this

should be done outdoors.

2. Remove the spark plug boot from the spark plug.

3. Drain the engine oil from the engine.



housing.

5. When transporting the lawnmower by truck or similar

device, ensure that the mower is securely fastened to be free

of movement of any part of the lawnmower.

6. For shipping the product, use the original packaging

whenever possible.

6. Assembly

6.1 Assembling the Handle

6.1.1 How to Assemble the Lower Handle.

Assembly of the lower handle by is described in the following



Models

Reference

Image

How to assembly the

lower handle

MP450D20 Fig.8

Fasten lower handle on

the deck by arc plate,

screws and bolts (which

are fixed on deck).

MP625MD21H Fig.9

Fasten lower handle on

handle brackets by bolts

and knobs.

MP550RM21/

MP675RM21H /

MP550RMD21/

MP675RMD21H/

MX675RMD22H

Fig.10

Not for

Reproduction

9

Fig. 8 Fig. 9

Fig. 10

6.1.2 How to Assemble the Upper Handle.

Assembly of the upper handle on to the lower handle is de-



!

NOTE! Make sure the starter rope guide is on the right

handle, when you stand behind the lawnmower.

Models

Reference

Image

How to assembly the

lower handle

MP450D20 Fig.11

Install the upper handle

and fix it to lower handle

by using the star knobs

and the square neck bolts

on each side.

MP625MD21H Fig.12

MP550RM21/

MP675RM21H /

MP550RMD21/

MP675RMD21H/

MX675RMD22H

Fig.13

Fig.11 Fig.12 Fig.13

6.1.3 How to Fix the Cables to the Handles

Fix the cables on the handles with the cable clips provided

(see Fig.14):

• Push models: One cable only;

• Self-propelled models: Two cables.

6.2 Attaching the Grass Bag

• Applicable to models with Grass Bag only (see Section



1. Lift rear door with one hand and position the hooks of the

grass bag onto the two plastic sleeves which are installed on

rear door shaft(see Fig.15 and Fig.16).

2. Release rear door to secure the grass bag in position (see

Fig.17).

6.3 Installing Mulch Plug

• Only applicable to models with both rear collect and

-

tions).

1.

Lift the rear door and remove the grass bag, if present.

2. Push the plastic mulch plug into the discharge chute until it

is locked in place (see Fig.18 and Fig.19).

3. Release the rear door to cover the mulch plug (see Fig.20).

Fig. 14

Fig. 15 Fig.16

Fig. 17

Not for

Reproduction

10



• Only applicable to models with Side Discharge function

(see Section 2. Technical specifications).

Please follow the following table to install the side



Fig. 18 Fig.19

Fig. 20

Models

Reference

Image

How to install the side

discharge deflector

MP450D20 Fig.21

Fix side discharge deflec-

tor on deck by using two

sets of the bolt and screw.

MP625MD21H Fig.22

No tools required;

1. Lift the side discharge

cover with one hand and

put hook features of side

discharge deflector on

shaft of side discharge

cover.

MP550RMD21 /

MP675RMD21H /

MX675RMD22H

Fig.23

MP625MD21H Fig.24

2. Release side discharge

cover to secure side

discharge deflector in

position.

MP550RMD21 /

MP675RMD21H /

MX675RMD22H

Fig.25

MP550RMD21 /

MP675RMD21H /

MX675RMD22H

!

NOTE! To operate rear collect

capable models in side dis-

charge mode (where applicable), the

mulch plug must be installed as

described above and shown in Fig.18,

Fig.19 and Fig.20.

Fig. 21 Fig.22

Fig. 23 Fig.24

Fig. 25

6.5 Engine Oil and Fuel

6.5.1 How to Check and Fill Oil

!

CAUTION!

To prevent damage on engine, the engine is



the oil which complies with the section Oil Recommendations

in operator’s manual of the engine. To extend the life of your



hours of use.

!

WARNING! Before checking the engine oil level or

adding oil, stop engine and place the mower on a level

surface.

!

NOTE! It is essential to comply with the section How To

Check/Add Oil in the operator’s manual for the engine

to check and add oil correctly.

!

NOTE! Running the engine with a low oil level will

cause engine damage. Using non-detergent oil can

shorten the engine’s service life and using 2-stroke oil will

damage the engine.

www.murray.com

Not for

Reproduction

11

6.5.2 How to Add Fuel to the Engine

!

NOTE! To prevent engine damage, engine is shipped



fuel that complies with the section Fuel Recommendations in

operator’s manual for the engine.

!

WARNING! -

mable and explosive. Fire or explosion can cause

severe burns or death:

- Never remove the cap of the fuel tank or add fuel while the

engine is running or when the engine is hot.

- Fill fuel only in a well-ventilated area.







- If fuel is spilled, do not attempt to start the engine but move

the machine away from the area of spillage and avoid creating

any source of ignition until petrol vapors have dissipated.

- Replace all fuel tank and container caps securely.

!

WARNING! Avoid skin to have repeated or prolonged

contact gasoline and avoid inhalation of gasoline vapor.

!

NOTE! Please comply with the section How To Add

Fuel 

into your engine.

7. Adjustment

7.1 Setting the Grass Cutting Height

CAUTION! Adjust grass cutting height only when

engine is stopped and spark plug boot is disconnected

with the spark plug.

Refer to section to get cutting

height range of each model.

For model MP450D20

1. Remove the wheels from the deck to take them out of their

current cutting height position by loosening the knob on the

center of the wheel(see Fig.26 and Fig.27):

• On the right hand side (same side as the discharge



• On left hand side wheels (opposite side to the discharge



!

Fig. 26 Fig.27

2. Select a suitable one of the three locations as appropriate

for the desired cutting height:

• The highest hole on the deck will give the highest height

of cut while the lowest hole on the deck will give the high-

est height of cut.

!

NOTE! All four wheels must be set at same level’s

cutting height holes.

3. Securely re-attach the wheels in the selected height of

cut location by pushing the wheel bolt into the hole and

tightening(see Fig.28):

• On the right hand side (same side as the discharge



•

On left hand side wheels (opposite side to the discharge



For all other models

The cutting height is centrally adjusted with the cutting height

adjustment lever:

1. Pull the cutting height adjustment lever away from the deck

until clear of the slot to release it from its current position (see

Fig.29).

2. Move the handle forwards or backwards relative to the

mower and align with slot for the desired cutting height posi-

tion (see Fig.30):

• The slot towards the front of the machine is the lowest

height of.

• The slot towards the front of the machine is the highest

height of cut.

Fig. 28

Fig. 29 Fig.30

Not for

Reproduction

12

7.2 Setting Required Mode

-







NOTE! 

components given in the following table for safe opera-

tion in the appropriate mode.

Components required for safe operating con-

figuration in desired function

Mode

Side discharge

deflecto

Grass bag

Mulch plug

Rear

bagging

× 

×

Mulching × ×



Side

discharging

 ×





!

Each time the lawnmower is used, check the operation of the

engine control lever and braking system before starting to mow;

-

gine should stop within 3 seconds.

2. If the engine fails to stop within 3 seconds of release of

the lever, do no use the machine. Take the lawnmower to an

authorized Briggs & Stratton service dealer to have it checked

and adjusted / repaired.

WARNING! The blade continues to rotate for a few sec-

onds after the engine control lever is released.

8.1.1 How to Start the Engine

For starting from cold on models MP450D20:

1. Press the primer bulb for fully 3-5 times.

WARNING! Too many presses of the primer bulb may



10 Troubleshooting.

For all other models or for starting from warm on models

MP450D20 Go directly to step 2.

2. Stand behind the mower. Hold the engine control lever

against the upper handle (see Fig.31 or Fig.32 as appropriate

for the shape of the upper handle on your model).

3. With the right hand, grip the starter cord handle and pull

it gently out about 10-15cm until resistance is felt. Pull the

starter cord quickly to start the engine (see the Fig.33 or

Fig.34 as appropriate for the shape of the upper handle on

your model.)

NOTE!

If the engine fails to start after three pulls, then

repeat the above steps 1 or 2 (as appropriate) to 3.

4. Once the engine is running, gently release the rope handle

back to rest in the starter rope guide.

!

8. Operation

8.1 Starting and Stopping the Lawnmower

WARNING! The lawnmower’s exhaust gas contains

toxic substances. Do not run the engine in closed or

poorly ventilated areas.

WARNING! The lawnmower blade begins to rotate as

soon as the engine is started.

WARNING! Before starting engine, check the lawn-

mower blade to make sure that it is securely fastened.

WARNING! Keep hands, feet, hair and clothing away

from all the moving parts of the lawnmower.

NOTE! To start the engine, make sure that the spark plug





WARNING! Running engines produce heat. Engine



Severe thermal burns can occur on contact.

WARNING! The blade continues to rotate for a few sec-

onds after the engine control lever is released.

NOTE! In order to avoid any unintentional start-ups, this



• Running the engine to power the cutting blade requires

the engine control lever to be held against the upper

handle (without an operator present, the machine will not

run).

• To stop the engine (and blade), release the engine con-

trol lever. The lever will return to its original position which



Each time the lawnmower is used, check the operation of the

engine control lever and braking system before starting to

mow;

!

Fig. 31 Fig.32

Fig. 33 Fig.34

!

www.murray.com

Not for

Reproduction

13

8.1.2 How to Stop the Engine

-

nism is used each time the operator wishes to stop the blades



• To stop the engine (and blade), release the engine con-

trol lever. The lever will return to its original position which



8.2 Mowing Grass

WARNING! Always follow the strictest safety proce-

dures when using the lawnmower. Carefully read the

safety instructions of this manual before using the lawnmower.

!

WARNING! Before you start to mow, check the engine

start/stop lever several times to be sure that it is

working properly. Ensure that the tension cable can be

smoothly operated (i.e. is not catching or kinking in any way).

!

WARNING! Never open the rear door, side discharge

cover when the engine is running. Serious injury can be



8.2.1 How to Mow Grass-General Advice

1.

For best results, mow grass when it is dry. Wet grass will tend

to clog the blade and the grass collection system.



season or in drought condition.

3. When using the lawnmower in mulching mode, ensure that



wet or long grass. For cutting wet or long grass, regularly stop

the mower to clear the blade and deck with a suitable tool (do

not clear by hand).

4. Plan the area to be cut.

5. Take account of the terrain and / or obstacles.

6. F



adjacent lines. Based on this, select an appropriate position to

start from and position the mower appropriately.

7. Select the required operating mode (rear bagging, side

discharge or mulching options as appropriate for your model



lawnmower for this by following the section 7.2 Setting the

Required Mode.

8.2.2 How to Mow Grass – Lawnmower Operation

1. Once the mower is in position to start mowing, follow the

section 8.1.1How to Start the Engine above to start the en-

gine and run the cutting system.



lever engaged.

3. Commence mowing by moving the lawnmower forwards at

a steady walking pace:

For push models;

• Push the mower forward through the grass to be mown.

For self-propelled models;

• Follow the section 8.2.3 How to Use the Self-Propelled

Function.

8.2.3 How to Empty Grass Bag

• Applicable to models with Grass Bag only (see Section 2.)

As soon as grass debris start to trail the lawn mower, it is time

to empty grass bag.

NOTE!

engine control lever to stop the engine and wait until the

blade has come to a completely stopped rotating.

1. Use one hand to lift up rear door and use the other hand to

grip the grass bag carry handle (see Fig.35).

2. When clear of the lawnmower, release the rear door,

allowing it to automatically spring back and cover the rear

discharging chute.

3. Empty the grass cuttings from the grass bag.

4. Re-attach the grass bag as described in the section 6.2

Attaching the Grass Bag.

NOTE! To ensure that grass cuttings can be collected

into the grass bag, the rear discharge chute and inside

of the mower deck need to be kept clear of any blockage,

such as a build up of grass debris. Do not use hands or feet to

remove grass debris from any area of the mower. If a blockage

is observed, use a suitable tool such as a brush to clear it.

8.2.4 How to Use the Self-Propelled Function (model

MX675RMD22H only)

Once the mower is positioned ready to mow and the engine

is running (keep the engine control lever engaged against the

upper handle), gently push the drive lever forward against the

upper handle (see Fig.36).

The lawnmower will automatically move forward while the

self-propelled drive lever is engaged in this position.

To stop the forward drive of the lawnmower, release the drive

lever.

NOTE! Only use the self-propelled function while mow-

ing in straight lines; always stop the self-propelled drive

and revert to push control while making turns.

!

Fig. 35 Fig.36

!

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14

9. Maintenance and storge

To maintain the lawnmower’s ability to operate safe and



for maintenance and storage.

WARNING! Before performing any maintenance or

cleaning, stop engine and wait until mower blade come to

a stop totally. Remove the spark plug boot from the spark plug.

9.1 Normal Maintenance Notes

1. Keep all nuts, bolts and screws tight to be sure that the

equipment is in safe working condition.

2. Check the grass catcher frequently for wear or

deterioration.

3. Replace worn or damaged parts for safety.





safety components can damage the lawnmower and injure

the operators seriously.

5. Only use blades and other spare parts recommended by

Briggs & Stratton. The use of non-genuine parts can damage

the machine and injure the operators. Keep the lawnmower in

good working condition.

9.2 Tilting the Lawnmower

For any cleaning or maintenance that involves the underside

of the deck, follow this procedure to tilt the mower to access

this area of the lawnmower:

1. Empty the fuel tank; ideally let the engine run until all the

fuel is used up:

•

Never leave the lawnmower unattended while running.

• Only run in a well-ventilated area.

• If the fuel tank has to be drained, this should be done

outdoors.

2. Tilt the lawnmower sideways:



• Do not tilt by more than 90 degrees.

9.3 Cleaning

The lawnmower should be cleaned thoroughly after every use.

Always clean the lawnmower immediately after use;

• Do not allow grass debris and other debris to become

dry and hard on any of the mower surfaces.

• Dried grass debris and dirt may impair the mowing

operation.



damage to the lawnmower.

9.3.1 How to Clean

For side discharge and collecting models

Clean all grass debris from any discharge chutes (side and /

or rear discharge chute).

For all models

Follow the procedure above in section 9.2 Tilting the

Lawnmower.

Thoroughly clean the underside of the deck.

!

9.4 Engine cleaning & Maintenance

NOTE! Refer to the Operators Manual of the engine for

all engine maintenance.

NOTE! Check and/or replace the engine brake pads in

service agent regularly, only original parts can be used

as replacement.

9.5 Blade Maintenance

WARNING! Before performing any maintenance or

cleaning, stop engine and wait until mower blade come to

a stop totally. Remove the spark plug boot from the spark plug.

• To inspect the blade assembly, follow the procedure

above in section 9.2 Tilting the Lawnmower.

• Frequently check the blade (B in Fig.37) for wear or

damage including cracking, bending, deformation etc.

Ensure that the blade cutting edge is sharp (a blunt blade

will roughly tear grass, turning the tips of grass brown).

• Frequently check the bolt (D in Fig.37) that holds the

blade in position; Ensure that the bolt is tightly fastened.

• If the blade hits an object, stop the engine immediately,

disconnect spark plug boot from spark plug. Check the

whole blade assembly which includes the bolt (D in

Fig.37), washer(C in Fig.37), blade (B in Fig.37) and blade

adapter (A in Fig.37).

• If any parts of the blade assembly are found to be

damaged, they should be replaced immediately. Do not

operate the lawnmower with any damaged parts.

• As a minimum, the blade assembly should be replaced

every two years.

• When replacing any component of the blade assembly,

all other components of the blade assembly should be

replaced at the same time.

!

NOTE! The blade assembly must only be removed and

serviced by a Briggs & Stratton authorized service

agent.

NOTE! Use only Briggs & Stratton genuine replacement

or recommended parts. Any other parts may not be

suitable and could endanger safety.

• When installing the blade assembly, the torque on the

blade bolt should be between 45Nm and 55Nm.

!

Fig. 37

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15

ITEM

SERVICE

PERFORMED

EACH USE 5 Hours 25 Hours 50 Hours 100 Hours

Engine Oil

Check Oil Level X

Initial Oil Change X

Periodic Oil change X*

Air Cleaner Clean or Replace X**

Spark Plug Replace X

Blade, blade adapter, blade

washer, blade bolt

Check For

Wear, Damage&

Replacement

X

Mower Deck

Clean Debris

Accumulation

X

9.6 Wheel Maintenance

At least once per season, lubricate the ball bearings in each

wheel with light oil.

9.7 Storage

9.7.1 Storage for Short Periods

The lawnmower can be stored for short periods of time (less

than 15 days) without performing any storage maintenance.

However before placing the lawnmower into storage area,

always carry out the following steps:





2. Allow the engine to fully cool.

3. Where applicable, ensure the grass bag is empty.

4. Fully clean the lawnmower, including the engine.



mower upright.

6. Store in a safe place which is not accessible by children or

people who are not familiar with operation.

7. The storage area must be well ventilated with no risk of



electric spark.

8. It is recommended to use a fuel stabilizer additive to protect

the fuel tank and engine, particularly when using fuel with

ethanol content (max E10).



petrol storage area free of grass, leaves, or excessive grease.

9.7.2 Store the Lawnmower for Extended Period

!

WARNING! Fuel and its vapors are extremely



severe burns or death:

- Never remove the cap of the fuel tank or add fuel while the

engine is running or when the engine is hot.

- Fill or drain fuel only in a well-ventilated area.





1. Empty the fuel tank; ideally let the engine run until all the

fuel is used up;

•

Never leave the lawnmower unattended while running.

• Only run in a well-ventilated area.

• If the fuel tank has to be drained, this should be done

outdoors.

2. At the end of every season, replace the engine oil with

fresh oil (not applicable on Briggs & Stratton EXi model

engines – for these engines, just Check & Add to ensure that

the engine oil is kept topped up. To replace the oil, follow the

directions in the Operators Manual of the engine.

3. Fully clean the lawnmower, including the engine, paying



cylinder.

4.Wipe clean the deck to protect the paintwork.



mower upright.

6.Store in a safe place which is not accessible by children or

people who are not familiar with operation.

7.The storage area must be well ventilated.



petrol storage area free of grass, leaves, or excessive grease.

9.8 Maintenance Schedule

Performing routine maintenance correctly on your lawnmower

will ensure of safe and reliable use. Follow the below

maintenance schedule:

*Change oil every 25 hours when operating under heavy load or high temperature.

**Clean more often under dusty conditions or when air debris is present.

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16

10. Troubleshooting

!

WARNING! Before performing any maintenance or

cleaning, stop engine and wait until mower blade come

to a stop totally. Remove the spark plug boot from the spark

plug.

!

CAUTION! Improper repairs can result in the unsafe

functioning of the lawnmower which can result in

personal injury to the operator, other people or property

damage:



following table should be referred to a Briggs & Stratton

authorized service agent.

• Improper repairs may invalidate the warranty and

additional costs may also be incurred.

• For issues corrective actions listed here that refer to part

of the engine, refer to the operator’s manual of the engine

for further information.

!

NOTE! Use only Briggs & Stratton genuine

replacement or recommended parts. Any other parts

may not be suitable and could endanger safety.

!

NOTE! For removing or installing spark plug, avoid use

of adjustable spanner which can damage spark plug.

Use a dedicated spark plug wrench of the correct size.

!

NOTE! Take care when reinstalling air cleaner

assembly as incorrectly installed air cleaner will allow

dirt into the engine, leading to potential permanent damage.

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17

PROBLEM PROBABLE CAUSE CORRECTIVE ACTION

Engine does not

start.

Throttle lever not in the correct position for

the prevailing conditions.

Go to dealer authorized by Briggs&Stratton to move throttle

lever to correct position

Engine stop control lever not engaged Pull engine stop control lever against upper handle.

Fuel tank is empty. Fill tank with fuel-Refer to operator’s manual of the engine





manual of the engine

Spark plug loose. Tighten spark plug-Refer to operator’s manual of the engine

Spark plug boot loose or disconnected

from spark plug.

Install spark plug boot on spark plug.

Gap between electrodes of spark plug is

incorrect.

Refer to engine operator’s manual to set correct gap

Spark plug is defective

Install new genuine Briggs&Stratton spark plug --Refer to

operator’s manual of the engine



Remove spark plug boot from spark plug, remove spark

plug, clean fuel on spark plug, and pull starter rope 5 times

to make fuel in combustion chamber cleared, then install

spark plug and spark plug boot.



Go to dealer authorized by Briggs&Stratton to clean the carbure-

tor or replace one new genuine carburetor

Ignition module fails to provide electric

Contact a Briggs & Stratton authorized service agent.



to start or loses

power.

Dirt, water, or stale fuel tank.

Drain fuel and clean tank. Fill tank with clean, fresh fuel

Vent hole in fuel tank cap is plugged. Clean or replace fuel tank cap.

 

Engine operates

erratically.

Spark plug is defective.

Install new genuine Briggs&Stratton spark plug --Refer to

operator’s manual of the engine

Gap between electrodes of spark plug is

incorrect.

Refer to engine operator’s manual to set correct gap

Air cleaner element is dirty.

Clean air cleaner element or replace air cleaner element-

Refer to engine operator’s manual

Engine idles poorly.

Air cleaner element is dirty.

Clean air cleaner element or replace air cleaner element-

Refer to engine operator’s manual

Air slots in engine shroud are blocked. Remove debris from slots.

-

gine blower housing are blocked.



Engine skips at

high speed.

Gap between electrodes of spark plug is

too close.

Set gap between electrodes- Refer to engine operator’s

manual

Engine overheats



Remove any debris from slots in shroud, blower housing, air

passages.

Incorrect spark plug.

Obtain correct replacement for original spark plug from by

Briggs & Stratton authorized agent.

Mower vibrates

abnormally

Cutting assembly is loose.

Go to dealer authorized by Briggs&Stratton to tighten blade

with torque between 45N.m-55N.m

Cutting assembly is unbalanced

Go to dealer authorized by Briggs&Stratton to replace with

new same blade.

Not for

Reproduction

18 www.murray.com

WARRANTY

BRIGGS & STRATTON POWER PRODUCTS GROUP, L.L.C. OWNER WARRANTY POLICY

LIMITED WARRANTY

Briggs & Stratton Power Products Group, LLC will repair or replace, free of charge, any part (s) of the equipment that

is defective in material or workmanship or both. This warranty is effective for the time periods and subject to the condi-

tions stated below. For warranty service, find the nearest Authorized Service Dealer using our dealer locator at www.

BriggsandStratton.com or www.Murray.com.

There is no other express warranty. Implied warranties, including those of merchantability and fitness for a particular pur-

pose, are limited to one year from purchase or to the extent permitted by law. Liability for incidental or consequential dam-

ages are excluded to the extent exclusion is permitted by law.

Some states or countries do not allow limitations on how long an implied warranty lasts, and some states or countries do

not allow the exclusion or limitation of incidental or consequential damages, so the above limitation and exclusion may not

apply to you. This warranty gives you specific legal rights and you may also have other rights which vary from state to state

or country to country.

Most warranty repairs are handled routinely, but sometimes requests for warranty service may not be appropriate. This war-

ranty only covers defects in materials or workmanship. It does not cover damage caused by improper use or abuse, improper

maintenance or repair, normal wear and tear, or stale or unapproved fuel.

Improper Use and Abuse - The proper, intended use of this product is described in the Operator’s Manual. Using the prod-

uct in a way not described in the Operator’s Manual or using the product after it has been damaged will void your warranty.

Warranty is not allowed if the serial number on the product has been removed or the product has been altered or modified in

any way, or if the product has evidence of abuse such as impact damage, or water/chemical corrosion damage.

Improper Maintenance or Repair - This product must be maintained according to the procedures and schedules provided

in the Operator’s Manual, and serviced or repaired using genuine Briggs & Stratton parts. Damage caused by lack of mainte-

nance or use of non-original parts is not covered by warranty.

Normal Wear - Like all mechanical devices, your unit is subject to wear even when properly maintained. This warranty does

not cover repairs when normal use has exhausted the life of a part or the equipment. Maintenance and wear items such as

filters, belts, cutting blades, and brake pads (engine brake pads are covered) are not covered by warranty due to wear charac-

teristics alone, unless the cause is due to defects in material or workmanship.

Stale Fuel - In order to function correctly, this product requires fresh fuel that conforms to the criteria specified in the

Operator’s Manual. Damage caused by stale fuel (carburetor leaks, clogged fuel tubes, sticking valves, etc) is not covered by

warranty.

ABOUT YOUR WARRANTY

WARRANTY PERIOD

The warranty period begins on the date of purchase by the first retail consumer or commercial end user, and continues for the



-

enced commercial use, it shall thereafter be considered as commercial use for purposes of this warranty.

NO WARRANTY REGISTRATION IS NECESSARY TO OBTAIN WARRANTY ON BRIGGS & STRATTON PRODUCTS.

SAVE YOUR PROOF OF PURCHASE RECEIPT. IF YOU DO NOT PROVIDE PROOF OF THE INITIAL PURCHASE DATE AT

THE TIME WARRANTY SERVICE IS REQUESTED, THE MANUFACTURING DATE OF THE PRODUCT WILL BE USED TO

DETERMINE THE WARRANTY PERIOD.





Not for

Reproduction

19

Declaration of Conformity

Corporation

Briggs & Stratton Power Products Group, LLC.

Milwaukee, WI, USA.

The following machine complies with the relevant ISO safety and health requirements as globally recognized for combustion

engine powered lawnmowers.

In case of alteration of the machine, not agreed upon by us, this declaration will lose its validity

Machine Description: Lawn Mower

Machine Type :

MP450D20, MP625MD21H, MP550RM21, MP675RM21H,

MP550RMD21,

MP675RMD21H, MX675RMD22H

Applicable EC Directives EC Machinery Directive:2006/42/EC

Applicable Harmonized Standards

EN ISO 5395-1

EN ISO 5395-2

Certification agency

TUV SUD China

NO.151 Heng Tong Road, Shanghai 200070, P.R. China

Laboratory Qualification ISO17025 certified lab

Not for

Reproduction

Gracias por la compra de este cortacésped Murray™ fabricado conforme a estándares de calidad. Nos complace que haya

depositado su confianza en la marca Murray. Si se utiliza y mantiene de acuerdo con las instrucciones de este manual, el pro-

ducto le proporcionará muchos años de funcionamiento confiable.

Este manual contiene información de seguridad para que tome conciencia de los peligros y riesgos asociados con los

motores, y cómo evitarlos. Esta máquina está diseñada y su uso previsto es solo la finalización del corte de céspedes esta-

blecidos y no cualquier otro propósito. Es importante que lea y comprenda totalmente estas instrucciones antes de tratar de

arrancar u operar este equipo. Guarde estas instrucciones originales para

consulta futura.

Fecha de compra___________________________________________________________________________

Vendedor minorista___________________________________________________________________________________

Número de teléfono del vendedor minoris-

ta_____________________________________________________________________

Equipo

Número de modelo_______________________________________________________________________

Número de serie_______________________________________________________________________

Motor

Modelo________________________Tipo_______________________Código______________________

MURRAY es una marca comercial de

Briggs & Stratton Power Products Group, LLC.

2 www.murray.com

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