Mantis 8122 Owner's manual

Brand: Mantis

Model: 8122

Category: Snow throwers

Type: Owner's manual

OPERATOR / PARTS MANUAL

12 Amp 20” Electric Snow Thrower

8122

2 12 Amp 20” Electric Snow Thrower Operator’s Manual

 















IMPORTANT MESSAGE

Thank you for purchasing this Mantis product. You have purchased a world class product, one of the best designed and built anywhere.

This machine comes with an Operator / Parts Manual. The useful life and good service you receive from this machine depends to a

large extent on how well you read and understand this manual. Treat your machine properly, lubricate and adjust it as instructed, and

it will give you many years of reliable service.

Your safe use of this Mantis product is one of our prime design objectives. Many safety features are built in, but we also rely on your

good sense and care to achieve accident-free operation. For best protection, study the manuals thoroughly. Learn the proper operation

of all controls. Observe all safety precautions. Follow all instructions and warnings completely. Do not remove or defeat any safety

features. Make sure those who operate this machine are as well informed and careful in its use as you are.

Mantis designs and builds its equipment to serve many years in a safe and productive manner. For longest life, use this machine only

as directed in the manuals, keep it in good repair and follow safety warnings and instructions. You’ll always be glad you did.











SAFETY RULES & WARNINGS ...................................................................................................................4-6

ASSEMBLY .................................................................................................................................................7-10

ELECTRICAL ................................................................................................................................................ 11

OPERATION .............................................................................................................................................12-13

MAINTENANCE ........................................................................................................................................14-15

STORAGE ......................................................................................................................................................16

PARTS SECTION ......................................................................................................................................17-18

TROUBLESHOOTING ...................................................................................................................................19

LIMITED WARRANTY .................................................................................................................................... 20

This Operator / Parts Manual is part of the machine. Suppliers of both new and

second-hand machines must make sure that this manual is provided with the

machine.

TABLE OF CONTENTS

WARNING

You will notice throughout this Owners Manual Safety Rules and Important Notes. Make sure you understand and obey these

warnings for your own protection.

I. SPECIAL SAFETY INFORMATION





An important part of the safety system incorporated in this snow thrower are the warning and information decals found on

various parts of the snow thrower. These decals must be replaced in time due to abrasion, etc. It is your responsibility to

replace these decals when they become hard to read.

IV. SAFETY RULES

This machine is NOT intended for use by persons

(including children) with reduced physical, sensory or

mental capabilities, or lack of experience and knowledge,

unless they have been given supervision or instruction

concerning use of the machine by a person responsible for

their safety.

Children should be supervised to ensure that they do not play

with the machine.



1. Read the operating and service instruction manual

carefully. Be thoroughly familiar with the controls and

the proper use of the equipment. Know to stop the unit

and disengage the controls quickly.

2. Never allow children to operate the equipment. Never

allow adults to operate the equipment without proper

instruction.

3. Keep the area of operation clear of all persons,

particularly small children, and pets.

4. Exercise caution to avoid slipping or falling, especially

during operation.

PREPARATION

1. Thoroughly inspect the area where the equipment is to

be used and remove all doormats, sleds, boards, wires,

and other foreign objects.

2. Do not operate the equipment without wearing

adequate winter garments. Wear footwear, which will

improve footing on slippery surfaces.

OPERATION

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

Keep clear of the discharge opening at all times.

2. Exercise extreme caution when operating on or

crossing gravel drives, walks, or roads. Stay alert for

hidden hazards or trafc.

3. After striking a foreign object, stop the motor,

disconnect the power supply, thoroughly inspect the

snow thrower for any damage, and repair the damage

before restarting and operating the snow thrower.

4. If the unit should start to vibrate abnormally, stop

the motor, disconnect the power supply and check

immediately for the cause. Vibration is generally a

warning of trouble.

5. Stop the motor and disconnect the power supply,

before unclogging the collector/impeller housing

or discharge guide, and when making any repairs,

adjustments, or inspections.

6. When cleaning, repairing, or inspecting, make certain

the collector/impeller and all moving parts have

stopped.

7. Do not clear snow across the face of slopes. Exercise

extreme caution when changing direction on slopes.

Do not attempt to clear steep slopes.

Safety Rules & Warnings

 









to wear proper protection can result in serious















8. Never operate the snow thrower without proper guards,

plates or other safety protective devices in place.

9. Never operate the snow thrower near glass enclosures,

automobiles, window wells, etc. without proper

adjustment of the snow discharge angle. Keep children

and pets away.

10. Do not overload the machine capacity by attempting to

clear snow at too fast a rate.

11. Never direct discharge at bystanders or allow anyone

in front of the unit.

12. Disconnect the power supply when the snow thrower is

transported or not in use.

13. Use only attachments and accessories approved by

the manufacturer of the snow thrower.

14. Never operate the snow thrower without good visibility

or light. Always be sure of your footing, and keep a rm

hold on the handles. Walk; never run.



1. Check the unit at frequent intervals to be sure the

equipment is in safe working condition.

2. Always refer to owner’s guide instructions for important

details if the snow thrower is to be stored for an

extended period.

3. Maintain or replace safety and instructions labels, as

necessary.

4. Run the machine a few minutes after throwing snow to

prevent freeze-up of the collector/impeller.

5. General maintenance written instructions shall

be provided with the equipment for maintenance

operations recommended by the manufacturer to

maintain the equipment in safe operating condition.

SERVICE

Servicing requires extreme care and knowledge and should

be performed only by a qualied service technician. For

service please contact Mantis. A Mantis representative

can direct you to an AUTHORIZED SERVICE CENTER for

repair or provide the appropriate direction to best address

your servicing issue. When servicing, use only identical

replacement parts.

If the supply cord is damaged, it must replaced by the

manufacturer, its service agent or similarly qualied

persons in order to avoid a hazard.

WARNING

 

Precautions that involve

your safety.

Read Operator/

Parts Manual before

using snow shovel, or

performing any repair

or maintenance. Keep

owner’s manual in a

safe place.

Wear eye protection

when operating this

machine.

Pay attention that

bystanders are not

injured through foreign

objects thrown from

the snow shovel.

Keep hands away

from the collector/

impeller.

Keep all bystanders

(especially children and

pets) at least 100 ft.

away from the work area.

Do not operate on

inclines greater than

15°.

Danger - Keep

feet away from the

collector/impeller.

Keep hands and feet

away from rotating

parts.

Do not expose

to rain or use in

damp locations.

The power supply

must be disconnected

before carrying

out cleaning or

maintenance. Shut

off the motor before

unclogging the

discharge shute.



1. Upper handle

2. Middle handle

3. Lower handle

4. Wheel

5. Cover screws

6. Belt cover

This product requires assembly.

• Carefully remove the product and any accessories from

the box. Make sure that all items listed in the packing list

are included.

• Inspect the product carefully to make sure no breakage or

damage occurred during shipping.

• Do not discard the packing material until you have

carefully inspected and satisfactorily operated the product.

• If any parts are damaged or missing, please contact

Mantis for assistance.



• Snow thrower

• Discharge directional control

Assembly

Safety Rules & Warnings

 







completely.





















serious personal injury.























































WARNING WARNING

WARNING

7. Scraper

8. Impeller

9. Discharge chute

10. Chute deector

11. Discharge directional control

12. Switch box

• Chute deector

• Owner's Manual

 





• Position the chute deector (1) over the discharge chute

(2), and align the mounting holes.

• Insert a rubber washer (5) between the chute deector (1)

and the discharge chute, maintaining the alignment of the

holes (3).

• Attach the chute deector to the discharge chute using a

carriage bolt (4), 2 washers (5), and a locknut (6).

• Insert a rubber washer (8) between the chute deector (1)

and the discharge chute, maintaining the alignment of the

holes (10).

 

• Remove any packing material that may have been

inserted between the upper and lower handles for

shipping purposes.

• Align the holes on the upper handle with the holes on the

middle handle. Insert the bolts, and use the wing nuts to

tighten them.

• Align the holes on the middle handle and the lower

handle. Insert the bolts, and tighten them using the wing

nuts provided.

 

• Attach the outlet end of an extension cord to the plug on

the rear of the snow thrower.

• Make a loop in the extension cord. From the right side,

pass the loop through the hole in the back of cord retainer

and place it around the hook.

Assembly

8 12 Amp 20” Electric Snow Thrower Operator’s Manual

















WARNING

Bolt

























 

• Attach the chute deector to the discharge chute using

2 carriage bolts (7), 4 washers (8), 4 external teeth

serrated lock washers (11) and 2 locknuts (9).

10 12 Amp 20” Electric Snow Thrower Operator’s Manual

Electrical

Assembly



This snow thrower is “DOUBLE INSULATED”

• Ground Fault Circuit Interrupter (GFCI) protection should

be provided on the circuit(s) or outlet(s) that will be used

for this snow thrower. For an extra measure of safety, use

a receptacle that has built-in GFCI protection.

• The nameplate on the snow thrower indicates the voltage

used. Do not connect the snow thrower to an AC circuit

that provides a different voltage from the voltage that is

indicated on the nameplate.





























• Inspect the extension cord and the power cord on a

regular basis. Look for deterioration, cuts, or cracks in the

insulation. Inspect the connections for damage. Repair

or replace the extension cord or the power cord if any

damage is found.

• Verify that the rotor and all moving parts have come to

a complete stop, and disconnect the snow thrower from

the power supply in order to prevent accidental start-ups

before cleaning or performing any inspections or repairs.

• Do not abuse the extension cord. Do not carry the snow

thrower by the power cord or pull on the cord in order to

disconnect it from the receptacle.

• Keep the extension cord away from heat, oil, and sharp

edges in order to prevent damage.

• If the extension cord is damaged in any manner while it is

plugged in, disconnect it from the outlet immediately.

• Prevent any possible disconnection of the power cord

from the extension cord while the snow thrower is in use

by using the cord retainer and guide bar. Refer to the

section entitled Using the Cord Retainer.

• Avoid accidental start-ups. Do not carry the snow thrower

with a nger on the switch while it is plugged in. Verify

that the switch is in the "OFF" position before plugging in

the snow thrower.

• Unplug the snow thrower and allow it to cool down before

putting it into storage. Store the snow thrower indoors.

• Unplug the snow thrower when it is not in use and before

performing any maintenance or repairs.



(WHEN USING 120 V ONLY)

  

      

0 6 18 16 16 14

6 10 18 16 14 12

10 12 16 16 14 12

12 16 14 12 Not Recommended

WARNING







• Align the holes (1) on the directional chute arm (2) with

the holes on the lower directional chute arm (3). Insert the

hitch pin (4).





 

• Attach the directional chute arm (5) to the center handle (6)

using a washer (7) and a locknut (8).

















 



• Rotate the lever release counterclockwise and hold to

allow access to the switch control lever.

• Pull the switch control lever toward the snow thrower

handle and let go of the lever release. Continue to hold

the switch control lever against the snow thrower handle

in order to keep it running.

• To stop the snow thrower, release the switch control lever.



Snow can be discharged to the left, straight ahead, or to the

right of the operator.

Follow these instructions in order to change the direction:

• Release the safety switch in order to stop the rotor.

• Turn the discharge directional control clockwise 360°. The

vanes will turn approximately 80° to the right.

• Turn the discharge directional control counter-clockwise

360°. The vanes will turn approximately 80° to the left.

Operation

12 12 Amp 20” Electric Snow Thrower Operator’s Manual





































cause serious personal injury.



























       



WARNING

CAUTION

WARNING



• Keep children and pets away from the operating area.

• Keep area cleared free of stones, toys, or other foreign

objects that the rotor blades can throw. Such items may

be covered by a snowfall and go unnoticed. If the snow

thrower strikes an obstruction or a foreign object during

operation, stop the snow thrower, unplug the extension

cord, remove the obstruction, and inspect the snow

thrower for damage.

• Rotate the chute crank clockwise in order to move the

discharge chute to the left, or rotate it counter-clockwise

in order to move the chute to the right.

• Do not force the chute deector too far forward so that a

gap appears between the discharge chute and the chute

deector.

• Do not overtighten the locknuts that hold the chute

deector in position to the point where it is necessary to

use excessive force in order to adjust the chute deector.

• Begin removing snow near the electrical outlet, and work

outward. Work back and forth, and not away from or

toward the outlet.

• When turning at the end of a swath, step over the cord,

and then turn the snow thrower.

• Overlap each swath, and discharge the snow in the

direction of the wind whenever possible.

• Shave down large banks of snow by placing the snow

thrower on the bank. Allow the weight of the snow thrower

to shave down the bank in a back-and-forth motion.

• Keep the extension cord clear of obstructions, sharp

objects, and all moving parts. Do not pull sharply on the

cord or abuse it in any manner. Inspect the extension

cord for damage that may result in an electric shock on a

regular basis. If the extension cord becomes damaged in

any way, replace it immediately.

• Some controls and moving parts may freeze in certain cold

and snowy weather conditions. If any of the controls become

hard to operate, stop the motor, disconnect the extension

cord, and inspect the snow thrower for frozen parts.

• Do not use excessive force when trying to operate frozen

controls. Free all of the controls and moving parts before

using the snow thrower.

• When operating the snow thrower, keep the wheels 1"

(2.5 cm) off the pavement by tipping the Snow Thrower

forward. This will help to prevent the snow from building

up on the wheels.

• After clearing the snow, allow the motor run for a few

minutes so that the ice doesn’t freeze any moving parts.

Then shut off the motor, wait for all moving parts to come

to a complete stop, and wipe the ice and snow off the

snow thrower. Rotate the chute crank several times in

order to remove the snow from the snow thrower.

• Lock the snow thrower when it is not in use. Disconnect

the extension cord.



Switch



Switch







 



The scraper is located at the bottom of the rotor housing.

• Remove the 5 screws that secure the scraper to the snow

thrower.

• Install the new scraper, and attach it securely using the 5

screws.



• Remove the 4 screws that secure the left side plate to the

frame of the snow thrower (Fig. 9). Remove the side plate.

• Pull the bearing away from the small pulley. Remove

the belt from the large pulley and the small pulley that is

located inside the housing (Fig. 9).

• Position the new belt over the small pulley (Fig. 10).

• Rotate the rotor with the left hand while positioning the

belt on the large pulley with the right hand (Fig. 10).

• Install the left side cover, and secure it using the 4 screws.



• Remove the 4 screws that secure the right side cover to

the frame of the Snow Thrower (Fig. 11).

• Remove the short shaft (Fig. 12).

• Push the sides of the housing out, as illustrated in Figure

13 and remove the rotor (Fig. 14).

• Install the new rotor, and reinstall the clip.

• Reinstall the right side cover, and secure it using the 4

screws.

Maintenance

 















Screw



Screw









Small

pulley

BeltScrew





Small

pulley

Belt



 

Parts section

Storage

 

• Run the snow thrower for a few minutes in order to melt

any snow that may be left on the snow thrower.

• Disconnect the extension cord from the snow thrower.

• Inspect the extension cord thoroughly for signs of wear or

damage. Replace it if it is worn or damaged.

• Inspect the snow thrower thoroughly for worn, loose, or

damaged parts.

• Store the extension cord with the snow thrower.

• Store the snow thrower in a clean, dry place. Cover it in

order to provide added protection.

 

Troubleshooting

Parts section

18 12 Amp 20” Electric Snow Thrower Operator’s Manual

PROBLEM POSSIBLE CAUSE SOLUTION

Then handle is not in The carriage bolts are not properly Adjust the height of the handle, and verify that the

position. seated. carriage bolts are properly seated.

Tighten the knobs.

The snow thrower does The power cord is disconnected from Reconnect the cord, and use the cord restraint to

not start. the switch. keep the cord close to the switch.

The switch is defective. Replace the switch.

The extension cord is not connected to Connect the plug on the snow thrower to the

the plug. extension cord.

The extension cord is not connected to Plug the extension cord into a live 120 V AC, 60 Hz

the power source. outlet.

The motor is on, but the The belt is damaged. Replace the belt (see the section entitled

rotor does not turn. Inspecting/Replacing the Drive Belt).

The Snow Thrower The scraper is worn. Replace the scraper (see the section

leaves a thin layer of entitled Replacing the Scraper).

snow behind.

   

1 33306100 Left side board

2 3290198 Belt

3 34901100 Synchronous belt

4 33212100 Tensioner x shaft

5 32104100 Tensioner bearing

6 33211100 Tensioner shaft

7 33903100 Tensioner spring

8 34165100 Motor vent cover

9 32201100 Locknut

10 33305100 Tensioner bracket

11 3290699 Washer

12 32203100 Cross screw

13 33301100-2 Motor support

14 31120100-1 Motor assembly

15 3220505 Screw

16 34120100-1 Waterproof bracket

17 33378100 Motor clamp

18 32208100 Cross screw

19 32210100 Washer

20 322011213 Nylock nut M3.5

21 3410835-59 Knob

22 32215100 Washer

23 34111100-1 Chute deector

24 32216100 Hex screw

25 34110100-2 Discharge chute

26 32207100 Cross screw

27 34104100-2 Out chute cover

28 34121100A Waterproof support

29 34106100-1 Inlet chute cover

30 33307100 Right side board

31 34102100-9 Rear cover

32 34160100 Pinion bracket

33 34161100 Plate

34 34162100 Square bushing

35 33260100 Pin

36 32288100 Screw

37 32901261 Locknut

38 31107100-1 Pigtail cable

39 311021212 Switch assembly

40 33207100-13 Middle handle

41 3290299 Washer

42 3330499 Screw

QTY

   

43 3420199 Rubber

44 3410499A-9 Handle

45 33306699 Washer

46 32901251 Retaining ring

47 33208628-9 Upper handle

48 3490137-1 Soft grip sponge

49 3290599 Nut

50 33214100-3 Rear rocker

51 3320643 Hitch pin

52 33214100-2 Upper rocker

53 3220436 Bolt

54 3410835-4 Knob

55 3290135 Split pin

56 3411799C-12 Wheel cover

57 3220898 Washer

58 3411799-22 6” Wheel (right)

59 33206100-13 Lower handle

60 34250100 Rubber sleeve

61 3411799-12 6” Wheel (left)

62 33304100 Front support

63 33201100A Short shaft

64 32206100 Cross screw

65 32102100 Waterproof bearing

66 33309100 Right support

67 34158100 Inner cord clamp

68 34105100-1 Vane

69 31118100 Impellor assembly

70 34101100-9 Front cover

71 33308100 Left support

72 3220651 Nut

73 32217100 Washer

74 33203100A Pulley wheel support shaft

75 31110100A Pulley wheel assembly

76 34109100-1 Driver wheel

77 33273100 Left barrier chip

78 33274100 Right barrier chip

 

LIMITED WARRANTY

MANTIS extends this limited warranty against defects in material and workmanship for a period

of two (2) years under normal usage for residential purposes from the date of purchase by the

original purchaser.

MANTIS will repair or replace, at its discretion, any part or parts of the product found to

be defective in material or workmanship during the warranty period. Warranty repairs and

replacements will be made without charge for parts or labor. All parts replaced under warranty

will be considered as part of the original product, and any warranty on the replaced parts will

expire coincident with the original product warranty. If you think your MANTIS ELECTRIC SNOW

THROWER is defective in material or workmanship contact Mantis and you will be instructed to

send it, along with your proof of purchase (sales receipt) to:

Mantis

1028 Street Road

Southampton, PA 18966

You are responsible for pickup and delivery charges; the product must be returned to us postage

paid.

MANTIS assumes no responsibility in the event that the product was not assembled or used in

compliance with any assembly, care, safety, or operating instructions contained in the Owner’s

Manual or accompanying the product. This limited warranty does not cover damages or defects

due to normal wear and tear, lack of reasonable and proper maintenance, failure to follow

operating instructions or owner’s manual, misuse, lack of proper storage or accidents [or routine

maintenance parts and service]. This limited warranty shall not be effective if your Mantis electric

snow thrower has been subjected to negligence or has been repaired or altered by anyone other

than Mantis or Mantis authorized dealer or authorized service center.

You must maintain your MANTIS ELECTRIC SNOW THROWER by following the maintenance

proce-dures described in the owner’s manual. Such routine maintenance, whether performed by

you or a dealer, is at your expense.

MANTIS MAKES NO EXPRESS OR IMPLIED WARRANTIES, REPRESENTATIONS OR

PROMISES EXCEPT THOSE CONTAINED HEREIN. THERE ARE NO OTHER WARRANTIES,

INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE. ALL WARRANTIES OTHER THAN THE EXPRESS WARRANTY SET FORTH

ABOVE ARE SPECIFICALLY DISCLAIMED. THE DURATION OF ANY IMPLIED WARRANTY,

INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, IS

LIMITED TO THE DURATION OF THIS WRITTEN LIMITED WARRANTY. MANTIS DISCLAIMS

ALL LIABILITY FOR INDIRECT, INCIDENTAL AND/OR CONSEQUENTIAL DAMAGES

IN CONNECTION WITH THE USE OF THE MANTIS PRODUCTS COVERED BY THIS

WARRANTY. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED

WARRANTY LASTS AND/OR DO NOT ALLOW THE EXCLUSION OR LIMITATION OF

INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THAT ABOVE LIMITATIONS AND

EXCLUSIONS MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL

RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATES TO

STATE.

MANTIS

1028 Street Road

Southampton, PA 18966

800-366-6268

Mantis 8122 Owner's manual

Brand: Mantis

Model: 8122

Category: Snow throwers

Type: Owner's manual

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Mantis 8122 Owner's manual

Mantis 8122 Owner's manual

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