Kubota RCK72P-F39 User manual

OPERATOR'S MANUAL

READ AND SAVE THIS MANUAL

MODELS

ENGLISH

RCK72P-F39

RCK60P-F39

1BDACAEAP0810

ENGLISH

Abbreviations Definitions

ABBREVIATION LIST

DT

fpm

G

Hi-Lo

HST

LH

m/s

PTO

RH

ROPS

rpm

r/s

SAE

2WD

4WD

Dual Traction [4WD]

Feet per minute

Gear Transmission

High speed-Low speed

Hydrostatic Transmission

Left Hand (Standing in the direction of travel)

Meters per second

Power Take Off

Right Hand (Standing in the direction of travel)

Roll-Over Protective Structure

Revolutions per minute

Revolutions per second

Society of Automotive Engineers

2 Wheel Drive

4 Wheel Drive

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FOREWORD

3

SAFETY FIRST

IMPORTANT :

NOTE :

3

DANGER :

3

WARNING :

3

CAUTION :

Indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury.

Indicates that equipment or property damage could result if

instructions are not followed.

Gives helpful information.

You are now the proud owner of a KUBOTA ROTARY MOWER. This machine is a

product of KUBOTA's quality engineering and manufacturing. It is made of excellent

materials and under a rigid quality control system. It will give you long, satisfactory

service. To obtain the best use of your rotary mower, please read this manual

carefully. It will help you become familiar with the operation of the machine and

contains many helpful hints about rotary mower maintenance. It is KUBOTA's policy

to utilize, as quickly as possible, every advance in our research. The immediate use

of new techniques in the manufacturing of products may cause some small parts of

this manual to become outdated. KUBOTA distributors and dealers will have the

most up-to-date information. Please do not hesitate to consult them.

This symbol, the industry's ''Safety Alert Symbol'', is used throughout this manual

and on labels on the machine itself to warn of the possibility of personal injury.

Read these instructions carefully. It is essential that you read the instructions and

safety regulations before you attempt to assemble or use this unit.

CONTENTS

ENGLISH

SAFE OPERATION ............................................................................................ -1

IMPORTANT................................................................................................................ 1

SERVICE ..................................................................................................................... 3

INTRODUCTION ......................................................................................................... 4

SPECIFICATIONS ................................................................................................... 4

MOWER TERMINOLOGY ....................................................................................... 5

SETTING UP ............................................................................................................... 6

PRE-ASSEMBLY ..................................................................................................... 6

SETTING UP THE MOWER .................................................................................... 6

MOWER MOUNTING .................................................................................................. 8

MOUNTING THE MOWER ...................................................................................... 8

DISMOUNTING THE MOWER DECK ..................................................................... 9

OPERATING THE MOWER ...................................................................................... 10

MAKING THE MOST OF YOUR MOWER............................................................. 10

CUTTING HEIGHT................................................................................................. 10

OPERATING MOWER........................................................................................... 12

MAINTENANCE......................................................................................................... 13

MAINTENANCE CHECK LIST............................................................................... 13

CHECK AND MAINTENANCE............................................................................... 14

Gear box oil ....................................................................................................................14

Lubricating All Grease Fittings........................................................................................14

MOWER TILP UP .................................................................................................. 15

How to Tilt Up .................................................................................................................15

How to Mount the Mower................................................................................................ 17

BLADE REPLACEMENT ....................................................................................... 18

How to Check and Remove Blades................................................................................ 18

How to Sharpen Blades..................................................................................................19

BELT REPLACEMENT .......................................................................................... 19

FRONT GAUGE WHEEL [TIRES] ......................................................................... 20

ADJUSTING THE LIFT RODS............................................................................... 20

ADJUSTING LIFT SPRINGS (LH & RH)................................................................ 21

TIGHTENING TORQUE CHART ........................................................................... 22

TROUBLESHOOTING............................................................................................... 23

INDEX........................................................................................................................ 24

-1SAFE OPERATION

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SAFE OPERATION

Careful operation is your best insurance against an

accident. Read this section carefully before operating the

mower. All operators, no matter how much experience

they may have had, should read this manual, the machine

manual and other related manuals before operating

mower. It is the owner's obligation to instruct all operators

in safe operation.

B Before operation (Pre-operation)

A Operator

1. Do not operate the machine while under the influence

of alcohol, medication, other substances or while

fatigued.

2. Be thoroughly familiar with the controls and learn how

to stop quickly in an emergency. Know your equipment

and its limitations.

3. Do not wear loose, torn, or bulky clothing around

machine. The clothing may catch on moving parts or

controls, leading to the risk of accident.

Wear and use any additional safety items such as hard

hat, safety boots or shoes, eye and hearing protection,

gloves, etc., as appropriate or required.

4. Never allow children to operate the mower, even

under adult supervision.

5. Read and understand this manual and the machine

operator's manual before operating the mower. Allow

only a properly trained person to operate the machine.

A Machine, blades and equipment

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

mower is in safe working condition.

2. KUBOTA recommends the use of ROPS and seat belt

in almost all applications.

Always use the seat belt when the machine is

equipped with a ROPS.

Never use the seat belt when the machine is not

equipped with a ROPS.

3. Replace damaged or illegible safety decals.

See the following pages for required labels.

4. Do not operate the mower without all shields, guards

and ROPS in place.

A Working area

1. Thoroughly inspect the area where the mower is to be

used.

Remove all stones, sticks, wires, bones and other

objects that could be thrown at high speed.

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

particularly small children, and pets.

All people and pets should be kept at a safe distance

from the work area.

B Operation

A Starting

1. Never start the engine or operate levers from

anywhere other than in the seated position.

2. Before starting the engine, disengage the FRONT

PTO and shift the machine transmission into neutral.

A Operation

1. Keep bystanders at a safe distance from the machine

during mowing operations.

2. Do not stand on the mower.

3. While making turns in rough terrain, reduce machine

speed.

4. Upon striking a foreign object, stop and inspect the

machine and the mower for damage. Repair the

damage before resuming operation.

5. If the mower discharge deflector becomes clogged,

stop the machine; disengage the mower drive; shut off

the engine; set the parking brake and remove the key,

and clean out the deflector before continuing. (For side

discharge mower)

6. Slopes are a major factor related to loss-of-control and

tipover accidents, which can result in severe injury or

death.

All slopes require extra caution. If you cannot back up

the slope or if you feel uneasy on it, do not mow it.

7. When mowing in rough terrain or in high grass, set the

mower at the highest cutting level to reduce the

possibility of the mower striking debris or hidden

objects.

8. Know what is behind you before backing up. Look to

the rear before and while backing up. Do not mow

while in reverse unless absolutely necessary and

make sure the area immediately behind you is clear of

obstructions or holes and small children. Use extra

caution when the machine is equipped with the grass

catcher. Your view to the rear is restricted.

(1) ROPS

(2) Seat belt

SAFE OPERATION-2

ENGLISH

B Maintenance and Storage

Never attempt to make adjustments or repairs of any kind

while the machine and mower are running. Shut off the

engine, remove the key, set the parking brake and allow

the blades to stop.

-3SAFE OPERATION

ENGLISH

MOWER SAFETY LABELS

SAFE OPERATION-4

ENGLISH

CARE OF DANGER, WARNING AND CAUTION LABELS

1. Keep danger, warning and caution labels clean and free from obstructing material.

2. Clean danger, warning and caution labels with soap and water, dry with a soft cloth.

3. Replace damaged or missing danger, warning and caution labels with new labels from your local KUBOTA dealer.

4. If a component with danger, warning or caution label (s) affixed is replaced with a new part, make sure new label (s) is

(are) attached in the same location (s) as the replaced component.

5. Mount new danger, warning and caution labels by applying on a clean dry surface and pressing any bubbles to outside

edge.

1IMPORTANT

ENGLISH

IMPORTANT

To obtain maximum productivity from your mower, the

following procedures should be observed.

To avoid serious injury:

A Before servicing the machine, park the

machine on a firm, level surface, set the

parking brake, stop the engine and remove the

key.

1. Adjust the anti-scalp rollers and wheels according to

the mowing height. Refer to the label below.

This label is also affixed to the mower deck.

[4WD]

[2WD]

2. Grease the following parts. (See "MAINTENANCE

CHECK LIST" in "MAINTENANCE" section.)

A Universal joint

A Front gauge wheel brackets and front gauge

wheels

A Three spindle shafts

A Belt tension pivot and tension pulley

A Front roller

3. Remove the belt shield from the mower deck and

clean out debris daily.

4. When replacing the blades, follow the instructions as

shown below. (See "BLADE REPLACEMENT" in

"MAINTENANCE" section.)

(1) Front gauge wheel

(2) Lift rod

(3) Front roller

(4) Anti-scalp roller

(1) Front gauge wheel

(2) Lift rod

(3) Front roller

(4) Anti-scalp roller

IMPORTANT2

ENGLISH

(1) Spindle holder

(2) Blade

(3) 2-Cup washers

(4) Spline boss

(5) Bolt

(6) Spindle guard

(1) Block (A) "Loosen" (counterclockwise)

3SERVICE

ENGLISH

SERVICE

1. When in need of parts or service, give the serial

number of the mower to the dealer.

2. The serial number is located on the right side of the

deck.

3. For your reference, please record the serial number in

the space provided.

KUBOTA MOWER

MODEL

SERIAL NUMBER

DATE OF PURCHASE

NAME OF DEALER

(1) Serial number

4 INTRODUCTION

ENGLISH

INTRODUCTION

SPECIFICATIONS

Model RCK72P-F39 RCK60P-F39

Suitable front mower F3990, F3690, F2890, F2690, F2690E

Mounting method 2 point linkage

Adjustment of cutting height Gauge wheel

Cutting width mm (in.) 1829 (72) 1524 (60)

Cutting height mm (in.) 25 to 129 (1.0 to 5.0)

Discharge direction Side

Weight (Approx.) kg (lbs.) 225 (496) 186 (410)

Blade spindle speed r/s (rpm) 45.6 (2735) 54.5 (3272)

Blade tip velocity m/s (fpm) 89.5 (17620) 89.6 (17640)

Blade length mm (in.) 625 (24.6) 523 (20.6)

Number of blades 3

Dimensions

Total length mm (in.) 1216 (47.9) 1078 (42.4)

Total width mm (in.) 2222 (87.5) 1907 (75.1)

Total height mm (in.) 461 (18.1)

5INTRODUCTION

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MOWER TERMINOLOGY

[RCK72P-F39]

[RCK60P-F39]

(1) Shield

(2) Gauge wheel arm right

(3) Gauge wheel arm left

(4) Discharge deflector

(5) Deck

(6) Gear box

(7) Front gauge wheel

(8) Universal joint

(9) Front roller

(10) Anti-scalp roller

(11) Center frame

(12) Blade

6 SETTING UP

ENGLISH

SETTING UP

Some of the mower parts were packed separately.

Read the following procedure to properly assemble

the mower.

PRE-ASSEMBLY

Take out all mower components from the case and check

the parts as shown in the figure.

[RCK72P-F39]

[RCK60P-F39]

SETTING UP THE MOWER

1. Attach the front gauge wheels to the arms of the deck

with the clevis pins and snap rings.

A There is a directional punch mark on the top of the

front wheel shaft.

This punch mark must be facing in the direction of

forward travel to function properly. Failure to do so

may result in premature wear or improper function of

the gauge wheels.

A Check the tire inflation pressure. See the "FRONT

GAUGE WHEEL [TIRES]" section in this manual for

the recommended tire pressure.

(1) Clevis pin ø9x53, snap ring (ø45)

(2) Front gauge wheel

(3) Punch mark

(4) Front wheel shaft

(5) Gauge wheel arm

(A) "Forward"

7SETTING UP

ENGLISH

2. Install the discharge pin with the spring pushed

against the mower deck, then install the split pin as

shown in the figure.

The spring should provide resistance to the discharge

deflector.

[RCK72P-F39]

3. Install the gas spring to the mower deck with the clevis

pin, the plain washer and the split pin.

(1) Deck

(2) Spring

(3) Discharge pin

(4) Split pin

(5) Discharge deflector

(A) "Front"

(1) Gas spring

(2) Clevis pin, plain washer, split pin

8MOWER MOUNTING

ENGLISH

MOWER MOUNTING

MOUNTING THE MOWER

To avoid personal injury:

A Before mounting the mower deck, read and

understand the use of the lift link lowering

speed control knob.

(See "Lift Link Lowering Speed Control Knob"

in "OPERATING THE MACHINE" section in the

operator's manual of the machine.)

A Place the PTO lever in the "DISENGAGE"

position.

A Place the High-Low gear shift lever in the

"NEUTRAL" position.

A The mower links (left hand, right hand) are

spring-loaded. Have an assistant hold the arm

in position when mounting the mower deck.

1. Move the mower deck under the mower links and

place the hydraulic lift lever in the "DOWN" position.

2. Attach the front end of the mower links to the mower

deck with clevis pins and set pins.

3. Start the engine, raise the mower deck, lock the lift link

lowering speed control knob, make sure the PTO is

"OFF" and shut off the engine.

4. Install the lift rods to the mower deck with the lock pins

and lower the mower deck on the ground.

[RCK72P-F39]

5. Attach the gas spring to the mower link with the clevis

pin and the rue ring cotter.

A When operating the mower, make sure the tilt lever is

unlocked.

A For tilting up the mower, see "MOWER TILT UP"

section in the operator's manual of the mower.

6. Pull back the coupler of the universal joint.

Push the universal joint onto the PTO shaft until the

coupler locks.

Slide the universal joint backward and forward to

check that the universal joint is locked securely.

A Finally pull the universal joint to see if it is locked tight

in position.

After mounting the mower deck, adjust the lift link lowering

speed.

(1) Mower link

(2) Clevis pin

(3) Set pin

(1) Lift rod

(2) Lock pin

(3) Mower link

(4) Gas spring

(5) Tilt lever ("UNLOCKED" position)

(6) Rue ring cotter

(1) Coupler

(2) Universal joint

9MOWER MOUNTING

ENGLISH

DISMOUNTING THE MOWER DECK

For dismounting the mower deck, reverse the above

procedures.

To avoid personal injury:

A The mower links (left hand, right hand) are

spring-loaded. Have an assistant hold the arm

in position when mounting the mower deck.

10 OPERATING THE MOWER

ENGLISH

OPERATING THE MOWER

MAKING THE MOST OF YOUR MOWER

1. When using your mower for the first time, choose a

smooth level area and cut in straight and slightly

overlapping strips.

2. The size and type of the area to be mowed will

determine the proper mowing pattern. Take into

account obstructions, such as trees, fences and

buildings. To keep grass clippings off fences,

sidewalks, etc., it is advisable to go over the outside of

the area to be mowed several times in a clockwise

direction. To mow the area remaining, work in a

counterclockwise direction so the clippings are

dispersed onto the previously cut area. (For side

discharge mower)

3. Always keep the left side of the mower toward trees,

posts or other obstacles on the first trip around the

obstacle. (For side discharge mower)

4. Most lawns should be mowed to keep the grass

approximately 50 to 80mm (2 to 3 in.) high. Best

results are obtained by cutting often and not too short.

To keep a green lawn, never mow more than one third

of the height of the grass or a maximum of 25mm (1

in.) in 1 mowing.

For extremely tall grass, set the cutting height at

maximum for the first mowing, then reset to the

desired height and mow again. Allow the grass to grow

to 80mm (3 in.), then cut off only the top growth.

5. On thick or springy grass or soft ground, the mower

rollers may sink into the ground, resulting in the cut

being too low.

Adjust the cutting height to get the desired height of

cut.

6. For best appearance, grass should be cut in the

afternoon or evening when it is free of moisture.

CUTTING HEIGHT

To avoid serious injury or death:

A Never engage the PTO and blades in transport

position.

1. Check both the front gauge wheel pressures daily and

inflate as necessary to prevent uneven cutting height.

(See "FRONT GAUGE WHEEL" in "MAINTENANCE"

section.)

2. Cutting height can be adjusted from 25 to 129 mm (1.0

to 5 in.). To set the cutting height, adjust the front

gauge wheels and lift rods.

3. Adjust the anti-scalp roller as shown in the figure.

[4WD]

(1) Front gauge wheel

(2) Lift rod

(3) Front roller

(4) Anti-scalp roller

11OPERATING THE MOWER

ENGLISH

[2WD]

C For adjusting the lift rod tension

To adjust the tension, insert the set pin from A, B, C or D

as shown in the figure.

A If all the spacers are difficult to insert to the lift rod,

remove 1 or 2 spacers. Restore the removed spacer to

the right mower link with a clevis pin and a snap pin.

A For easy adjusting of the lift rods, place a wooden

block under the rear end of the mower deck before

lowering the mower deck.

A Cutting height will change because of the ground

condition.

4. Use higher settings for mowing in a rough area or

when mowing high grass. Lower settings should be

used only for smooth lawns where short grass is

desired.

5. Lower the mower deck by pushing the hydraulic

control lever forward. This lowers the mower deck

from the transport position to the operating position.

(1) Front gauge wheel

(2) Lift rod

(3) Front roller

(4) Anti-scalp roller

(1) Shim storage

(2) Shim

(3) Clevis pin

(4) Snap pin

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