Kubota ,RCK60B-23BX User manual

Abbreviations Definitions
DT Dual Traction [4WD]
G Gear Transmission
Hi-Lo High speed-Low speed
HST Hydrostatic Transmission
PTO Power Take Off
RH Right Hand (Standing in the direction of travel)
LH Left Hand (Standing in the direction of travel)
ROPS Roll-Over Protective Structure
SAE Society of Automotive Engineers, USA
2WD Two Wheel Drive
4WD Four Wheel Drive
r/s Revolutions per second
rpm Revolutions per minute
m/s Meters per second
fpm Feet per minute
ABBREVIATION LIST

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 the fine materials and under rigid quality control systems. 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 quick 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this manual to be outdated.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 mower 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.
DANGER : Indicates an imminently hazardous situation
which, if not avoided, may result in death or
serious injury.
WARNING : Indicates a potentially hazardous situation which,
if not avoided, may result in death or serious
injury.
CAUTION : Indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate
injury.
IMPORTANT : Indicates that equipment or property damage
could result if instructions are not followed.
NOTE : Gives helpful information.
FOREWORD
SAFETY FIRST

CONTENTS
ENGLISH
SAFE OPERATION ................................................................................................. 1
IMPORTANT................................................................................................................ 1
SERVICE ..................................................................................................................... 2
INTRODUCTION ......................................................................................................... 3
SPECIFICATIONS ................................................................................................... 3
MOWER TERMINOLOGY ....................................................................................... 4
SETTING UP ............................................................................................................... 7
PRE-ASSEMBLY ..................................................................................................... 7
SETTING UP THE MOWER .................................................................................... 8
MOUNTING TO THE TRACTOR............................................................................... 10
MOUNTING THE MOWER TO THE TRACTOR.................................................... 10
MOWER ADJUSTMENTS ......................................................................................... 13
ADJUSTING THE PARALLEL LINKAGE............................................................... 13
ADJUSTING THE MOWER LINKS ........................................................................ 14
ADJUSTING THE SELF-BALANCE SUSPENDED LINKAGE............................... 15
OPERATION.............................................................................................................. 16
MAKING THE MOST OF YOUR MOWER............................................................. 16
CUTTING HEIGHT................................................................................................. 16
OPERATING MOWER........................................................................................... 18
USING 3 POINT HITCH ATTACHMENT OR FRONT LOADER............................ 18
REMOVING THE MOWER DECK ......................................................................... 18
MAINTENANCE......................................................................................................... 19
MAINTENANCE CHECK LIST............................................................................... 19
CHECK AND MAINTENANCE............................................................................... 20
Gear box oil ....................................................................................................................20
Greasing (Use multipurpose EP2 grease (NLGI grade No. 2).) ..................................... 20
BLADE REPLACEMENT ....................................................................................... 22
BELT REPLACEMENT .......................................................................................... 23
TIGHTENING TORQUE CHART ........................................................................... 24
LONG-TERM STORAGE........................................................................................... 25
WINTER STORAGE .............................................................................................. 25
TROUBLESHOOTING............................................................................................... 26

1SAFE OPERATION
ENGLISH
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, tractor
manual and other related manuals before operating
mower. It is the owner's obligation to instruct all operators
in safe operation.
BBefore operation (Pre-operation)
AOperator
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 tractor
operator's manual before operating mower. Allow only
a properly trained person to operate the tractor.
AMachine, blades and equipment
1. Never operate the mower without proper guards,
shields, and the grass catcher bag or discharge
deflector in place.
2. The mower is equipped with many safety devices.
Do not alter or remove any part of safety system for
your safety.
3. Keep all nuts, bolts and screws tight to be sure the
mower is in safe working condition.
4. Check the blade bolts at frequent intervals for proper
tightness.
5. Inspect the blades for wear and damage. A dull blade
can be sharpened, but a blade that is worn out, bent,
cracked, or otherwise damaged must be replaced.
6. KUBOTA recommends the use of ROPS and seat belt
in almost all applications.
Always use seat belt when the tractor is equipped with
a ROPS.
Never use the seat belt when the tractor is not
equipped with a ROPS.
7. When using the mower, detach the backhoe
beforehand. Otherwise the machine may get damaged
during operation.
8. Replace damaged or illegible safety decals.
See next page for required labels.
AWorking 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.
BOperation
AStarting
1. Never start engine or operate levers from anywhere
other than the seat.
2. Before starting the engine, make sure that all levers
(including auxiliary control levers) are in their
"NEUTRAL" positions, that the parking brake is
engaged, and that both the PTO clutch lever and the
range gear shift lever (Hi-Lo) are disengaged.
AOperation
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 tractor
speed.
4. Do not mow while in reverse unless absolutely
necessary and then only after inspecting of the entire
area behind the mower.
Be extra careful of children.
5. Upon striking a foreign object, stop and inspect the
tractor and the mower for damage. Repair the damage
before resuming operation.
6. If the mower discharge deflector becomes clogged,
stop the tractor; disengage the mower drive; shut off
the engine and remove the key, and clean out the
deflector before continuing.
7. Hillside operation is dangerous and is not
recommended. If it is necessary to mow on a hillside,
use extreme caution. Never mow across the face of a
slope. Do not operate with the loader.
8. Do not mow on steep inclines, rough terrain or near
drop-offs.
BMaintenance and Storage
Never attempt to make adjustments or repairs of any kind
while the tractor and mower are running. Shut off the
engine, remove the key, set the parking brake and allow
the blades to stop.

SAFE OPERATION2
ENGLISH

3SAFE OPERATION
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 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 items should be read and observed.
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.
2. Before attaching the mower links, adjust their lengths
according to the table below.
(See "MOUNTING THE MOWER TO THE TRACTOR"
in "MOUNTING TO THE TRACTOR" section.)
3. Grease the following parts.
(See "CHECK AND MAINTENANCE" in
"MAINTENANCE" section.)
AUniversal joint
AThree spindle shafts
ABelt tension pulley
ABelt tension pivot
ABalance shaft (For RCK60B-23BX only)
4. When necessary, remove the blades as shown.
(See "BLADE REPLACEMENT" in "MAINTENANCE"
section.)
5. Operating with a loader
When operating the loader in rough terrain, remove
the mower to avoid interference between obstacles
and mower and consequent damage of mower.
Length of front link (D)
RCK60B-23BX
47 mm
RCK54-23BX
RCK48-23BX
RCK48R-23BX
(1) Block (A) "LOOSEN" (counterclockwise)
(1) Front loader

2SERVICE
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
[RCK60B-23BX, RCK54-23BX, RCK48-23BX]
[RCK48R-23BX]
(1) Serial number
(1) Serial number

3INTRODUCTION
ENGLISH
INTRODUCTION
SPECIFICATIONS
Model RCK60B-23BX RCK54-23BX RCK48-23BX RCK48R-23BX
Suitable tractor BX2350D
Mounting method
Quick-Joint, Parallel linkage
Self-balance
suspended linkage Suspended linkage
Adjustment of cutting height Dial gauge
Cutting width mm 1524 1372 1224
Cutting height mm 25 to 102
Weight (Approx.) kg 115 95 75 80
Blade spindle speed r/s (rpm) 44.1 (2647) 49.5 (2969) 54.7 (3281)
Blade tip velocity m/s (fpm) 72.5 (14271) 73.8 (14527) 72.8 (14331)
Blade length mm 523 475 424
Number of blades 3
Dimensions
Overall length mm 1000 928 895 865
Overall width mm 1930 1780 1544 1286
Overall height [Min.] mm 281 281 268 295

4 INTRODUCTION
ENGLISH
MOWER TERMINOLOGY
[RCK60B-23BX, RCK54-23BX]
(1) Gear box
(2) Front anti-scalp roller
(3) Belt cover
(4) Deck
(5) Universal joint
(6) Discharge deflector
(7) Blade
(8) Center anti-scalp roller
(9) Rear anti-scalp roller
(10) Self-balancer (RCK60B-23BX only)

5INTRODUCTION
ENGLISH
[RCK48-23BX]
(1) Gear box
(2) Front anti-scalp roller
(3) Belt cover
(4) Deck
(5) Universal joint
(6) Discharge deflector
(7) Blade
(8) Center anti-scalp roller
(9) Rear anti-scalp roller

6 INTRODUCTION
ENGLISH
[RCK48R-23BX]
(1) Gear box
(2) Front anti-scalp roller
(3) Belt cover
(4) Deck
(5) Universal joint
(6) Blade
(7) Center anti-scalp roller
(8) Rear anti-scalp roller

7SETTING 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 illustrated below. (Some of these parts may
already be assembled to the mower deck.)
[RCK60B-23BX, RCK54-23BX]
[RCK48-23BX]
[RCK48R-23BX]

SETTING UP8
ENGLISH
SETTING UP THE MOWER
[RCK60B-23BX, RCK54-23BX]
1. Place the mower on blocks as illustrated.
Turn the anti-scalp rollers sideways and attach to the
arms of the deck at the upper position with clevis pins
and snap rings.
Remove the blocks.
[RCK48-23BX]
1. Attach the front anti-scalp rollers to the deck with clevis
pins and snap rings
2. Attach the discharge deflector to the deck with the
spring, discharge pin and cotter pin.
Secure the spring to the discharge deflector as
illustrated.
[RCK48R-23BX]
1. Attach the front anti-scalp rollers to the deck with clevis
pins and snap rings
(1) Anti-scalp roller
(2) Blocks
(3) Clevis pin
(4) Snap ring
(1) Anti-scalp roller
(2) Clevis pin (ø9.5 x 25.4)
(3) Snap ring (ø45)
(1) Deck
(2) Spring
(3) Discharge pin
(4) Cotter pin
(5) Discharge deflector
(1) Front anti-scalp roller
(2) Clevis pin (ø9.5 x 25.4)
(3) Snap ring (ø45)

9SETTING UP
ENGLISH
2. Attach the rear anti-scalp rollers to the deck with M10
bolts.
3. Attach the skid to the deck with M10 bolts.
(1) Rear anti-scalp roller
(2) M10 bolt
(1) Skid
(2) M10 bolt