Take note! This safety alert symbol found throughout this manual is used to call
your attention to instructions involving your personal safety and the safety of
others. Failure to follow these instructions can result in injury or death.
This symbol means:
ATTENTION!
BECOME ALERT!
YOUR SAFETY IS INVOLVED!
Signal Words
Note the use of the signal words DANGER, WARNING and CAUTION with the safety
messages. The appropriate signal words for each has been selected using the following
guidelines:
DANGER: indicates an imminently hazardous situation that, if not avoided, will result in
death or serious injury.
WARNING: indicates a potentially hazardous situation that, if not avoided, could result
in death or serious injury, and includes hazards that are exposed when guards are
removed. It may also be used to alert against unsafe practices.
CAUTION: indicates a potentially hazardous situation that, if not avoided, may result in
minor or moderate injury.
1 - GENERAL INFORMATION
1.01 - General
1.02 - Model and Serial Number ID
1.03 - Assembly Instructions
2 - SAFETY PRECAUTIONS
2.01 - Preparation
2.02 - Starting and Stopping
2.03 - Messages and Signs
3 - OPERATION
3.01 - Operational Safety
3.02 - Set Up
3.03 - Cutting Height Adjustment
3.04 - Pre-Operational Check
3.05 - Attaching to the Tractor
3.06 - Start Up
3.07 - Working Speed
3.08 - Operating Techniques
3.09 - Uneven Terrain
3.10 - Removing Mower from the Tractor
4 - MAINTENANCE
4.01 - Maintenance Safety
4.02 - Service
4.03 - Blade Maintenance
4.04 - Belt Tension
4.05 - Belt Replacement
4.06 - Driveline
4.07 - Transport
5 - REPAIR PROCEDURES
5.01 - Gearbox
5.02 - Blade Spindle
5.03 - Suggested Spare Parts
5.04 - Storage
6 - TROUBLESHOOTING
7 - PRE-DELIVERY CHECKLIST
8 - PARTS MANUAL
4
4
4
5
7
7
8
8
10
10
12
13
13
14
15
16
16
18
18
19
19
20
21
23
24
25
26
29
29
29
29
30
31
32
33
INDEX3CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
1 - GENERAL INFORMATION
Thank you and congratulations for having chosen our implement.
Your new grooming mower is a technologically advanced machine constructed of high
quality sturdy components that will fulfill your working expectations.
Read this manual carefully. It will instruct you on how to operate and service your
mower safely and correctly. Failure to do so could result in personal injury and/or in
equipment damage.
1.01 - General
CAUTION: All hardware is metric. Only metric tools should be used. Other tools
that do not fit properly can slip and cause injury.
CAUTION: Right hand and left hand sides of the implement are determined by
facing in the direction the implement will travel when going forward (see fig. 4).
1.02 - Model and Serial Number ID
Attached to the frame is an ID plate showing the model and the serial number. Record
your implement model and serial number in the space provided below. Your dealer
needs this information to give you prompt, efficient service when you order parts.
Model #:
Serial #:
GENERAL INFORMATION4CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
Warranty does not cover the following:
1. Cleaning, transporting, mailing and service call charges.
2. Normal wear items such as belts, blades, bearings, drivelines, shear pins, slip
clutches, etc.
3. Depreciation or damage caused by normal wear, accidents, improper
maintenance, improper protection or improper use.
4. The use of non original spare parts and accessories.
Your Authorized Company Dealer has genuine parts in stock. Only these approved
replacement parts should be used.
This limited warranty covers defective material and workmanship. The cost of normal
maintenance or repairs for accidents or improper use and related labor will be borne by
the owner.
1.03 - Assembly Instructions
4
1
5
2
3
Fig. 2
1. inner spacer
2. top hitch plate
3. top hitch support
4. bolt
6
5. top hitch arm
6. lower hitch arm
7
8
7. front support plate
8. front roller
1. Unbolt the wheel arms and discard the mounting bracket.
2. Separate the wheel arms and remove the hardware bag secured between them.
3. Important: Remove the belt shields to inspect around the belt area and
under the gearbox central plate to be sure the area is clear of packing
material such as blocks of wood, paper, etc.
4. Bolt the wheel arm assemblies to the mower deck with the flat washer and lock
nuts. There is no difference between left/right or front/rear. Be sure both
assemblies are securely mounted.
5. Assemble each wheel to the yokes with one 14x140 mm. bolt and one inner
bushing. Tighten down snugly. The wheel should turn freely but have no side to
side movement.
6. Replace the belt shields.
7. Bolt up the top hitch arms to the inside of the rear support plates on the rear of
the mower (see fig. 3).
GENERAL INFORMATION5CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
8. Bolt up the top hitch supports to the outside of the front support plates welded to
the front of the deck (see fig. 2).
9. Bolt up the top hitch plate with the 16x150 mm. bolt. It should be bolted as
follows: bolt, top hitch support, top hitch arm, top hitch plate, spacer, top hitch
arm, top hitch support, lock nut. Tighten the lock nut down securely, the top
hitch plate should be able to swivel 360° (see fig. 2).
10.Install the lower hitch arms onto the top hitch supports. Tighten the bolts holding
the lower hitch arms. Be sure they are able to swivel (see fig. 2).
11.Grease wheel arms, and spindles. Check the gearbox for oil. It should be
approximately 1/2 filled.
2
3
5
Fig. 3
2. top hitch plate
3. top hitch support
5. top hitch arm
9
9. rear support plate
GENERAL INFORMATION6CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
2 - SAFETY PRECAUTIONS
Safety is the primary concern in the design and manufacture of our products.
Unfortunately our efforts to provide safe equipment can be wiped out by a single
careless act of an operator.
In addition to the design and configuration of equipment, hazard control and accident
prevention are dependent upon the awareness, concern, prudence and proper training
of personnel involved in the operation, transport, maintenance and storage of
equipment.
It is the operator's responsibility to read and understand all safety and operating
instructions in the manual and to follow these.
Allow only properly trained personnel to operate the mower. Working with unfamiliar
equipment can lead to careless injuries. Read this manual, and the manual for your
tractor, before assembly or operating, to acquaint yourself with the machines. It is the
mower owner's responsibility, if this machine is used by any person other than yourself,
is loaned or rented, to make certain that the operator, prior to operating, reads and
understands the operator's manuals and is instructed in safe and proper use.
2.01 - Preparation
1. Before operating equipment read and understand the operator's manual and the
safety signs (see fig. 4).
2. Thoroughly inspect the implement before initial operation to assure that all
packaging materials, i.e., wires, bands, and tape have been removed.
3. Personal protection equipment including hard hat, safety glasses, safety shoes,
and gloves are recommended during assembly, installation, operation,
adjustment, maintaining and/or repairing the implement.
4. Operate the mower only with a tractor equipped with an approved
Roll-Over-Protective-System (ROPS). Always wear your seat belt. Serious injury
or even death could result from falling off the tractor.
5. Clear area to be cut of stones, branches or other debris that might be thrown,
causing injury or damage.
6. Operate only in daylight or good artificial light.
7. Ensure mower is properly mounted, adjusted and in good operating condition.
8. Ensure that all safety shielding and safety signs are properly installed and in
good condition.
SAFETY PRECAUTIONS7CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
2.02 - Starting and Stopping
1. Be sure that no one is near the machine prior to engaging or while the machine is
working.
2. Be sure the tractor is in "Neutral" before starting engine.
3. Mower operating power is supplied from tractor PTO. Refer to your tractor
manual for PTO engagement and disengagement instructions. Always operate
PTO at 540 rpm. Know how to stop the tractor and mower quickly in case of an
emergency.
4. When engaging PTO, the engine rpm should always be low. Once engaged and
ready to start cutting, raise PTO speed to 540 rpm and maintain throughout
cutting operation.
5. Check the tractor master shield over the PTO stub shaft. Make sure it is in good
condition and fastened securely to the tractor. Purchase a new shield if old shield
is damaged or missing.
6. After striking an obstacle, disengage the PTO, shut the tractor down and
thoroughly inspect for damage before restarting.
7. Never engage the PTO until the mower is in the down position and resting on the
ground. Never raise the mower until all blades have come to a complete stop.
2.03 - Messages and Signs
1. Read and adhere to all safety and operating decals on this machine (see fig. 4).
2. Before dismounting tractor: allow moving parts to stop, stop engine, set brake
and remove the key of unattended equipment.
3. Keep away from rotating blades and driveline.
4. Keep guards and shields in place and in good condition.
5. Do not mow with bystanders in area.
6. Allow no riders on tractor or mower.
7. Allow moving parts to stop before repair.
8. Securely support mower before working underneath.
Additional warning and operating decals are available at no extra charge. Please specify
model and serial number when ordering.
SAFETY PRECAUTIONS8CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
Fig. 4 - Safety Decals; Replace immediately if damaged.
SAFETY PRECAUTIONS9CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
3 - OPERATION
You have purchased a three spindle mower designed especially for the mowing of
grassy areas where a highly professional cut is required without wasting time.
This mower is perfect for the maintenance of parks, private lawns, industrial parks,
airports, hospital grounds, schools, highways, golf courses, sport complexes, etc. The
grooming mower, for tractors up to 30 HP, come in working widths of 4’, 5' and 6'. The
mower can be either tractor front or rear mounted and is available in rear discharge. On
your mower, the tractor PTO transmits its power through a driveline to a speed multiplier
gearbox. A pulley is attached to the pinion gear shaft of the gearbox which, via high
resistance belts, transmits power to pulleys coupled to the three individual spindle
shafts. Blades are secured to these shafts which turn at a high blade tip speed to cut
the grass.
Our grooming mower comes equipped with 4 swivel wheels. Aside from regulating the
cutting height, the wheels are set in such a way as to allow the mower to follow the
contour of the terrain and give a precise level cut even in undulating conditions.
3.01 - Operational Safety
CAUTION: Our mowers are designed considering safety as the most important
aspect and are the safest available in today's market. Unfortunately, human
carelessness can override the safety features built into our machines. Injury
prevention and work safety, aside from the features on our mowers, is very much
due to the responsible use of the equipment. It must always be operated
prudently following with great care, the safety instructions laid out in this manual.
1. The use of this equipment is subject to certain hazards which cannot be
prevented by mechanical means or product design. All operators of this
equipment must read and understand this entire manual, paying particular
attention to safety and operating instructions, prior to using.
2. Do not operate the tractor and mower when you are tired, sick or when using
medication.
3. Keep all helpers and bystanders at least several feet from a rotary mower. Only
properly trained people should operate this machine.
4. The majority of accidents involve entanglements on the driveline, injury of
bystanders by objects thrown by the rotating blades, and operators being
knocked off the tractor by low hanging limbs and then being run over by the
mower. Accidents are most likely to occur with machines that are loaned or
OPERATION10CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
rented to someone who has not read the operator's manual and is not familiar
with a rotary mower.
5. Always stop the tractor, set brake, shut off the tractor engine, remove the ignition
key, lower implement to the ground and allow mower blades to come to a
complete stop before dismounting tractor. Never leave equipment unattended
with the tractor running.
6. Never place hands or feet under mower with tractor engine running or before you
are sure all motion has stopped. Stay clear of all moving parts.
7. Do not allow riders on the mower or tractor at any time. There is no safe place for
riders.
8. Do not operate unless all personnel, livestock and pets are several feet away to
prevent injury by thrown objects.
9. Before backing up, disengage the mower and look behind carefully.
10.Install and secure all guards and shields before starting or operating.
11.Keep hands, feet, hair and clothing away from moving parts.
12.This rotary mower is designed for use only on tractors with 540 rpm power take
off.
13.Never operate tractor and mower under trees with low hanging limbs. Operators
can be knocked off the tractor and then run over by the rotating blades.
14.The rotating parts of this machine have been designed and tested for rugged
use. However, they could fail upon impact with heavy, solid objects such as steel
guard rails and concrete abutments. Such impact could cause the broken objects
to be thrown outward at very high velocities. To reduce the possibility of property
damage, serious injury, or even death, never allow the cutting blades to contact
such obstacles.
15.Frequently check mower blades. They should be sharp, free of nicks and cracks
and securely fastened.
16.Stop mower immediately upon striking an obstruction. Turn engine off, remove
key, inspect and repair any damage before resuming operation.
17.Stay alert for holes, rocks and roots in the terrain and other hidden hazards.
Keep away from drop-offs.
18.Use extreme care and maintain minimum ground speed when transporting on
hillside, over rough ground and when operating close to ditches or fences. Be
careful when turning sharp corners.
19.Reduce speed on slopes and sharp turns to minimize tipping or loss of control.
Be careful when changing directions on slopes. Do not start or stop suddenly on
slopes. Avoid operation on steep slopes.
20.When using a unit, a minimum 20% of tractor and equipment weight must be on
tractor front wheels. Without this weight, tractor could tip over, causing personal
injury or death. The weight may be attained with a front end loader, front wheel
weights, ballast in tires or front tractor weights. When attaining a minimum 20%
of tractor and equipment weight on the front wheels, you must not exceed the
ROPS weight certification. Weigh the tractor and equipment. Do not guess or
estimate!
OPERATION11CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
21.Inspect the entire machine periodically1. Look for loose fasteners, worn or broken
parts, and leaky or loose fittings.
22.Use only the driveline supplied with the mower. Do not use it if it is missing any
shield or safety protection.
23.Pass diagonally through sharp dips and avoid sharp drops to prevent "hanging
up" tractor and mower.
24.Avoid sudden starts and stops while traveling up or downhill.
25.Always cut down slopes; never across the face. Avoid operation on steep slopes.
Slow down on sharp turns and slopes to prevent tipping and or loss of control.
3.02 - Set Up
Notice to dealer: Pre-delivery setup and service including lubrication is the
responsibility of the authorized dealer. It is up to him to assure that the machine is in
perfect condition and ready to be used. It is his responsibility to ensure that the
customer is aware of all safety aspects and operational procedures for the mower. He
must also fill out the Pre-Delivery Checklist2 prior to delivering the mower.
CAUTION: Stand clear of bands when cutting as they could be under sufficient
tension to cause them to fly loose. Take care in removing bands and wire, they
often have extremely sharp edges and cut very easily.
Fig. 5
Rear discharge grooming
mower, front mounted.
As mentioned above, all our grooming mowers may be either tractor front or rear
mounted. To change our mowers from front mount to rear, or vice versa, it can easily be
done at our authorized dealerships. This is accomplished by simply turning the three
point hitch and the gearbox 180 degrees (see fig. 5 & 6).
1
2
OPERATION12CUB CADET YANMAR
See chapter 4 - Maintenance.
See chapter 7 - Pre-Delivery Checklist.
FM48/FM60/FM72OPERATOR’S MANUAL
3.03 - Cutting Height Adjustment
WARNING: Keep hands and feet away from moving blades.
Be sure tractor engine is off, parking brake is locked, and key is removed before
making any adjustments.
Never rely on the tractor lift system. Install blocks or stands under the mower
deck to prevent it from falling.
Fig. 7
The cutting height is
adjusted by moving
the height adjustment
spacers on the wheel
yokes above or below
the wheel arm.
The cutting height is the distance from the blades to the ground. The cutting height is
adjusted by moving the spacers on the wheel yokes. Placing spacers between the
wheel arm and the wheel yoke raises the cutting height by the size of the spacer.
Removing the spacers, lowers it by the same height (see fig. 7).
Be sure all wheel arms are adjusted equally. This is the only way to ensure a completely
uniform cut.
IMPORTANT: Very low cutting heights should be avoided. Damaging shock loads
occur when the blades strike the ground repeatedly. This can cause damage to
the mower.
Cutting lower than 2" under most circumstances should be avoided.
The cutting height is adjustable from 1" to 4".
A front anti-scalp roller is also available upon request. This accessory is particularly
helpful when cutting over uneven terrain.
OPERATION13CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
3.04 - Pre-Operational Check
Check each of the following, carefully, prior to engaging the equipment:
1. The spindle bearings have been greased.
2. The belts for proper tension.
3. The oil in the gearbox.
4. The driveline cross & bearings have been greased.
5. No wrappings or foreign objects are around the blades, belts or driveline.
6. The blades are properly installed and the blade bolts properly torqued3.
7. All hardware is tight.
8. The tractor, to ensure correct direction of PTO and rpm speed.
9. All safety shields and guards are in place and tightly attached.
10.No people or animals are in the work area.
11.When working, make sure the tractor hitch is in the "float" position, in order to
allow the mower to follow the contour of the ground.
DANGER: Stay clear of rotating driveline. Entanglement in rotating driveline can
cause serious injury. Disengage PTO, engage parking brake or place
transmission in "Park", shut off the tractor and remove the key before working
around hitch, attaching or detaching driveline, making adjustments, servicing or
cleaning the machine.
3.05 - Attaching to the Tractor
Only use this model implement with tractors in the correct power range4. Never use this
mower with tractors over 30 HP.
CAUTION: Check the tractor PTO rpm to ensure it is set at 540 and turns
clockwise.
CAUTION: Always ensure that the tractor tire pressure is correct according to the
tractor operator's manual.
DANGER: Failure to ensure a secure coupling of the implement to the tractor can
cause injury and damage to the implement or tractor.
3
4
See table 1, page 28.
See table 2, page 28.
OPERATION14CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
To attach the mower to the tractor do the following:
1. Back the tractor up to the mower in order to slip the tractor hitch arms over the
hitch pins welded to the mower hitch arms. Turn off the tractor engine. Secure
them in place with the lynch pins.
2. Adjust the tractor sway blocks or chains to remove all side movement.
3. Attach the top link. Adjust tractor top link to allow the mower to follow the ground
contour and yet remain as level as possible when raised to transport position.
4. Install the shielded driveline to the tractor by first lining up the splines and
depressing the snap pin. Push the yoke onto the PTO shaft as far as it will go.
Release the pin and pull back slowly until the pin clicks in place. Repeat this
operation on the implement end.
5. Attach the driveline chains to the tractor and to the mower to keep the driveline
protection from turning. The chains should not be too tight.
3.06 - Startup
DANGER: The mower must always be lowered to the ground before starting
tractor engine or engaging PTO lever.
Lower mower to the ground with the tractor rock shaft control lever. With the engine
idling, slowly engage the PTO drive. Move the throttle lever until the PTO speed
indicated on the mower is obtained.
The mower is set for a PTO speed of 540 rpm.
Shift the transmission to a slow speed gear and start forward, increase the ground
speed by shifting upward until the desired speed is obtained. Do not mow in reverse
unless absolutely necessary and only after careful observation of the area behind the
mower.
CAUTION: Do not operate this mower at a PTO speed or direction of rotation
other than that shown on the mower. Serious damage can occur to the machine
and/or the operator.
Before starting to mow, never forget that the operator is responsible for the following:
1. Safe and correct driving of the tractor and mower.
2. To learn precise safe operating procedures for both the tractor and the mower.
3. To ensure all maintenance and lubrication has been performed on the mower.
4. To have read and understood all safety aspects for the mower in the operator's
manual.
5. To have read and understood all safety decals on the mower.
6. Checking the condition of the blades. Worn or damaged blades should be
changed before starting5.
5
See section 4.03 - Blade Maintenance.
OPERATION15CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
7. Checking to ensure that the cutting edge is the leading edge of the blade6.
8. Checking that there is no wire, weed, grass or other material wrapped around
blades.
9. Checking to see if front weights need to be added to the tractor in order to
maintain balance.
10.Checking the tractor tires for the proper pressure in accordance with the tractor
operator's manual.
11.Checking the side discharge chute (on side discharge mowers only) to ensure
that it is properly in place. Checking that the PTO shield, belt shields and allother shielding are on the machine and securely in place.
12.Making sure the proper attire is worn. Avoiding loose fitting clothing which can
become entangled. Wearing sturdy, tough-soled work shoes and protective
equipment for eyes, hands, ears and head. Never operate tractor or implements
in bare feet, sandals or sneakers.
13.Checking area for stones, branches and other debris that might be thrown.
14.Ensuring proper lighting is available, sunlight or good artificial lighting.
3.07 - Working Speed
The mowing speed depends on ground conditions, tractor HP, mowing height, and
grass thickness. Only a test run will enable you to gauge the optimal working speed for
your conditions.
Under most conditions a 3 to 8 mph ground speed is best. As a rule of thumb, and if the
conditions permit, grass dispersion is increased by higher ground speeds.
In order to obtain the best cut possible, always keep the tractor rpm up to the speed
indicated on the mower. When increasing or decreasing mowing ground speed, always
use gear selection, not engine speed. This will maintain the constant maximum blade
speed necessary for a clean cut.
3.08 - Operating Techniques
All of the following factors are important in selecting the proper forward speed:
1. Height of grass.
2. Type of grass.
3. Density of grass.
4. Type of terrain.
5. Grass condition, wet or dry.
This mower has been designed to cut grass with heights from 4" to 8". It is
recommended to avoid cutting grass taller than 10".
For the best results, try cutting the grass at least once per week during growing season.
Tall, dense grass should be cut at low speed, while thin medium grass can be cut at a
faster ground speed. For cleaner cuts and efficient mowing, the blades must be kept
7
sharp
6
7
.
See section 4.03 - Blade Maintenance.
See Sharpening Blades in section 4.03 - Blade Maintenance.
OPERATION16CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
Always operate PTO at 540 rpm. This is necessary to maintain proper blade speed and
obtain a clean cut.
Under certain conditions, tractor tires may roll some grass down and prevent it from
being cut at the same height as the surrounding area. If this occurs reduce the tractor
ground speed but maintain a 540 rpm engine speed. The lower ground speed will permit
the grass to at least partially rebound. Under some conditions grass will not rebound
enough to be cut even, resulting in an uneven appearance. In general, lower cutting
height gives a more even cut with less tendency to leave tire tracks. If cut is still not
satisfactory, cut the area twice.
Mow extremely tall grass twice. On the first pass use a high cutting height. On the
second pass position the mower at the desired height and when practical, mow at a
right angle in travel to the first pass.
Plan your pattern to travel straight forward whenever possible.
It is better to cut grass more often, than too short. Short grass deteriorates rapidly in hot
weather and invites weed growth during growing season.
If at any time the mower should jam resulting in belt slippage of 2 or more seconds,
raise the mower and continue for 2-3 minutes. This will allow the pulleys to cool and
prolong belt life.
DANGER: The mower blades can throw objects hundreds of feet which could
result in personal or property damage. Pick up all rocks and other debris before
mowing. Enter new areas carefully. Cut grass higher at first, allowing mower to
clear hidden objects.
CAUTION: For emergency reasons learn how to stop the tractor and mower
quickly. On the grooming mowers always disengage the PTO, lock parking brake,
stop engine and allow the mower blades to come to a complete stop before
dismounting the tractor.
OPERATION17CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
3.09 - Uneven Terrain
DANGER: Be careful of rollover when operating tractor and mower over uneven
ground.
In extremely uneven terrain rear wheel weights, front tractor weights, and/or tire ballast
should be used to improve stability.
When mowing over uneven terrain, observe the type of terrain and develop a safe
mowing pattern. Whenever traction or stability is doubtful, first test drive over the terrain
with the PTO disengaged.
Operate the mower up and down steep slopes, not across slopes, to prevent the tractor
from tipping. Avoid sudden stops and starts, and slow down before changing directions
on a slope.
Pass diagonally through sharp dips and avoid sharp drops to prevent hanging up the
tractor and mower.
Slow down on sharp turns and slopes to prevent tipping or loss of control.
Avoid tipping the mower while cutting. Watch for holes, roots or other hidden objects.
Do not cut near the edge of a gully, ditch or stream bank.
3.10 - Removing Mower from the Tractor
CAUTION: Disengage tractor PTO. Set parking brake. Stop engine and remove
key from ignition. Disconnect mower driveline from tractor PTO shaft. Collapse
driveline and store in appropriate place. Disconnect three point linkage and
carefully drive tractor away from mower.
OPERATION18CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
4 - MAINTENANCE
DANGER: Stop engine, lock parking brake and remove key before performing any
service or maintenance.
Never rely on the tractor lift system. Install blocks or stands under the mower
deck to prevent it from falling.
Always use personal protection devices, such as glasses or gloves when
performing maintenance.
Keep fingers out of slots to prevent injury.
4.01 - Maintenance Safety
1. Good maintenance is your responsibility.
2. Keep service area clean and dry. Be sure electrical outlets and tools are properly
grounded. Use adequate light for the job at hand.
3. Make sure there is plenty of ventilation. Never operate the engine of the towing
vehicle in a closed building. The exhaust fumes may cause asphyxiation.
4. Make no repair or adjustments with the tractor engine running. Before working on
the machine, disengage the PTO, shut off the engine, set the brakes, and
remove the ignition key.
5. Be certain all moving parts on attachment have come to a complete stop before
attempting to perform maintenance.
6. Never work under equipment unless it is blocked securely.
7. Always use personal protection devices such as eye, hand and hearing
protectors, when performing any service or maintenance.
8. Frequently check mower blades. They should be sharp, free of nicks and cracks
and securely fastened.
9. Periodically tighten all bolts, nuts and screws and check that all cotter pins are
properly installed to ensure unit is in a safe condition.
10.When completing a maintenance or service function, make sure all safety shields
and devices are installed before placing unit in service.
11.Do not attempt to mount a tire unless you have the proper equipment and
experience to do the job.
12.Inflating or servicing tires can be dangerous. Whenever possible, trained
personnel should be called to service and/or mount tires.
13.After servicing, be sure all tools, parts and service equipment are removed.
MAINTENANCE19CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
14.Never replace hex bolts with less than grade five bolts unless otherwise
specified, i.e., shear bolts8.
15.Where replacement parts are necessary for periodic maintenance and servicing,
genuine replacement parts must be used to restore your equipment to original
specifications. The company will not claim responsibility for use of unapproved
parts and/or accessories and other damages as a result of their use.
16.Unauthorized modifications to the machine may impair the function and/or safety
of the machine and reduce its life. If equipment has been altered in any way from
original design, the manufacturer does not accept any liability for injury or
warranty.
4.02 - Service
The accompanying illustrations show lubrication points. The chart gives the frequency of
lubrication in hours, based on normal operating conditions. Severe or unusual
conditions may require more frequent lubrication.
Use a good quality SAE multipurpose type grease for all locations shown. Be sure to
clean fittings thoroughly before using grease gun.
Use 90 wt. gear oil in gearbox.
Hourly:
1. Check the condition of mower blades for nicks or dull edges. Sharpen if
necessary.
2. Replace bent or damaged blades9.
3. Also check blades for damage after hitting an obstruction.
4. Clean foreign material from mower deck and belt area.
Fig. 9
Lubrication of wheel yokes.
Every 8 hours:
1. Lubricate the driveline and the wheel yokes: apply two or three shots of
grease to the driveline cross and bearings and the telescoping shafts; apply the
8
9
MAINTENANCE20CUB CADET YANMAR
Refer to table 1 - Torque Specifications, for head identification marking.
See section 4.03 - Blade Maintenance.
FM48/FM60/FM72OPERATOR’S MANUAL
same amount to the wheel arm grease fittings (see fig. 9). See the driveline
manufacturer operator's manual for further information on the driveline.
2. Gearbox oil level: check gearbox oil level, it should be between 1/2 and 2/3 full. If
needed add either SAE 90 wt. or SAE 140 wt. gear oil.
Every 25 hours: check hardware tightness; mower vibrations can loosen bolts10.
Check tightness of the hardware periodically, using this table as a guide.
Every 50 hours:
1. Lubricate the three spindles with two or three shots of multipurpose grease (see
fig. 10). The top grease fittings are easily accessible from the top of the deck by
simply removing the plastic dust guards.
2. Check belt tension11.
Fig. 10
Lubrication of the spindle
shafts easily accessible from
the top of the deck.
4.03 - Blade Maintenance
WARNING: To avoid possible injury always wear proper eye and hand protection
when servicing mower blade.
In order for the mower to work properly and to always obtain a precision cut with lower
HP requirements thus keeping cost down, proper blade maintenance is important.
Blades must be kept sharp, at their original length and corners maintained. A blade
must be replaced if, due to wear or damage, its original shape has been distorted.
10
11
MAINTENANCE21CUB CADET YANMAR
See table 1, page 28.
See section 4.04 - Belt Tension.
FM48/FM60/FM72OPERATOR’S MANUAL
Mower's spindle assembly.
1
2
3
4
5
6
7
8
9
10
Fig. 11
Ground
1. grease fitting
2. hexagonal nut
3. pulley
4. rotor support
5. cover
7. blade
8. cup washer
9. blade bolt
10. cutting edge close to ground
11. lift wing
6. shaft
Removing or installing blades
If the mower blades need to be removed, do the following:
1. The blade turns in a counter clockwise direction when viewed from the bottom
of the deck. The cutting edge must be towards the direction of rotation. The lift
wing of the blades is closest to the deck and the cutting edge away from it (seefig. 11).
2. Install the cup washer (see fig. 11) over the blade bolt and secure the blade in
place as described above.
3. With a wrench, block the spindle and tighten the bolt to 103 lb.ft. (see fig. 12).
4. To remove the blades reverse the procedure.
11
WARNING: Do not substitute blades or any bolt for the blade retaining bolt.
Company blades and blade retaining bolts are specially made for this application.
Using non original parts can effect the quality of cut and may also cause damage
to the mower.
MAINTENANCE22CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
DANGER: Proper torque must be used when tightening the blade retaining bolt. If
these safety precautions are not followed, the blade could come off during
operation and be thrown hundreds of feet from the mower.
1
2
Fig. 12
3
1. spindle
2. blade
3. blade bolt
Sharpening Blades
Blade sharpening is extremely important in order to get the best cutting results. Sharp
blades permit a high quality cut and also reduces HP thus lowering cost.
To sharpen blades, first remove them following the above instructions.
Place the blade in a vise and sharpen them by using a hand file or grinder. Do notsharpen the blades to a sharp cutting edge. The cutting edge should be between 1/64"
to 1/32" to prevent excessive pitting and dulling of the blades. Sharpen both ends of the
blade equally for balance and always maintain corners. Always keep all three blades
sharpened equally in order to maintain balance.
CAUTION: Unbalanced or warped blades can cause damage to the mower and/or
personal injury. Replace damaged blades before operating the mower. Sharpen
both ends of the mower blades equally or until the blade is balanced.
4.04 - Belt Tension
Belt tension control
Check the belt tension by applying a force of 12-15 lb. pushing against the belt halfway
between the pulleys. The belt deflection should be between 5/16"-3/8".
Belt tension adjustment
The finishing mower has an automatic belt tensioner. The tension is created by a spring
connecting a tensioner pulley to a fixed hitch plate with 3 positions (see fig. 13). Upon
MAINTENANCE23CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
delivery, the spring is located in the first position. When the belt stretches after use,
adjust the tension by relocating the spring in the other two holes. If the belt has
stretched to the point that the belt is not tight enough even in the last hole it is
necessary to replace the belt.
1
2
3
Fig. 13
1. tensioner
2. belt
3. pulley
4. spring
4
5
5. hitch plate
4.05 - Belt Replacement
If the belt has been stretched or damaged to the point where the proper tension can not
be obtained it must be changed.
2
6
7
3
5
1
5
Fig. 14
4
3
1. drive pulley
2. central pulley
3. side pulley
4. belt
5. belt tensioner
6. hitch plate
7. spring
MAINTENANCE24CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
To replace the belt do the following:
1. Remove belt shields. Clean foreign material from the mower deck and belt area.
2. Release spring tensioner to loosen belt.
3. Loosen rear nuts holding central plate (do not remove them).
4. Remove front nuts holding central plate (see fig. 13).
5. Lift the front of the central plate and remove old belt.
6. Replace new belt starting from the right spindle pulley (see fig. 14).
7. Lower central plate.
8. Replace front nuts. Tighten front and rear nuts holding down central plate.
9. Replace spring tensioner.
10.Reinstall the belt shields.
4.06 - Driveline
DANGER: Only use the original driveline supplied with this mower, and always
with the safety shielding.
Carefully read and file away the driveline operator's manual supplied by the
manufacturer. The following does not substitute the information found in the
driveline manual.
Fig. 15
min. 6"
MAX.
min. 2"
MIN.
MAINTENANCE25CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
In the collapsed position the driveline should be approximately 2" from bottoming out to
prevent possible damage to the tractor or implement. When the PTO is in the maximum
extended position, the ideal minimum overlap of the two halves should be approximately
6" (see fig. 15).
If determined that the driveline is too long. Follow these procedures to adjust the length:
1. Separate the two driveline halves. Connect one half to the tractor PTO and the
other half to the mower.
2. Raise and lower the mower with the 3 point hitch to find the position where the
driveline is shortest. Hold the half shafts side by side and mark the desired length
on the outer female tube guard leaving a 11/2" gap between the end of the guard
tube and bell guard.
3. Cut off both guard tubes the same amount as marked in step 2.
4. Shorten both drive tubes the same amount as guard tubes.
5. De-burr and clean filings from drive tubes and apply grease to outside of inner
telescoping tube.
Reassemble the driveline halves and connect to tractor and mower. Raise and lower
mower again to be sure driveline does not bottom out in its shortest position and has a
minimum overlap of 6" in the longest position.
CAUTION: Always work with the driveline as straight as possible. This will
prolong its life and that of its components. It is advised not to work at an angle
greater than 15 degrees.
4.07 - Transport
Before raising the mower for transport, the tractor top link must be adjusted so when
lifted, the rear of the machine is higher than the front (the mower's nose is tilted
downward). To do this, shorten the tractor top link until the top hitch plate is locked
forward and no longer able to pivot. This will keep the mower locked in position and
minimize the shaking and bouncing during transport which can damage the hitch or
frame.
When raising the mower be sure the PTO driveline does not hit either the mower or the
tractor. During transport the mower should not be lifted over 14"-16" from the ground.
CAUTION: Make sure PTO is disengaged and blades have stopped turning before
raising mower to full transport position.
Do not tow tractor and mower behind other vehicles. Use a properly equipped
trailer with heavy tie-downs for towing operations.
MAINTENANCE26CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
Before transporting:
1. Disengage PTO.
2. Shorten tractor top link until top hitch plate is locked.
3. Raise machine and lock rock shaft control lever.
4. Always select a safe ground speed that is appropriate for the terrain.
5. Beware of traffic on public roads. Install a SMV (Slow Moving Vehicle) sign when
traveling on roads or streets.
6. Reduce ground speed when turning and take care that the mower does not strike
obstacles such as trees, fences or buildings.
MAINTENANCE27CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
TABLE 1 - TORQUE SPECIFICATIONS
Class 10.9Class 8.8Diameter
lb.ftN.mlb.ftN.m
M 8
M 10
M 12
M 14
M 16
M 18
M 20
When using locks, nuts, increasing torque values by 5%.
26351825
52703750
921256690
148200103140
225305155215
309420217295
438590302420
TABLE 2 - FINISHING MOWER - TECHNICAL FEATURES
Rear Discharge, for tractors up to 30 HP, PTO 540 rpm, 3 point hitch cat. 1
CAUTION: All repair procedures must be done by authorized dealerships. It is not
recommended that untrained individuals perform any repair work. The following
operations are detailed for qualified personnel only.
5.01 - Gearbox
To remove the gearbox do the following:
1. Remove the belt12 (see fig. 13).
2. Remove the nut holding the pulley to the gearbox pinion shaft.
3. Remove the pulley.
4. Remove the nuts holding the gearbox to the central plate.
5. Remove the gearbox.
If it is necessary to replace any part on the inside of the gearbox, it is important to
replace oil seals or gaskets to ensure a tight fit when reassembling.
To replace the gearbox, follow the above instructions in reverse order.
5.02 - Blade Spindle
To remove a blade spindle do the following:
1. Remove the belt13.
2. Remove the nut holding the pulley to the spindle shaft (see fig. 11).
3. Remove the blades14.
4. Unbolt the bolts holding the rotor support to the mower deck.
5. If necessary remove and replace the bearings from the rotor using presses or
extractors.
6. Reassemble in reverse order ensuring that the nut securing the top pulley
(see fig. 11) is tightened to 108 lb.ft.
5.03 - Suggested Spare Parts
It is suggested that the following spare parts be kept on hand for the finishing mower at
all times to prevent a minor problem from delaying work.
12
13
14
REPAIR PROCEDURES29CUB CADET YANMAR
See section 4.05 - Belt Replacement.
See section 4.05 - Belt Replacement.
See section 4.03 - Blade Maintenance.
FM48/FM60/FM72OPERATOR’S MANUAL
QuantityDescription
3Blades
3Blade bolts
3Washers
1Belts
5.04 - Storage
After seasonal use it is important to perform the following for prolonged storage:
1. Wash the mower carefully.
2. Inspect the mower and replace worn or damaged parts.
3. Tighten all hardware. Grease all areas indicated under Maintenance
4. Loosen the belts if the mower is to be stored for an extended length of time.
5. Cover the mower from the elements in order to have it in perfect conditions for
the start of the next season.
15
.
15
REPAIR PROCEDURES30CUB CADET YANMAR
See chapter 4 - Maintenance.
FM48/FM60/FM72OPERATOR’S MANUAL
6 - TROUBLESHOOTING
WARNING: Be sure tractor engine is off, parking brake is locked, and key is
removed before making any adjustments.
SOLUTIONPOSSIBLE CAUSEPROBLEM
Uneven cutting.
not cutting.
Belt slippage.
Mower vibrates.
Grass build up at
exit.
Cup washer not between blade
and bolt.
Ground speed too fast.
Blades need sharpening.
Caster wheels uneven
Direction of blades is wrong.Blades turning but
Lack of tension.
Object clogging mower.
Debris in pulleys.
Object wrapped around blade.
Belt damaged.
Wet grass.
Grass too high.
Tractor rpm too slow.
Check washer location at all 3
spindles.
Shift to lower gear.
Sharpen blades.
Adjust wheel position.
Blade should turn counter
clockwiserotation when you face
deck bottom. See Installing
Blade section.
Tighten belt.
Remove object.
Clean pulleys.
Remove object.
Replace belt.
Tighten belt.Belt slipping.Belt squeal.
Allow grass to dry.
Raise mower, shift to lower gear,
make two passes over grass.
Mow grass high 1st pass, 2nd
pass cut to desired height.
Increase tractor rpm, check
engine and PTO speeds.
Belts are tight when
installing.
Streaking conditions
in swath.
Cut grass windrows.
TROUBLESHOOTING31CUB CADET YANMAR
Wrong belt size.
Installed belts incorrectly.
Too wet to mow.
Blades cannot cut grass
pressed down by wheels.
Dull blades.
Blades worn down, preventing
overlap.
Ground speed too low.
Tractor rpm too slow.
Check belt size.
See Replacing Belts section.
Allow grass to dry.
Maintain engine speed and shift
to lower gear.
Sharpen blade. See Sharpening
Blades section.
Change blades.
To the dealer: Inspect the machine thoroughly after assembly to assure it is
functioning properly before delivering it to the customer. The following checklist
is a reminder of points to cover. Check off each item as it is found satisfactory or
after proper adjustment is made.
Gearbox oil level.
Guards and shield properly fastened.
Lubrication of grease fittings.
All hardware properly tightened.
All decals properly located and readable (see fig. 4).
Blades properly installed, blade bolts & nuts tightened.
Overall condition (touch up scratches, clean and polish).
Test run, check for excessive vibration or overheating of bearings.
Operator's Manual.
Review the operator's manual with the customer. Explain the following:
Warranty.
Safe operation and service.
Correct machine installation and operation.
Daily and periodic lubrication, maintenance and inspections.
Troubleshooting.
Operational procedures and storage.
Parts and service.
Give customer the operator's manual and encourage the customer to read the
manual carefully.
Model Number: __________ Serial Number: __________
2Top Hitch Support (Version A)
2Top Hitch Arm 48” (Version A)
2Top Hitch Arm 60” (Version A)
2Top Hitch Arm 72” (Version A)
1Spacer since 1/2007
1Upper Plate
1Bolt TE 16 x 140
9Nut D. 16
4Bolt TE 16 x 40
4Bolt TE 16 x 45
2Bolt TE 14 x 45
6Nut D. 14
2Hitch Block since 1/3/2005
2Lynch Pin
4Wheel Yoke
4Cotter Pin
4Spacer
4Bolt TE 14 x 140
2Wheel Arm 48”
2Wheel Arm 60”
2Wheel Arm 72”
4Grease Fitting
8Spacer 1”
4Spacer 1/2”
8Spacer 1/4”
2Bolt TE 10 x 90
10
2Flat Washer D. 10
2Spring Washer D. 10
2Nut D. 10
8Bolt TE 10 x 30
8Nut D. 10
2Linking Plate
1Driveline Hook (EC Only)
1Hook Support (EC Only)
PARTS MANUAL37CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
PARTS MANUAL38CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
Qty.Part DescriptionPart #Ref.
1Cotter Pin D. 2 (EC Only)005-442232
1Bolt TE 8 x 25009-144633
1Spring Washer D. 8000-314434
1Nut D. 8000-180635
4Hard Tire000-852636
4Air Tire000-8797
PARTS MANUAL39CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
PARTS MANUAL40CUB CADET YANMAR
FM48/FM60/FM72OPERATOR’S MANUAL
Qty.Part DescriptionPart #Ref.
3Pulley 120 x 1 48”000-85311
3Pulley 130 x 1 60”000-8666
3Pulley 160 x 1 72”000-8881
2Pulley Belt Tensioner000-85612
1Belt BX 98 48”000-86303
1Belt BX 112 60”000-8670
1Belt BX 140 72”000-8950
1Spring since 04/2007005-17404
1Pulley 250 x 1 000-86235
1Belt Tensioner Support 48” since 04/2006005-17416
1Belt Tensioner 60” & 72” since 04/2006 005-1745
1Hitch Plate 48”000-85717
1Hitch Plate 60” since 04/2006005-1755
1Hitch Plate 72” since 04/2006005-1757
1Bolt TE 10 x 35009-12818
1Belt Tensioner Fixing Bolt since 04/2006005-1751
1Flat Washer D. 16 since 04/2006005-17539
14Nut D. 10003-0156 10
1Bolt TE 10 x 35 009-128111
1Nut D. 10000-127912
1Bolt TE 20 x 65000-857613
1Nut D. 20000-550814
4Flat Washer D. 20004-655515
2Nut D. 20000-550716
3Nut D. 25000-669817
3Grease Fitting 002-903618
1Spacer000-68291
1Upper Plate000-68282
9Nut D.16000-55813
2Top Hitch Support005-65114
2Bolt TE 10 x 35009-12815
-Flat Washer D. 10003-01576
1Tractor Hitch Support005-18657
2U Bolt 001-12518
2Hitch Pin000-85019
4Spring Waher D. 12000-107710
6Nut D. 12000-303811
2Lower Hitch Arm000-689712
2Cotter Pin009-150713
4Bolt TE 16 x 45000-657814
1Bolt TE 16 x 140000-689115
4Bolt TE 16 x 40003-268716
2Top Hitch Arm 48”010-883217
2Top Hitch Arm 48” since 01/03/2005015-6521
2Top Hitch Arm 60”020-8832
2Top Hitch Arm 60” since 01/03/2005025-6521
2Top Hitch Arm 72”030-8832
2Top Hitch Arm 72” since 01/03/2005035-6521
1Roller Pin000-892918
1Front Roller006-735819
1Cotter Pin D. 4x50011-208720
1Right Roller Support000-892321
1Left Roller Support020-892422
-Bolt TE 10 x 20000-634923
4Flat Washer D. 10000-203424