Assembled in this manual are operation, lubrication, and maintenance instructions for the
International Cub Cadet 86, 108, 128, 129, 149,
and 169 Tractors. The material has been prepared
in detail to help you better understand the correct
care and efficient operation of your tractor. Before
you operate the tractor, study this manual care-fully.
New copies may be ordered from your dealer
at a nominal price.
have difficulties with the unit consult your
International Harvester dealer. UNDER NO CIR-
CUMSTANCES SHOULD YOU ATTEMPT TO
SERVICE THESE UNITS YOURSELF. Only your
dealer is authorized to repair or replace units on
this drive under the terms of the warranty. Should
you desire additional information not found in this
manual, contact your International Harvester
dealer.
Your local I nternational Harvester dealer is interested in the performance you receive from this
tractor. He has factory-trained servicemen, informed in the latest method of servicing tractors,
modern tools, and original-equ ipment I H service
parts which assure proper fit and good performance.
The International Cub Cadet 129, 149, and 169
Tractors have a hydrostatic drive. It is the best
hydraulic drive unit available and will require
minimum service if recommended operation and
maintenance procedures are followed. Should you
The I nternational Cub Cadet 86, 108, and 128
Tractors have a conventional clutch ana trans-
...
mission.
To obtain top performance and assure economical
operation the tractor should be inspected, depending on its use, periodically, or at least once a year,
by your International Harvester dealer.
When in need of parts, always specify the model,
chassis, and engine serial numbers, including the
prefix and suffix letters. Write these serial numbers
in the space provided on page 4.
Serial No. 500718 and above.
MODEL
DELIVERY
DATE
A variety of extra equipment and accessories isavailable.
Where operating and maintaining instruc-
tion is required, it is included in the instruction for
operating and maintaining the tractor. Disregard
LEFT and RIGHT indicate the left and right sides
of the tractor when facing forward in the driver's
seat. Reference to F RaNT indicates the grille end
of the tractor; to REAR the drawbar end.
the instructions for equipment not on your tractor.
This manual is for tractors with Serial No. 507 000 and above.
4
This symbol is used to call your attention to instructions
concerning your personal safety. Be sure to observe and
following these instructions.
Disengage all clutches and shift into neutral before
starting the engine.
Disengage power to any attachments and stop
engine before leaving operator's seat or making any
repairs or adjustments.
Know the controls and how to stop quickly -
READ THE OPERATOR'S MANUAL.
Do not allow children or adults to operate the
equ ipment without proper instruction.
Clear work area of objects which might be picked
up and thrown.
Disengage power to any attachment when trans-
porting or not in use.
Do not carry passengers of give rides. Keep children, pets, and by-standers a safe distance away.
Always disengage the power take-off, shift trans-
mission into neutral, set the parking brake, stop
the engine, and remove ignition key when leaving
the machine unattended.
Use care when pulling loads or using heavy
equipment: -A. Use only approved hitch points.
B. limit loads to those you can safety control.
C. Don't turn too sharp, and use care when
backing. D. Use counterweight or wheel weights
when suggested in Operator's Manual.
Watch out for traffic when crossing or near
roadways.
When using any attachments, never direct discharge
of material toward bystanders nor allow anyone
near the machine while in operation.
Handle gasoline with care -it is highly flammable:
-A. Use approved gasoline container. B. Never
remove the fuel tank cap or fill the fuel tank when
the engine is running, is hot, or indoors. Also, do
not smoke when working around inflammable fuel.
Wipe up spilled gasoline. C. Replace gasoline cap
securely. D. Open doors if engine is running in a
garage -exhaust gases are dangerous.
Keep machine in good operating condition and
keep safety devices in place. Use guards or shields
as instructed in Operator's Manual.
Reduce speed on slopes and in sharp turns to
prevent tipping or loss of control.
Stay alert for holes in terrain and other hidden
hazards.
Don't stop or start suddenly when going uphill ordownhill.
It is recommended that the machine be stopped
and inspected for damage after striking a foreign
object and that any damage be repaired before
restarting and operating the machine.
Always depress the brake pedal and set the brake
pedal lock before working on the machine. Dis-
engage all implements and shift the transmission
into neutral.
5
Your Cub Cadet Tractor has been safety engineered. Thoroughly
acquaint yourself with all the instruments and controls before
attempting to start or operate the tractor.
Instruments and controls on the International Cub Cadet 86, 108, and 128 Tractors.
1. Brake pedal lock 2. Choke control button. 3. Clutch-brake pedal 4. Creeper shift lever* 5. Front power take-off clutch lever. 6. Gearshiftlever 7. Lift handle cam stop 8. Lighting switch button* 9. Ignition switch """"""""" 10. Throttle 11. Electricliftcontrolswitch* 12. Charge indicator """""""'-:":'--""""
See page 12
See page 9
See pages 12 and 13
See page 13
See page 18
See page 13
See page 15
See page 21
See page 8
See page 18 and 19
See page 22
* Optional Equipment
6
Instruments and controls on the International Cub Cadet 129, 149, and 169 Tractors.
1. Brake pedal lock 2. Brake pedal. 3. Speed control lever 4. Choke control button 5. Front power take-off clutch lever 6. Charge indicator : 7. Hydraulic lift control handle 8. Throttle lever 9. Ignition switch. 10. Lighting switch button* (Standard on Models 149 and 169) 11. Lifthandlecamstop 12. Release lever. 13. Hour meter- (Standard on Model 169 only) Electrict lift* (Not shown.) Available on all but the
Model 149 and 169 Tractors.
* Optional Equipment
7
See page 14
See page 14
See page 14
See page 9
See page 18
See page 22
See page 20
See page 8
See page 21
See page 15
See page 15
See page 22
Lubrication
Lubricate the entire tractor. See pages 33 to 41
Tires.
Fuel System. Fill the fuel tank with gasoline. See pages 10 and 11.
Check the air pressure. See pages 24 to 26
1. Fuel tank filler cap
2. Fuel tank
3. Carburetor (not seen)
THROTTLE LEVER
This lever controls the speed of the engine. When
set in a given position, it will maintain a uniform
engine speed.
When using power take-off operated equipment,
best performance is achieved with the throttle lever
in the "FAST" position.
4.
Fuel line
5. Fuel shut-off valve
6. Air cleaner
Fuel System.
GOVERNOR
The governor is set at the time the engine is
assembled and should not require readjustment
unless the governor arm is removed or loosened
from the governor shaft. Consult your
I nternational Harvester dealer if the governor does
not function properly.
8
OPERATING THE ENGINE
LIFTING THE HOOD
The tractor hood is arranged to swing up and
forward to make the engine and fuel tank readily
accessible. To raise the hood take hold of the
spring latches on each side of the pedestal and lift
up and out to release the spring latches from the
hood crossmember.
Pull the choke control button all the way out.
More or less choking may be necessary due to
variations in temperature, grade of fuel, etc. Little
or no choking will be needed when the engine iswarm.
Place the throttle lever half-way between
"SLOW" and "FAST",
Place the throttle lever half-way between
"SLOW" and "FAST".
6. To start the engine the clutch-brake pedal must
be pressed all the way down and the power
take-off clutch handle must be in the disengaged
position to actuate the safety starting switches.
On the I nternational Cub Cadet 129, 149, and 169
Tractors the speed control lever will return to
neutral wher the clutch-brake pedal is pressed all
the way down.
International Cub Cadet 86, 108, and 128 Trac-
tors: Check to see that the gearshift lever is in the
neutral position.
STARTING THE ENGINE
Be sure there is an adequate supply of gasoline
in the fuel tank.
A CAUTION! Never remove the fuel tank
cap or fill the fuel tank when the engine
is running, is hot, or indoors. Also, do
not smoke when working around inflammable fuel.
Be sure the fuel shut-off valve is open.
All Models: Turn the ignition key clockwise to the
"ST ART" position and release it as soon as the
engine starts; however do not operate the motor
generator for more than 30 seconds at anyone
time. If the engine does not start within this time,
turn the key "OFF" and wait a few minutes, then
try again.
5. After the engine starts, slowly release the
clutch-brake pedal and gradually push the choke
control button all the way in. Do not use the
choke to enrich the fuel mixture, except when
necessary to start the engine.
STOPPING THE ENGINE
Move the throttle lever to the "SLOW" position
and allow the engine to idle for a short time before
stopping. Then turn the key to the "OFF"
position.
3.
4.
5.
1.
2.
9
FUEL SYSTEM
This engine is designed to operate on leaded
gasoline with a 93 minimum octane rating or on
unleaded or low lead gasoline with a 91 minimum
octane rating (Research Method).
use of unleaded gasoline will lengthen spark
plug and valve life, maintain engine performance
longer, and reduce rust and corrosion of engine
wh ile stored.
The fuel tank filler cap has an air vent. Keep the
vent open at all times to assure proper flow of thefuel.
A CAUTION! Never remove the fuel tank cap
or fill the fuel tank when the engine is
running, hot, or when near an open flame.
Do not smoke when working around inflammable
fuel, as the air around the tractor is mixed with a
highly explosive vapor. When pouring fuel, keep
the container or hose nozzle in contact with the
metal of the fuel tank to avoid the possibility of an
electric spark igniting the gas. Do not spill gasoline
on a hot engine.
International Cub Cadet 86 Tractor.
FUEL SHUT-OFF VALVE
Be sure the shut-off valve under the fuel tank isopen.
Screw out the needle stem (shut-off valve)
until the seat on the stem is tight against the stop
to prevent leakage or seepage when the valve is in
its full-open position.
CARBURETOR ADJUSTMENTS
The carburetor is adjusted at the factory and under
normal operation conditions it will not require
readjusting. However, if the engine does not
operate properly, it is recommended a new air
cleaner be installed before performing carburetor
adjustments. If this adjustment has been disturbed
for any reason, proceed as follows:
The
~
10
1. Governor control rod2.
Idle adjustment screw3.
Throttle stop screw4.
High speed adjustment screw5.
Fuel shut-off valve6.
Fuel line7.
Air cleaner
International Cub Cadet 108, 128, 129,
149, and 169 Tractors.
FUEL SYSTEM
CARBURETOR ADJUSTMENTS -Continued
A CAUTION! Be sure the brake pedal is in
the locked position, transmission is in
neutral, and the mower is disenga~d
before adjusting the carburetor.
Adjusting the High-Speed Adjustment Screw
Turn the high speed adjustment screw counterclockwise approximately two turns from the closed
position and start the engine.
Be sure the choke is fully open when adjusting.
After the engine has reached normal operating
temperature, place the throttle lever in the fast
position and turn the high speed adjustment screw
clockwise to the leanest mixture that will allow
sat i sf actory acceleration and steady governor
operation. Then, turn counterclockwise to the
richest mixture that allows satisfactory operation.
The difference between the rich and lean points is
about 1/2 turn. Set the mixture to the rich end of
this range.
If the engine shows a sooty exhaust and is sluggish
under load, the high speed mixture is too rich. The
high speed adjustment screw must be turned
clockwise 1/4 turn at a time until the condition is
corrected.
Adjusting the Idle Adjustment Screw
After the high speed adjustment screw is adjusted,
it may be necessary to readjust the idle adjustment
screw as each affects the other.
Close the idle adjustment screw to its seat by
turning it clockwise; then open it one turn. Start
the engine and operate it at fast idling speed
(without any load) until thoroughly warm.
While the engine is running at fast idle speed, it is
advisable to screw in the throttle stop screw a few
turns to keep the engine from stopping when the
throttle lever is moved to the fully retarded
"SLOW" position. The engine will then be idling at
a fairly high speed and the throttle stop screw can
be backed out a little at a time until the desired
idle speed is obtained.
If the engine misses and backfires under load, the
high speed mixture is too lean. The high speed
adjustment screw must be turned counter-clock-
wise 1/4 turn at a time until the condition is
corrected.
PREPARING THE TRACTOR FOR EACH DAY'S WORK
Check the crankcase oil level and add new oil if necessary. See pages 34 and 35.
Clean the air cleaner element if necessary. See page 21.
Inspect the tires for general condition. See page 26
If the engine misses or rolls while backing out the
throttle stop screw, the idle adjustment screw may
be adjusted in or out until the engine operates
smoothly. Speed up the engine for a few seconds;
then recheck the idle adjustment. A slight adjust-
ment in or out will give the smoothest idle.
11
Retighten the cap screws after the seat is adjusted.
NOTE: The battery is located in a well under the
operator's seat for ease in servicing or replacement
when necessary.
CLUTCH AND BRAKE PEDAL
Adjusting the seat.
Before starting the tractor, adjust the seat to the
most comfortable driving position. Tile the seat
forward over the steering wheel, loosen the four
cap screws in the seat support, and slide the seat
assembly forward or rearward to the position
wh ich is most comfortable for the operator.
Brake pedal lock in the engaged position.
LOCKING THE BRAKE
Always lock the brake when the tractor is parked
on a grade. To lock the brake, press down on the
pedal; then place the brake pedal lock in the
engaged position. To disengage the lock, press
down on the pedal, lift the lock up and place it in
the disengaged position.
12
International Cub Cadet 86, 108 and 128 Tractors
CLUTCH-BRAKE PEDAL
The combination clutch-brake pedal is used to
disengage the engine from the transmission when
shifting gears and to actuate the brake to stop the
tractor. The pedal must be pressed all the way
down to activate the safety starting switch when
starting the engine.
To disengage the clutch, and apply the brake, press
the pedal all the way down.
GEARSHIFT LEVER
lever is used to select various gear ratios
provided in the transmission. There are threeforward
speeds and one reverse speed. Refer to
"SPECIFICATIONS" on page 42.
STARTING THE TRACTOR
1, Advance the throttle lever slightly.
free the tractor by speeding up the engine and
suddenly engaging the clutch. Try backing out
instead of going forward.
STOPPING THE TRACTOR
Disengage the clutch by pressing the pedal all the
way down. Move the gearshift lever to the "N"
position. Before dismounting always lock the
pedal, disengage the power take-off, and turn the
ignition "OFF".
CREEPER SHIFT LEVER
The creeper drive (optional) provides a slower
speed in each respective gear, by a four-to-one
reduction in speed from direct drive. When the
creeper shift lever is all the way forward, it is in
direct drive, or all the way rearward, it is in creeperdrive.
Do not carry passengers or
give rides. Keep children, pets, and
bystanders a safe distance away.
Disengage the clutch by pressing the clutch
pedal all the way down, and release the brake lock.
Move the gearshift lever to the desired speed.
Start the tractor in motion by slowly releasing
the clutch pedal and moving the throttle lever to
the position where the engine operates best for the
load to be handled.
NOTE: When using power take-off operated
equipment, best performance is achieved with the
throttle lever in the "Fast" position.
NOTE: Do not shift gears while the engine clutch
is engaged or while the tractor is in motion.
NOTE: Do not rest your foot on the pedal while
driving the tractor, as this will result in excessive
clutch lining wear.
Always be sure the rear wheels are free to turn.
Under any adverse conditions, do not attempt to
OPERATING THE CREEPER DRIVE
To operate the tractor in creeper drive, depress the
pedal and move the creeper shift lever all the wayrearward.
Then select the transmission speed de-
sired and proceed as instructed under "Starting the
Tractor".
NOTE: Do not use a mid-point position on the
creeper drive as neutral. Neutral position must be
selected only with the standard transmission gear-
shift lever.
The following table shows the speeds available in
each of the three forward gears and the reversegear.
13
CAUTION!
This
2.
3.
International Cadet 86, 108 and 128 Tractors
OPERATING THE CREEPER DRIVE
DRIVING THE TRACTDR
SPEED TABLE
Miles Per Hour
Gear
Second
Reverse
International Cub Cadet 129, 149, and 169 Tractors
BRAKE PEDAL
The brake pedal must be pressed all the way down
to activate the safety starting switch. When the
brake pedal is in the depressed position it auto-
matically moves the speed control lever to the "N"
position.
Direct
Drive
2.3
3.5
Creeper
Drive
.6
1.0
6.8
.6
NOTE: On tractors with a rotary tiller the following instructions are required.
1. Engage the Power Take-Off clutch, and move
the throttle to "Fast".
The tractor can be stopped either by pressing the
pedal all the way down, or placing the speed
control lever in the "N" position.
SPEED CONTROL LEVER
This lever is used to select any speed from a
standstill "N" position to eight miles per hour in
the forward direction and to four miles per hour in
the reverse direction.
Moving the speed control lever forward provides
increased forward speed, and moving the lever
rearward provides the reverse speeds.
NOTE: Do not rest your foot on the brake pedal
while driving the tractor as this would cause the
speed control lever to return to the "N" position.
1.7
2.5
2.
3.
4.
Lower the rotary tiller to the desired cutting
depth.
Move the speed control lever to start forward
motion. NOTE: In rotary tilling application, the
tractor is used to hold the rotary tiller back rather
than to pull the unit as in plowing or mowing.
Move the speed control lever back to a position
to maintain proper mulching of the soil.
5. With a hydrostatic drive, it may be necessary to
vary the speed control lever as the soil conditionsvary.
With a gear driven tractor, under similar
conditions it may be necessary to declutch or to
use the brake.
14
DRIVING THE TRACTOR
International Cub Cadet 129, 149, and 169 Tractors
STARTING THE TRACTOR
1. Depress the brake pedal and release the brakelock.
Move the throttle lever to the position wherethe
engine operates best for the load to be handled.
2. Start the tractor in motion by moving the speed
control lever slowly forward or rearward as de-
scribed above.
RELEASE LEVER
To push or move the tractor for a short distance,the
release lever must be held in the (up) positionand
the speed control lever must be in the "N"
position.
CAUTION! Never operate engine with re-
lease lever in (up) position. Towing or
pushing the tractor for more than a few
feet may result in transmission damage.
STOPPING THE TRACTOR
Move the speed control lever to the "N" position
or use the brake. Before dismounting always lock
the brake pedal and turn the ignition "OF F", Also,
disengage the power take-off clutch lever.
Do not carry passengers or
give rides. Keep children, pets, and
bystanders a safe distance away.
The lift handle is used to lift or lower equipment
used with the tractor. The equipment can be set in
multiple positions by depressing the button on the
top of the handle and releasing it when the desired
position is reached.
HEIGHT ADJUSTMENT
If a single implement height is normally used, the
handle may be adjusted to locate the desired position by use of the cam stop.
With lift handle in desired implement height posi-
tion, release cam by turning locking knob counter-clockwise.
Turn cam until it contacts tang. Lock
cam into this position by turning knob clockwise.
15
CAUTION!
If free handle travel between cam stop and fully
raised position is desired (Float Position), depress
the release button on top of the handle, press in
the lock button located at the front of the handle
and release the top button.
NOTE: To disengage the lift handle from the float
position, pull lift handle back slightly and depress
top button.
NOTE: Refer to the equipment manual for proper
hitching instructions.
1. Lift lever
2. Draw bar
3. Three-point hitch
Orawbar and three-point hitch shown
on International Cub Cadet 86 Tractor.
DRAWBAR
Orawbar equipment must be hitched to the tractor
only at the hitch hole in the drawbar.
1. Release button2.
Lock button3.
Lift handle
4. Cam lock knob
5. Cam stop
6. Tang
THREE-POINT HITCH
When the tractor has a three-point hitch, equip-
ment adaptable to this hitch is raised and lowered
with the lift handle or power lift control. The lift
handle can be set to hold the equipment at various
positions by use of the notches in the lift handle
quadrant or cam stop. The lower mounting bracket
has three holes which are used for additional
adjustment.
Adjustable stop limiting handle travel.
A CAUTION! Disengage power to any
attachment when transporting or not in
use.
NOTE: Refer to the equipment manual for proper
hitching instructions.
16
International Cub Cadet 86, 108 and 128 Tractors
OPERATING THE REAR POWER TAKE-OFF
WITH THE TRACTOR STANDING STILL
1. Shifter lever
1. Power take-off guard
2. Grease fitting
If your tractor is equipped with a rear power
take-off, the following instructions should be
carefully studied and followed.
The rear power take-off is started and stopped by
the same engine clutch as the tractor. Be sure to
disengage the engine clutch before moving the
power take-off shifter lever.
A CAUTION! The shifter lever should always
be in the disengaged (rearward) position
when the power take-off is not in use.
Always cover the power take-off exposed shaft
with the guard when the power take-off is not
being used.
1. Move the throttle lever back to the "SLOW"
speed.
2. Depress the pedal and move the transmission
gearshift lever to the neutral position.
Move the shifter lever forward to the engaged
position.
4. Move the throttle lever forward to the "FAST"
position and slowly release the pedal.
OPERATING THE REAR POWER TAKE-OFF
WITH TRACTOR IN MOTION
Follow steps 1 thru 3 outlined above. Keep the
pedal depressed, move the transmission gearshift
lever to the speed desired and advance the throttle
lever. Slowly release the clutch pedal. This will
start the tractor in motion with the power take-off
in operation.
3.
17
OPERATING THE FRONT POWER TAKE-OFF
CLUTCH
t. Move the throttle lever back to the medium or
"slow" position.
2. Move the control lever forward slowly to the
engaged position.
Advance throttle to operating speed.
ADJUSTING THE POWER TAKE-OFF CLUTCH
1. Clutch lever bracket
2. Quick attachable cotter pin
3. Clutch lever rod
4. Clutch control handle
5. Turnbuckle
The clutch is factory adjusted and should not
require further adjustment under normal operating
conditions. However, if clutch slips or fails to
disengage, see your International Harvester dealer.
After considerable use, it may be necessary to
readjust the clutch to secure proper clutch engagement.
A CAU!'ON! Do not adjust with engine
running.
The electric lift is a self-contained unit designed to
provide power with fingertip control for raising the
lowering mounted equipment.
With the clutch fully engaged (clutch control
handle in the forward position) the clearance
between "A" and "B" should be minimal. When
disengaged, the plate "B" (with three legs) should
move a minimum of 1/10 inch to insure disengagement. To adjust for proper clearance, loosen the
jam nut on the clutch lever turnbuckle, and adjust
the turnbuckle. After obtaining the proper clearance tighten the jam nut securely against the
turnbuckle.
NOTE: Periodically lubricate the bushing in the
clutch lever bracket with a few drops of engine oil.
The electric lift is available on all Cub Cadet
Tractors except the Models 149 and 169 wh ich is
equipped with a hydraulic lift as standard.
3.
18
OPERATING INSTRUCTIONS
ELECTRIC LIFT
1. Locking knob2.
Cam stop3.
Rockshaft arm
1. Float lockout pin (optional)2.
Electric lift unit
3. Pivot pin
The electric lift is operated by a control switch on
the upper right-hand corner of the instrument
panel. To raise the implement push upward on
control switch until desired height is reached, then
release the switch. Switch will return to the center
or neutral position. Equipment will stay in a given
position when you release the switch. To lower
equipment push down on the control switch.
Switch will again return to the central or neutral
position when you release it.
NOTE: Always operate electric lift with tractor
engine running. Operation of electric lift off the
battery will cause premature battery failure.
NOTE: Whenever raising or lowering equipment
release control switch when equipment has reached
a fully raised or lower position. Holding control
switch will cause protective switch to open the
circuit. Lift will function after waiting 30 seconds.
Equipment is normally operated in a "Float"
position (implement free to move upward) with
lock pin (optional) positioned as shown. Cam stop
on the outside of the frame may be adjusted as
described on page 15 to allow implement to return
to a single preset hei~ht.
To operate equipment in a fixed "locked" position, where down pressure of implement is re-
quired (that is blade work); remove frame cover
and remove cotter pin in pivot. Reverse lock pin
(optional) and insert into pre-aligned holes in clevis
and lower portion of rockshaft arm. Replace
washer and cotter pin.
A CAUTION! Always stop the engine and
set the brake pedal in the locked posi-
tion before making any adjustments to
the machine.
NOTE: Remove or position cam stop on side of
frame for full travel of rockshaft before locking
rockshaft arms as described above.
NOTE: To avoid possible damage, as soon as the
operation requiring "Down Pressure" is completed,
immediately return the float lockout pin to the
"Free to Float" position.
Refer to equipment manual for proper mounting
instructions.
NOTE: Periodically lubricate pin "A" with a few
drops of engine oil.
19
1. Float lockout pin (optional)2.
Hydrostatic drive unit3.
Cotter pin
The hydraulic lift is ready to operate when the
engine is running.
OPERATING INSTRUCTIONS
The hydraulic control lever is spring loaded. To
raise the equipment move the lever back, toward
the tractor seat. To lower the equipment move the
lever forward, as shown.
Equipment is normally operated in a "Float"
position (implement free to move upward) with
the lock pin (optional) positioned as shown.
The cam stop may be adjusted as described on page
15 to allow the implement to return to a single
preset height.
To operate equipment in a fixed "locked" posi-
tion, where down pressure of the implement is
required (that is blade work), remove frame cover
and remove cotter pin in pivot pin. Reverse lock
pin (optional) and insert into pre-aligned holes in
clevis and lower portion of rockshaft arm. Replace
washer and cotter pin.
1. Hydraulic lift handle2.
Cam stop3.
Locking knob
NOTE: Remove or position cam stop on side of
frame for full travel of rockshaft before locking
rockshaft arm as previously described.
NOTE: To avoid possible dam~ge, as soon as the
operation requiring "Down Pre,,~ure" is completed,
immediately return the float lockout pin to the
"Free to Float" position.
Refer to equipment manual for proper mounting
instructions.
NOTE: Periodically lubricate pin "A" and bushing
"B" with a few drops of engine oil in both
locations.
20
ENGINE COOLING
This tractor has an air cooled engine. Air must be
able to circulate freely around the engine, through
the screen, shroud, and over the fins of the
cylinder head and cylinder block. Keep these areas
free of accumulated dirt and trash or engine will
overheat and result in damaged moving parts.
Periodic cleaning with compressed air will keep
area clear for adequate cooling.
DRY TYPE AIR CLEANER
Removing the air cleaner filter element.
Incoming air for combustion is filtered by a
dry-type air cleaner having a filter element inside
of the cover.
Clean or replace the element when loss of power is
noticeable. Replace at least once a year.
Cleaning the Element -To clean the element,
remove wing nut, air cleaner cover, then remove
element and tap it lightly on a flat surface to cause
loose dirt to falloff. Handle paper element with
care to avoid dents or crushing local areas. Do not
use compressed air to remove dirt as this can
repture the element. Do not wash or use a solvent.
Replacing the Element -Replace element with a
new one if dirt does not drop off easily, or if it is
bent or damaged. When replacing element be sure
the back plate is securely tightened to the carburetor. Replace the back plate if bent or cracked,
then be sure the element fits snugly around the
inside edge of the air cleaner base. The gasket
surfaces of the element must be flat against the
back plate and cover to seal effectively. Replace
cover and tighten wing nut finger tight.
The twelve-volt electrical system consists princi-
pally of a motor-generator, voltage regulator, and a
twelve-volt battery.
All connections must be clean and securely
fastened.
IGNITION SWITCH
Turn the key clockwise to turn on the ignition. A
further turn actuates the motor-generator. The key
cannot be removed when in the "ON" position.
21
NOTE: When the engine is not operating, the key
must be turned to the "OFF" position to prevent
battery discharge.
SAFETY STARTING SWITCH
The safety starting switches activated by the
clutch-brake pedal and the power take-off clutch
lever serve to prevent starting the engine acci-
dentally.
ELECTRICAL SYSTEM
CHARGE INDICATOR
This instrument indicates whether the motor-
generator is charging or the battery is discharging.
If it shows discharge continuously, investigate the
cause to avoid completely discharging the battery
and possible damage to the motor-generator.
HOUR METER
The International Cub Cadet 169 is equipped with
an hour meter, which is located on the left side of
the tractor parallel to the air cleaner. It indicates
the actual hours of engine operation, enabling the
operator to determine without guesswork, when
lubrication, change of oil, or periodic inspections
are necessary. It also provides a means of computing cost of specific jobs. The hour meter
operates whenever the engine is running.
SPARK PLUG
Be sure the gasket is in good condition. Tighten the
plug 1/2 to 3/4 turns past tiger tight.
Replace a defective plug with a new plug. See your
I nternational Harvester dealer for the correct
replacement plug.
MOTOR GENERATOR
The motor-generator (12-volt negative ground) will
function as a cranking motor when the ignition key
is turned to the "START" position, driving the
engine by means of a belt.
When the engine is operating, the unit will function
as a generator.
MOTOR-GENERATOR BELT
Check the tension of the motor-generator belt after
the first 10 hours of operation and every 50 hours
of operation thereafter. The tension is correct
when the belt can be deflected a maximum of
1/4-inch by a ten pound force applied midway
between the two pulleys.
Checking the spark plug gap.
Set gap at .O25-inch.
NOTE: Remove all dirt from around the spark plug
before removing.
Remove the spark plug, always using a spark plug
wrench, after every 100 hours of operation to
check the gap.
A CAUTION! Be sure engine is off and
cool. before making any adjustments or
repairs. 22
A CAUTION! Check the belt with engine
off.
Also follow this procedure when a new belt is
installed.
ELECTRICAL SYSTEM
MOTOR-GENERATOR BELT -Continued
Adjusting the Motor-Generator Belt
Loosen the motor-generator brace bolt and mount-
ing bolts.
Move the generator away from the engine until the
tension on the belt is correct.
NOTE: Under no circumstances should a pry bar
be used on the motor-generator to obtain belt
tension as damage to the bearings will result.
Tighten mounting bolts and brace bolt.
Removing and Replacing the Motor-Generator Belt
VOLTAGE REGULATOR
A satisfactory generator charging rate is maintained
by the voltage regulator. If the regulator fails to
operate correctly, see your I nternational Harvesterdealer.
NOTE: Never place a jumper lead between, or
accidentally bridge, the "BAT" terminal and the
"F" terminal on the regulator, as this will damage
the regu lator.
LIGHTS
Lights are optional on all models except the
Models 149 and 169.
The headlights are sealed-beam units. Refer to
"SPECIFICATIONS" when replacement is neces-
sary.
To replace the taillight lamp, remove the lens from
the taillight and r~place. Refer to "SPECIFICA-TIONS",
1. Mounting bolts2.
Motor generator brace bolt3.
Motor generator belt
Replace the motor-generator belt when it becomes
badly worn. To remove the old belt, loosen the
motor-generator brace bolt and mounting bolts.
Move the generator in toward the engine and slip
the old belt off the pulleys and over the crankshaft. I nstall the new belt in the reverse order of
removal and adjust the belt to the proper tension.
NOTE: If tractor is equil
drive belt must also be
generator belt.
with rotary mower I
removed when replacing
FUSE (Electric Lighting)
Always use the same capacity fuse for replacement.
Refer to "Specifications". If the lights fail, check
the fuse.
The fuse is located in a fuse housing in the line at
the back of the instrument panel.
To install a new fuse, press in on the fuse housing
cap and turn counterclockwise to remove it from
the fuse housing. Remove the old fuse and replace
it with a new one. Then reassemble the cap to the
housing. Remove the fuel tank if necessary to
reach the fuse.
Before working on any part of the electrical
system, disconnect the battery ground cable at the
battery negative (-) terminal. Do not reconnect
this cable until all work has been completed. This
will prevent shorting and damage to any of the
electrical units. Examine the electrical cables occa-
sionally to be sure they are not being frayed by
contact with adjacent parts.
pped
23
ELECTRICAL SYSTEM
When replacing a battery, make certain the ground
cable is connected to the negative (-) terminal on
the battery. Be sure the rubber boot is properly
positioned over the positive (+) terminal on the
battery. NOTE: Both cables must be assembled
with the nuts to the inside of the terminals to
prevent shorting against fender well.
Cleaning and Servicing the Battery
Occasionally remove the battery cables and
brighten the terminal contact surfaces with wire
wool, and reassemble them. Apply a light coat of
vaseline or chassis lubricant. Be sure the terminals
are clamped tightly and that the battery is fastened
securely in the battery box. Replace unserviceable
cable. Keep the vent holes in the battery filler caps
open.
Keeping the battery fully charged not only adds to
its life but makes it available for instant use when
needed.
CAUTION! If the rider is to be tipped
up or on its side remove the batteries to
avoid spilling the electrolyte. Battery
electrolyte is poisonous and can be injurious to
eyes, skin, and clothing. If electrolyte is spilled,
flush immediately with a solution of one part
baking soda to four parts water.
Connecting Booster Batteries
When required, a booster 12-volt battery may be
connected in parallel with the 12-volt system on
International Cub Cadet Tractors.
CAUTION I Gas discharged by batteries isexplosive.
Avoid sparks near the batteries.
NOTE: All circuits must be turned "off". Electri-
cal system is NEGATIVE (-) grounded only.
Reversed polarity will result in permanent damage
to components of the electrical system.
Liquid Level
Check the battery at least once a month for water
level.
The electrolyte (acid and water) in each cell should
be at ring level at all times to prevent battery
failure. When the electrolyte is below this level,
add pure, distilled water.
Acid or electrolyte should never be added except
by a skilled battery man. Under no circumstances
add any special battery "dopes", solutions or
powders.
REAR TIRES
6-12 rear tires are standard equipment on the
International Cub Cadet 86 and 108 Tractors.
23 x 8.50-12 high floatation tires are standard
equ ipment on the I nternational Cub Cadet 128,
129, and 149 Tractors. They are also available as
optional equipment when ordered for the
International Cub Cadet 86 and 108 Tractors.
The first jumper cable must connect the positive
(+) terminal of the booster battery and the positive
terminal of the battery on the tractor.
The second jumper cable must first be connected
to the negative (-) terminal of the booster battery;
and then to a point on the frame of the tractor,
away from the battery, having a good ground, so
no spark occurs near the battery.
For dependable battery service,
I nternational Harvester dealer.
23 x 10.5-12 tires are standard on the International
Cub Cadet 169 Tractor.
The high floatation tires provide maximum mobil-
ity in sand, snow, and soft soil conditions. The
reduced ground pressure and low inflation provides
maximum protection for turf, soil and crops.
see
your
24
PNEUMATIC TIRES
CARE OF TIRES
Avoid stumps, stones, deep ruts, curbs, and other
hazards. Cuts in tires should be repaired immediately as neglect decreases the tire life.
Keep tires free from oil and grease as both destroyrubber.
After using the tractor for spraying use water to
remove any chemicals that may be on the tires.
INFLATION
Keep the pneumatic tires properly inflated. Overinflation will cause operator discomfort. Underinflation will cause short tire life.
Always see that the tire valve caps are in place and
tightened securely to prevent loss of air and
protect the valve core and stem.
MOUNTING TIRES ON THE RIM
After mounting a new or old tire on the rim,
inflate it to 20 pounds pressure to seat the tire
bead on the rim flange. Then deflate the tire to the
correct operating pressure.
REAR WHEEL WEIGHTS
Rear wheel weights increase traction and reduce
w:'eel slippage. The weights weight approximately
26 pounds each.,They are attached to each rear
wheel with two bolts, lock washers, and hex. nuts.
If additional weight is desired, a second set of
weights can be attached to each first weight by
using two longer bolts.
OPERATING PRESSURE FOR TIRES
I nflate the front and rear tires for normal or heavyload
operations as shown in the following table.
Normal Heavy
Size
Front Tires4.80/4.00-8
Load Load
Pounds per square inch
12 12
16 x 6.50-8
Rear Tires 6-12
23 x 8.50-12
23 x 10.50-12
12 12
12 12
12 12
12 12
25
TIRE CHAINS
Tire chains will provide additional traction for wet
ground conditions, when plowing snow, or pulling
heavy loads. Rear wheel weights are recommended
when using chains.
OVERLOADING
Do not overload the tractor tires by mounting
equipment on the tractor which exceed the load
capacity of the size of the tires on the tractor.
Tire
FRONT QUICK ATTACHING LATCH
This latch is used for front and center mounted
equipment. Refer to the equipment manual for
proper instructions.
FRONT WHEEL TOE-IN
Tie rod and drag link ball joints.
1. Front quick attaching latch
Front wheel adjustments.
1. Wheel hub
Front wheel adjustments.
The front wheel toe-in dimension is approximately
1/8-inch closer in front than in the rear. To
measure for proper toe-in, make a chalk mark on
the centerline of each tire the same height from the
ground as the front wheel hubs. Measure the
distance between the marks "A", then rotate the
tires so that the marks are toward the rear of the
tractor, the same height from the ground as they
were in front. The dimension should be approxi-
mately 1 18-inch larger at the rear. See "B."
To adjust the toe-in remove one ball joint, loosen
the lock nut "c" at the ball joint and turn the tie
rod ball joint in or out as required.
TURNING RADIUS
The front wheel should have an equal angle for left
and right turns. If adjustment is necessary, remove
ball joint and loosen lock nut "0", turn the drag
link ball joint clockwise or counterclockwise as
required.
A CAUTION! Be sure all parts are re-
assembled tight with cotter pins in place
and spread.
26
International Cub Cadet 86, 108 and 128 Tractors
ADJUSTING THE CLUTCH
It is impoftant that a clearance of .O50-inch be
maintained between the clutch release lever and
the clutch release bearing. In order to maintain this
clearance, the pedal should have a free movement
of approximately 9/32-inch. This measurement is
taken at the point of contact of the pedal arm with
the front edge of the pedal return stop.
The clutch pedal adjustments are set at the factory
and should not require frequent attention unless
the linkage has been disturbed or when the pedal
movement becomes less than 9/32-inch. When it is
necessary to adjust the clutch, turn the adjusting
nut (No.3 on page 29) on the clutch release rod in
or out as required to get the proper measurements.
THE BRAKES
Adjust to 100 ft. Ibs. per wheel as shown in illus-
tration. If necessary tools are not available, adjust
as follows:
The disc brakes should start to engage when the
pedal is pressed down to a position where the
engine clutch starts to release.
Push the pedal down until the clutch just begins to
release. This can be checked by shifting the
transmission into third gear and rocking the tractor
back and forth. If the drive shaft turns free and
does not turn the engine, the clutch is disengaged.
Locate the pedal at this point with a "c" clamp
and adjust the jam nuts on both brake rods until
the brakes just begin to clamp the brake discs and
create some drag. Make sure the brakes completely
release when the pedal is up against the stop, and
then tighten the jam nuts.
The tractor transmission should shift easily when
the tractor is stopped and the clutch-brake pedal is
depressed.
NOTE: To check the equal ization of the brakes,
drive the tractor in third gear on a concrete or
blacktop surface. When making a sudden stop,
both wheels should start to slide simultaneously. If
one wheel stops before the other, make the proper
adjustment to obtain uniform braking of both
wheels.
ADJUSTING
27
CLUTCH-BRAKE
ADJUSTING THE BRAKES -Continued
To adjust the brakes block the front wheels securely and raise the tractor so the rear wheels are
off the ground.
A CAUTION! Be careful and take neces-
sary precautions when raising tractor off
the ground.
With the rear wheels off the ground and the brake
pedal in the locked position, the brake settings
should be equalized as follows:
Disconnect the left brake rod at the pinned end,
rotate the right wheel by hand and adjust the jam
nuts on the brake rod until wheel brakes firmly.
Then, disconnect the right brake rod at the pinned
end and reconnect the left brake rod. Turn the left
wheel by hand and adjust the jam nuts until the
wheel brakes firmly. Reconnect the right rod.
NOTE: To check the equalization of the brakes
start the engine and shift the gears to third speed.
After the wheels are turning apply the brakes. Both
wheels should stop at the same time. If one wheel
stops and the other wheel continues to revolve
when the brakes are applied, stop the engine,
adjust the jam nuts on the brake rod of the wheel
that does not stop, enough so that both wheels
stop simultaneously.
1. Clutch release lever
2. Clutch release rod3.
Adjusting nut4.
Brake rods
5. Safety starting switch
28
Speed control handle
centering zone when
brake pedal is used
"N" position.
Transmission is in
neutral
Braking zone.
Brake must be
engaging ~
With pedal lock in position as
shown brakes must withstand a
torque of 100 ft.lbs. per wheel ,..
~J FF :'~=~~::::.:;~-.:r:/ " "
Wear zone Pedal stop -I ! '-.L.-.4..
MA.5151
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International Cub Cadet 129, 149 and 169 Tractors
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Brake adjustments.
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ADJUSTING THE BRAKES
The disc brakes should engage when the pedal is
pressed down to within a maximum of 1-3/16inches and a minimum of 3/4-inch above the pedal
stop.
The brake is engaged when the pedal arm is at least
3/4-inch above the pedal stop.
To adjust the brakes block the front wheels
securely and raise the tractor so the rear wheels are
off the ground.
NOTE: The brakes must not engage before the
pedal is within the maximum distance of 1-3/16-
inches.
With the rear wheels off the ground and the brake
pedal in the locked position, the brake settings
should be equalized as follows:
Disconnect left brake rod at the pinned end, rotate
the right wheel by hand and adjust the jam nuts on
the brake rod until the wheel brakes firmly. Then,
disconnect the right brake rod at the pinned end
and reconnect the left brake rod. Turn the left
wheel by hand and adjust the jam nuts until the
wheel brakes firmly. Reconnect the right rod.
29
When your tractor is not to be used for some time,
it should be stored in a dry and protected place.
Leaving your tractor out-doors, exposed to the
elements materially shortens its life.
Follow the procedure outlines below when storing
a tractor for an extended period of time.
1. Wash or clean and completely lubricate the
tractor. See the "lubrication Guide".
2. Store the tractor so the tires are p':.Jtected from
light. Before storing the tractor, clean the tires
thoroughly. Jack up the tractor so the load is off
the tires when it is to be out of service for a long
period. If not jacked up, inflate the tires at regular
intervals.
6. Clean the exterior of the engine.
7. Remove the battery and place it in a cool, dry
place above (+32°F.). Check battery at least once a
month for water level and amount of charge. See
pages 24 and 25.
On all gear driven International Cub Cadet
Tractors press clutch and brake pedal all the way
down and engage the brake pedal lock. This will
prevent clutch lining from sticking to pressure
plate.
Disengage P.T.G. clutch.
REMOVING FROM STORAGE
CAUTION! If tractor is jacked up or
placed on blocks, be sure it is done so it
cannot be tipped over or fall on
someone.
3. Run the engine long enough to thoroughly
warm the oil in the crankcase and then drain the
oil. Refill the crankcase with fresh oil as specified
in the "lubrication Table" and run the engine for
about five minutes.
Drain the fuel tank and run the engine until the
fuel is exhausted from the fuel system.
NOTE: Gum will eventually form in the fuel tank,
line, and carburetor if the unit is not drained.
5. After the engine has cooled, remove the spark
plug and pour two tablespoonsful of a rust
inhibited oil such as Hy- Tran@ or IH No. 1@
engine oil into the cylinder. Crank engine slowly
turning generator belt by hand to distribute the oil
over the cylinder walls. Then replace spark plug.
1. Fill the fuel tank and be sure the grade of oil in
the crankcase is according to the temperature range
in the "lubrication Table".
2. Install a fully charged battery and properly
connect.
3. Start the engine and let it run slowly. Do not
accelerate it rapidly or operate at high speed
immediately after starting.
A CAUTION J Keep doors wide open or re-
lease brake pedal lock and move the
machine outside the storage room before
engine is started to avoid the danger from exhaust
gas.
Check air pressure in tires.
8.
9.
4.
4.
30
When you purchased your tractor, you probably
had it completely equipped for your particular
needs at the time. However, later you may wish to
obtain some of the equipment or accessories shownbelow.
These items and other allied equipment can
be purchased from, and installed by, your
The tractor is used for so many different types of
work, and because it is called on to operate under
so many different conditions, a variety of equip-
ment is available to adapt it to the requirements of
the user.
I nternational Harvester dealer.
Possible Cause
No gasoline in fuel tank or carburetor.
Fuel line or carburetor clogged.
in gasoline.
Choked improperly. Flooded engine. Defective ignition or loose wiring. Defective battery Spark plug dirty or improper gap.
Water
31
Possible Remedy
HARD TO START
Fill the tank with gasoline; open the fuel shut-off
valve. Check the fuel line, and carburetor.
Clean the fuel line and carburetor with acetone or
50-50 mixture of alcohol and benzol.
Drain the fuel tank and carburetor. Use new fuel
and dry the spark plug.
Follow the starting instructions.
Check the wiring, spark plug, or breaker.
Check and service; See page 24, or replace.
Clean, adjust the gap to .025 inch, or replace the
plug.
* See your I nternational Harvester dealer.
TROUBLE SHOOTING
Possible Cause
ENGINE OPERATES IRREGULARLY OR KNOCKS
Engine incorrectly timed Spark plug dirty; wrong gap or wrong type. Poor or weak spark.
Carburetor setting incorrect. Poor grade fuel or water in fuel. Engine overheating ".'..'.'.'..' Engine valves at fault Enginesmokes
Otherengineproblems
Air cleaner clogged.
Engine overheated. Engine overloaded.
Poor fuel, too rich, or too lean a mixture. Fuel tank air vent clogged """"."..'.."
Air leakage between carburetor and engine.
Incorrect timing or faulty ignition. Clutch slipping (Models 86, 108, and 128) Brake drags
Possible Remedy
*
Clean, reset the gap to .025 inch, or replace.
Check the breaker points and breaker point open-
ing, spark plug, and wiring.*
Adjust; see "Carburetor" on pages 10 and 11.
Drain and use a good grade of clean fuel.
See "Engine Cooling" See page 21.
*
Adjust the carburetor. Check for worn piston and
rings.*
LACK OF POWER
Clean or replace the air cleaner element. See page
21.
Reduce the load.
Run the engine until it warms up before putting it
under load. See "Engine Overheats" below.*
See "Carburetor" on pages 10 and 11.
Open the vent in the cap.
Clean the air cleaner as instructed on page 21.
Tighten the carburetor and manifold mounting
nuts.
See "Spark Plug" on page 22.
Adjust the free travel of the pedal; see page 28.
Adjust the brake; see pages 29 or 30.
ENGINE OVERHEATS
Insufficient cool air, dirty air intake screen,
shroud, or cooling fins.
Speed control out of adjustment (Models
129, 149, and 169)
* See your International Harvester dealer.
Keep the air intake area and cooling fins clean; see
"Engine Cooling and Air Cleaner" on page 21.
CREEPING
Refer to Service Manual.*
32
ENGINE OIL
The engine crankcase is filled with ship-away oil.
This oil may be used for the first 30 hours of
engine operation at temperatures between +90
degrees F. and 0 degrees F. If temperatures are not
within this range, drain the oil from the crankcase
and replace with new oil as specified in the
"lubrication Table". The engine oil must be
drained and replaced with new oil every 30 hours
of engine operation.
We recommend I.H. No. 1@ Engine Oil. If other
than I.H. No. 1@ Engine Oil is used, it must be
designated "For Service MS". In new API Code
these oils are usually designated as meeting either
SO or SE requirements.
Lubricate the entire tractor, using only high
quality lubricating oils and greases as specified in
the "Lubrication Table". For your own protection,
select only oils and greases of recognized manufac-
ture.
Regularly check the oil levels of the engine
crankcase and transmission to see that they are
filled to the correct levels. NOTE" Check the oil
level only while the engine is stopped.
NOTE: On the Cub Cadet 86 Tractor the oil filler
cap has the oil level gauge attached and is located
on the right side of the tractor.
NOTE: On all other models the oil filler cap and
gauge is located on the gear cover on the left side
of the tractor.
To aid starting, the selection of crankcase lubricating oils should be based on the lowest anticipated
temperature until the next drain period. See page36.
Always keep the oil level between the "FULL" and
the "LOW" marks on the gauge. When checkingthe
oil level the gauge must be withdrawn and
wiped clean, then inserted all the way and with-
drawn for a true reading.
33
ENGINE OIL -Continued
lUBRICATION
Keep your supply of lubricating oil absolutely
clean and free from dust. Always use clean
containers. Keep the lubricator clean and wipe dirt
from the lubrication fittings before applying the
lubricator.
TRANSMISSION OIL FILTER
(International Cub Cadet 129, 149, and
169 Tractors)
Remove the throw-away can-type filter and replace
with a new filter after the first 10 hours and after
50 hours of operation, and every 100 hours of
operation thereafter.
1. Oil filler cap and oil level
gauge -Cub Cadet 86 Tractor
1. Oil filler cap and oil level
gauge -All models except the
Cub Cadet 86 Tractor
NOTE: Clean the outside area before removing the
filter to keep dirt from getting into the transmission case. If a mower is mounted on the tractor,
the mower must be lowered to facilitate removal of
the filter.
To remove the filter, turn the filter counterclockwise using an automotive type filter wrench
or an open end wrench.
Before installing the new filter I apply a coating of
oil on the filter gasket. Thread the filter on by
hand until tight enough to seat the gasket. Loosen
the filter. Then turn it until the gasket contacts the
base. Tighten the filter an additional one half turn.
Check for leaks and check oil level of transmission
case.
34
Point of Lubrication
Check
at
Hours
Change
at
Hours
Capacity
Anticipated Air Temperature
Above +32°F.
to O"F.
Below QoF.
Engine Crankcase
Model 86 Tractor
Engine Crankcase
Models 108, 128,
129, 149, and
169 Tractors
Transmission
Models 129,149,
and 169 Tractors
Transmission
Models 86, 108,
and 128 Tractors
Creeper drive hous-
ing Models 86, 108
and 128 Tractors
Steering gear hous-
ing All models
Steering knuckles
All models
10
10
100
100
100
Yearly
10
30
30 3 pt.
Add as
needed
Add as
needed
Add as
needed
2-1/2 pt.
I.H. No. 1cB> Engine
Oil SAE-30
Note: Do not sub-
stitute 10W-30 or
10W-40
I.H. No. 1@
Engine Oil
SAE-10W
I.H. No. 1(8) Engine Oil
SAE-5W-20
or
SAE-5W Engine
Oil
14 pt. IH Hy-Tran@ Fluid
If fluid is used which does not meet requirements of
I H 8-6 Specification, International Harvester
7 pt.
Approx.
1/2 pt.
1/4 lb.
Use IH-251 IH EP grease or equivalent #2 multi-purpose
lithium grease and apply two or three strokes of the lubricator
or sufficient grease to flush out old grease and dirt.
Company will not be responsible for substandard
performance of transmission and hydraulic components. NOTE: Failures due to use of improper
fluid or filters are not covered by warranty.-FOR
MAXIMUM PROTECTION USE IH HY- TRAN@
FLUID AND FILTERS.
Two strokes of the lubricator using I H-251 H EP
grease or equivalent #2 multi-purpose lithium
grease.
+3~F.
35
LUBRICATION GUIDE
International Cub Cadet 86, 108 and 128 Tractors
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36
LUBRICATION GUIOE
International Cub Cadets 86, 108 and 128 Tractors
-After Every 10 Hours of Operation
1 -Oil filler cap and bayonet-type oil
level gauge. Cub Cadet 86.
1A -Oil filler cap and bayonet-type oil
level gauge for Cub Cadet 108
and 128.
2 -Steering knuckles (2),
3 -Front axle pivot pin.
4 -Engine crankcase.
5 -Power take-off shafting bearing.
Check the oil (with the engine stopped) and add sufficient
new oil to bring it to the "FU LL" mark on the gauge. Do
not overfill. Do not operate the engine if the oil level is
below the "LOW" mark on the gauge.
Use IH 251H EP grease or equivalent #2 multi-purpose
lithium grease and apply sufficient grease to flush out old
grease and dirt.
-After Every 30 Hours of Operation
While the oil is warm, remove the drain plug (4) and drain
all of the oil from the crankcase. Replace the drain plug.
Refill the crankcase with new oil up to the "FULL"
mark on the oil level gauge. Refer to the "Lubrication
Table" for the proper quantity and viscosity to use.
-After Every 150 Hours of Operation
Use IH 251H EP grease or equivalent #2 multi-purpose
lithium grease and apply two or three strokes of the
lubricator to the lubrication fittings.
37
LUBRICATION GUIDE
International Cub Cadet 86, 108 and 128 Tractors
-Periodic
Transmission
6 -Oil level and filler plug.
7 -Oil drain plug.
Creeper drive housing
8 -Level plug.
9 -Breather and filler plug.
10 -Drain plug.
11 -Steering gear housing.
Miscellaneous
Check the oil level periodically. Keep the lubricant up the
the level plug (6) on the rear of the transmission case.
Check the oil level periodically. Keep the lubricant up to
the level plug (8) on the left side of the creeper drivehousing.
Once a year, apply two strokes of the lubricator, using I H251
H EP grease or equivalent #2 multi-purpose lithium
grease.
NOTE: To locate the lubrication fitting, remove bottom
shield and turn the front wheets to the maximum right turn
position. Then reach up under the right side of the tractor
frame to locate the fitting.
Lubricate the clutch pedal shaft and linkage with eight or
ten drops of engine oil.
38
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39
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LUBRICATION
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Cub Cadet 129, 149, and 169 T
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International Cub Cadet 108, 149, and 169 Tractors
1. Oil filler cap and bayonet-type oil
level gauge.
LUBRICATION GUIDE
-After Every 10 Hours of Operation
Check the oil (with the engine stopped) and add sufficient
new oil to bring it to the "FU LL" mark on the gaugE:. Do
not overfill. Do not operate the engine if the oil level is
below the "LOW" mark on the gauge.
Steering knuckes (2).3.
Front axle pivot pin.
Transmission oil filter.
Engine crankcase.
Transmission oil filter.
Use IH 251 H EP grease or equivalent #2 multi-purpose
lithium grease and apply sufficient grease to flush out old
grease and dirt.
NOTE: After the first 10 hours only, remove the old filter
and replace with a new filter as instructed on page 35.
Change the oil filter after 50 hours and every 100 hours of
operation thereafter.
-After Every 30 Hours of Operation
While the oil is warm, remove the drain plug (5) and drain
all of the oil from the crankcase. Replace the drain plug.
Remove the crankcase oil filler cap (1). Refill the
crankcase with new oil up to the "FULL" mark on the oil
level gauge. Refer to the "Lubrication Table" for the
proper quantity and viscosity to use.
-After Every 50 Hours of Operation
NOTE: After the first 50 hours only, remove the old filter
and replace with a new filter as instructed on page 35.
Change the oil filter every 100 hours of operation
thereafter.
7. Transmission oil filter.
Transmission
Oil level and filler plug
2.
4.
5.
6.
8.
-After Every 100 Hours of Operation
Change the oil filter and replace with a new filter as
instructed on page 35.
-Periodic
Check the oil level periodically. Keep the lubricant up to
the level plug (8) on the rear of the transmission casecover.
40
Steering gear housing.
LUBRICATION GUIDE
International Cub Cadet 129, 149, and 169 Tractors
-Periodic
Once a year, apply two strokes of the lubricator, using I H
251 H EP grease or equivalent #2 multi-purpose lithium
grease.
NOTE: To locate the lubrication fitting, turn the front
wheels to the maximum right turn position. Then reach up
under the right side of the tractor frame to locate the
fitting.
Speed Control Linkage
10. Speed control rod.
11. Cam plates
Miscellaneous
REAR POWER TAKE-OFF
Once a year, apply a few drops of oil (six or eight) around
the base of the control rod. When applying the lubricant
move the control rod from one extreme to the other for
more even distribution.
Once a year, apply a light amount of I H 251 H EP grease or
equivalent #2 multi-purpose lithium grease.
Lubricate the brake pedal shaft and linkage with eight or
ten drops of engine oil.
If the tractor is equipped with a Three-Point Hitch, once a
year the Lift Bar at the implement rockshaft should be
lubricated. Apply several strokes of I H 251 H EP grease or
equivalent #2 multi-purpose lithium grease.
The power take-off shaft connection is a 15/16-
inch pitch diameter, ten-tooth involute spline with
a 30 degree pressure angle, machined for outside
diameter fit. The dimensions are shown.
Rear Power take-off shaft spline dimensions
(International Cub Cadet 86, 108, and
128 Tractors).
9.
41
Power take-off shaft governed
speed 515r.p.m.
Direction of rotation (looking at rear
of tractor) counterclockwise
Center line of power take-off shaft
above rear axle center of 3-1 /4-in.
End of power take-off shaft to rear
of rear axle center line. 7-7/16-in.
SPECIFICATIONS
Model 86
Model 108 Model 128 Model 129 Model 149 Model 169
ENGINE -Continued
Ignition (electric
starting) Battery Battery Battery Battery Battery Battery
Spark plug gap
(14mm plug)
(Champion J-8 or
equivalent) 025 in. gap (Champion H-10 or
equivalent) 025 in. gap .025 in. gap .025 in. gap .025 in. gap .025 in. gap
Breaker points. 020 in. gap .020 in. gap .020 in. gap .020 in. gap .020 in. gap .020 in. gap
Timing. 20 degrees 20 degrees 20 degrees 20 degrees 20 degrees 20 degrees
before TOC before TOC before TOC before TOC before TOC before TOC
ELECTRICAL SYSTEM
System voltage.
12 volt neg. 12 volt neg. 12 volt neg. 12 volt neg. 12 volt neg. 12 volt neg.
ground ground ground ground ground ground
Battery Motor generator,
Delco- Remy Voltage regulator,
Delco- Remy Fuse (cartridge type) ..
9943X 9948X 9948X 9948X 9948X 9948X
15 amp.
2 unit
AGC-10
amp.
15 amp.
2 unit
AGC-10
amp.
15 amp.
2 unit
AGC-10
amp.
15 amp.
2 unit
AGC-10
amp.
15 amp.
2 unit
AGC-10
amp.
15 amp.
2 unit
AGC-10
amp.
Headlights -all glass, sealed beam units. Tailligh1
Lamp No. IH Part No.
4411
67
43
373662 R91
142 450
MOWERS
(38, 44, and 50-inch, 3 spindle)
with wide-oval runners
and
Quick-attachable mounting
45
Your new rotary mower is designed to meet
today's exacting operating requirements. The ease
of operation and ability to adjust to field
conditions lighten your work and shorten your
hours on the job.
Be sure to read the instructions for Adjusting and
Operating in this manual. Check each item referred
to and acquaint yourself with the adjustments
required to obtain efficient operation and maxi-
mum trouble-free performance. Remember, a
machine which is properly lubricated and adjusted
saves time, labor, and fuel.
Your are urged to consult your International
Harvester dealer concerning unusual field condi-
tions or special applications. Let the experience of
your dealer and the organization associated with
him serve you.
After the operating season, thoroughly clean your
mower and inspect it. Preventive maintenance pays
dividends. Your dealer has original-equipment parts
which assure proper fit and best performance. He is
able to recondition your equipment to a like new
condition.
46
The 3 spindle, center mounted, 38-, 44-, and 50-
inch rotary mowers are designed for use on
International Cub Cadet Tractors having serial
number 400,001 and higher, and are quick detachable by the use of two spring loaded handles and
two bayonet type hangers.
The mower extends beyond the tractor wheels to
permit cutting close to shrubbery, trees, fences,
buildings, drive and walkway edges, etc.
The mower is driven by a V-belt from the engine
mounted power take-off clutch. The clutch is
engaged and disengaged by means of a hand lever
mounted on the cowl pedestal.
A heavy-duty V-belt connects the three spindles
and permits independent turning of the blades
when an obstruction is struck by a blade. A springloaded belt tightener maintains proper belt tension.
Keep the machine in good operating condition and
keep safety devices in place. Use guards or shields
as instructed.
The blade spindle bearings are automotive type
double row ball bearings that can be relubricated
and are carefully enclosed and protected by seals.
The three cutting blades are designed to create a
suction to lift the grass and hold it for an even cut.
Raising and lowering of the mower is done by
means of the tractor lift handle or the power lift.
The lift linkage provides and maintains a true parallel lift for the mower. The cutting height ranges
from approximately 1 to 4-inches, depending on
tire and mower combinations.
Gauge wheels permit setting the cutting height to
allow the mower to follow the contour of the
ground and minimize ground scalping. The mower
front roller also aids in minimizing scalping.
The lift linkage with mounting brackets can be
quickly detached by removing the quick-attachable
cotter pins and releasing the tractor quick hitch.
The tapered discharge ch
protected opening for e
flow across the front of
terminates at a large,
fficient air and material
the mower to minimize
clogging.
ute
47
CAUTIONI This symbol is used to call your attention to
instructions concerning your personal safety. Be sure to
observe and follow these precautionary instructions.
The discharge shield on the mower must be
attached at all times while operating the mower.
Keep the machine in good operating condition and
keep safety devices in place. Use guards or shields
as instructed in Operator's Manual.
Children should not be allowed to operate the
mower unless properly supervised, and are physi-
cally and mentally capable of safe operation.
Never place hands or feet under the mower, in the
discharge chute, or near any moving parts while the
tractor engine is running. Do not work on the
mower with the engine running.
Never leave the tractor engine running unattended
or permit it to be operated by persons not acquainted with its use and the rules for safe operation.
Stay alert for holes in terrain and other hiddenhazards.
Be sure all stones, branches, or other objects that
might be picked up and thrown by the mower
blades are removed before starting to mow.
Do not allow anyone in the area opposite the dis-
charge chute while mowing. Although the area has
been supposedly cleared of foreign objects, small
objects may have been overlooked and may be
discharged by the mower.
Disengage power to any attachment when transporting or not in use.
It is recommended that the machine be stopped
and inspected for damage after striking a foreign
object and that any damage be repaired before
restarting and operating the machine.
Watch out for traffic when crossing or near roadways.
not carry passengers or give rides.
Do
2.
3.
4.
Mower must be supported by the tractor.
Level the mower. See pages 7 and 8.
Engine Speed: Operate the engine at full
throttle.
Ground Speed: Choose a ground speed that will
satisfactorily handle the amount of material to be
cut.
48
1. Power take-off clutch lever
2. Mower support brackets
3. Mower support clevises
4. Runners
5. Lift stop
6. Hydraulic lift handle
7. V-belt tension bolt
8. Extension spring measurement
38-inch mower.
9. Front hanger cover
10. Quick hitch
11. Power take-off clutch rod
12. Support pins (spring loaded)
13. Deflector shield
14. Extension spring
15. Gauge wheels
49
~D OPERATING
1. Power take-off clutch lever2.
Mower support brackets3.
Mower support clevises4.
Runners5.
Lift stop6.
Electric lift control switch*7.
V -belt tension bolt
44 and 50-inch mower.
*Optional Equipment
THE MOWER
the engine operating at idle speed, slowlyengage
the power take-off clutch lever. Advancethe
throttle to full throttle.
STOPPING THE MOWER
Disengage the power take-off clutch lever (to therear
positiQn) and reduce the engine speed.
I
50
8. Idler spring tension release
9. Quick hitch10.
Power take-off clutch rod
11. Support pins (spring loaded)
12. Deflector shield13.
Gauge wheels
ADJUSTMENT
NOTE: Check the tires for proper inflation before
making a level and height adjustment.
adjust the mower for level, first place the
tractor on a level surface, preferably a hard surface
area such as a garage floor or sidewalk.
ADJUSTING
LEVEL
STARTING
With
To
LEVEL ADJUSTMENT -Continued
1. Support brackets2.
Support clevises
ADJUSTING AND OPERATING
38-inch mower shown.
A CAUTION! Be sure to turn off the
engine, remove the ignition key, set the
brake pedal in the locked position, and
disengage the power take-off clutch.
Set the lift handle stop for the desired mowing
height. To set the lift handle stop, raise the mower
to the desired cutting height and adjust the stop so
it contacts the lift handle. Then tighten the knob
securely. The mower can then be raised to cross an
obstacle, etc., and lowered, maintaining the preset
height.
Side to Side
Lower the mower to the ground and remove the
quick attachable cotter pin and flat washer secur-
ing the right lift link to the right tractor lift arm.
Pitch the lift link back to clear the pin and turn the
lift link clockwise or counterclockwise so the
height from the top of the mower housing to the
surface is equal on each side.
1. Adjustable lift link2.
Support clevises3.
Lift frame4.
Lift handle stop5.
Quick attachable cotter pin
and flat washer.
50-inch mower shown.
Lower the mower almost to the surface making
sure the gauge wheels do not touch. Add 13/32 x
13/16 x .O65-inch flat washers, as many as required
under the left or right mower support bracket.
Front to Rear
Lower the mower to the preset cutting height.
Rotate the center and one outer blade so they are
parallel and pointing straight to the front and rear.
Then adjust the two support clevises at the front of
the mower so the front edge of the center blade is
level with the back edge of the outer blade.
NOTE: If mower is not level, it will adversely
affect the performance.
NOTE: (38-inch mower only) If correct side to
side adjustment cannot be obtained after adjusting
the lift link, proceed as follows:
51
V-BEL T
Main Drive Belt-(38-inch mower)
ADJUSTING AND OPERATING
1. V-belt tension bolt2.
Extension spring measurement3.
Front hanger cover
The main drive V -belt is adjusted for tension by
the V-belt tension bolt. Tighten the locknut to
increase belt tension and loosen the locknut to
decrease the belt tension.
When installing a new belt, the initial tension is
obtained by adjusting the bolt so the distance
measures approximately 3-1 /2-inches from the cen-
ter of the pulley (at the extension spring) to the
inner face of the front hanger cover.
The main drive belt is properly tensioned when the
extension spring coils are spread approximately
1/16-inch.
NOTE: After the first half hour of mowing,
readjust bolt to the 3-1 /2-inch dimension.
When belt slippage occurs or spring coils touch,
readjust to 1/16-inch spread. Under no condition
should the tension adjustment distance be allowed
to fall under 3-1/8-inches.
NOTE: When installing a new belt always checkthe
condition of the pulleys and if they are not in
satisfactory condition, replace them with new
pulleys available at your I nternational Harvesterdealer.
To install or remove the belt, loosen the V-belt
tension bolt, raise the mower and disconnect the
power take-off clutch lever rod. NOTE: Refer to
the Front Power Take-off section of the Tractor
Operator's Manual. This will provide sufficient
clearance between the wear and thrust buttons on
the clutch to allow V-belt to pass through. Re-
adjust V-belt tension as previously described.
52
V-BEL T
Main Drive Belt-(44-inch and 50-inch mowers)
AND OPERATING
1. Front cover2.
Idler ratchet3.
V -belt tension bolt
main drive V-belt is properly tensioned whenthe
idler ratchet is positioned as shown on the
decal on the front cover of the lift frame.
To adjust the belt for proper tension tighten the
V-belt tension bolt so the notch on the idler
ratchet is in line with the slot on the cover as
shown in the illustration.
NOTE: After the first half hour of mowing, check
the belt for proper tension.
ADJUSTING
The
a
NOTE: When installing
the condition of the pull!
satisfactory condition, I
pulleys available at youl
dealer.
new belt always check
~ys and if they are not inreplace
them with newr
I nternational Harvester
To install or remove the belt, disengage the idler
ratchet to take the tension off the belt. Readjust
the V-belt tension as previously described.
53
HEIGHT OF CUT
ADJUSTING AND DPERATING
Set the lift stop for the desired height of cut.
Refer to the Tractor Operator's Manual with
respect to the type of I ift system on the tractor.
CLEANING
Clean the underside of the mower at the end of the
mowing season and when the build-up of cut
material on the underside is noticed. Also, remove
the belt cover and remove any accumulation.
BLADE CARE
The cutting blades must be kept sharp at all times.
The blades can be sharpened on the mower with a
few strokes of a file or they can be removed from
the mower and sharpened on a grinding wheel.
NOTE: Sharpen ends evenly so that the blades
remain balanced. However, if the cutting edge of a
blade is within 3/8-inch of the wind wing, it is
recommended that new blades be installed. New
blades are available at your I H dealer.
Also, before winter storage, remove idler pivot
shaft and grease the area where the torsion spring
and id ler arm tube ride.
1. Spindle bearings
38-inch mower.
A CAUTION! Be careful not to cut your-
self when sharpening the blades or
cleaning the underside of the mower.
When removing the blades, hold the welded hex.
nuts on the pulleys with a 1-1/4-inch socket
wrench to remove the hex. nuts holding the blades.
After replacing blades, grease the threaded end of
the shaft to prevent rust build-up.
When replacing the blades, be sure they are
assembled so the cutting edges are in the direction
of rotation with the wind wings pointed upward
and the washers assembled on top and bottom of
blades, and tighten securely.
NOTE: If the spindle nuts are removed for any
reason, they should be retightened to 55 to 60
foot-pounds torque when replaced.
LUBRICATION
After every 16 hours of operation, and before
putting in winter storage, lubricate the spindle
bearings using I H 251 H EP grease or equivalent No.
2 multi-purpose lithium grease.
1. Spindle bearings
44-inch and 50-inch mowers.
GENERAL
After first 1/2 hour and every 4 hours thereafter of
running, check the V-belt tension and adjust if
necessary.
54
No accident-prevention program can be suc-
cessful without the wholehearted co-operation
of the person who is directly responsible for the
operation of equipment.
To read accident reports from all over the
country is to be convinced that a large number
of accidents can be prevented only by the
operator anticipating the result before the
accident is caused and doing something about
it. No power-driven equipment, whether it be
transportation or processing, whether it be on
the highway, in the harvest field or in the
industrial plant, can be safer than the man who
is at the controls. If accidents are to be pre-
vented-and they can be prevented-it will be
done by the operators who accept a full measure
of their responsibility.
It is true that the designer, the manufacturer,
the safety engineer can help; and they will help,
but their combined efforts can be wiped out by
a single careless act of the operator.
It is said that' 'the best kind of a safety
device is a careful operator. II We ask you
to be that kind of an operator.
Accidentsbe
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