Mtd HWSS 80, HWE 80 INSTRUCTIONS Manual
SAFETY INSTRUCTIONS
This symbol is used to coil your attention to instructions concerning your personal
safety, Be sure to observe and follow these instructions.
Disengage all clutches and shift into neutralbefore
starting the engine.
Dis engage 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 quicklyREAD
THE OPERATOR'S MANUAL.
Do not allow children or adults to operate
the equipment without proper instructions.
Clear work area of objects which might be
picked up by the mower and thrown.
Disengage power to any attachment when
transporting or not in use.
Do not carry passengers. Keep children
and pets a safe distance away.
power take-off, shifting into neutral, settingthe
parking brake, stopping the engine and
removing ignition key when leaving machine
unattended.
to prevent tipping or los s of control.
Watch out for traffic when crossing or nearroadways.
When u~ing 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
fill the fuel tank indoors. Als 0, do not smoke
when working around inflammable fuel. Wipe
up spilled gasoline. C. Replace gasoline cap
securely... Open doors if engine is in a
garage -exhaust gasses are dangerous.
Use gasoline' only as a fuel, and never asa
cleaner.
Keep machine in good operating condition
and keep safety devices in place. Use guards
as instructed in Operator1s Manual.Take precautions, such as disengaging
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 themachine.Reduce speed on slopes and in sharp turns
Stay alert for holes in terrain and other
hidden hazards. Hydraulic fluid es caping under pres sure
can have enough force to penetrate the skin.
Don't stop or start suddenly when going
uphill or downhill.
Use care when pulling loads or using heavy
equipment: A. Use only approved drawbar
hitch points. B. Limit loads to those you can
safely control. C. Don't turn too sharp, and
use care when backing. D. Use counterweight
or wheel weights when suggested in Operator's
Manual.
Hydraulic fluid may also infect a minor cut or
opening in the skin. If injured by escaping fluid,see
a doctor at once. Serious infection or reaction can result if medical treatment is not
given immediately. Make sure all connections
are tight and that hoses and lines are in good
condition before applying pressure to the
system. Relieve all pressure before disconnecting the lines or performing other work
on the hydraulic system. To find a leak under
pressure use a small piece of cardboard orwood.
Never use hands.
Ilrust.2
International Cub La-Bay Tractor.
Assembled in this manual are operation,
lubrication, and maintenance instructions for
International Cub and Cub Lo-Boy Tractors.
This material has been prepared in detail in
the hope that it will help you to better under-
stand the correct care and efficient operation
of the tractor.
Your International Harvester dealer has
factory-trained servicemen, modern tools,
and IH service parts to assure you of satisfac-
tory tractor operation. To get the most out of
the t.ractor, and to assure economical opera-
tion and top performance, the tractor should
be inspected periodically by your International
Harvester dealer.
Depending upon your use of the tractor,
these inspections should be performed as
needed, or at least once a year, at which time
a tune-up or other necessary service work
should be performed. Proper pre-season
maintenance will assure you of minimum lost
time when your tractor is most needed.
Dealers are kept informed on the latest
methods of servicing tractors. They carry
stocks of IH parts, and are backed in every
case by the full facilitie s of a nearby
International Harve ster district office and
parts depot.
2
INTRODUCTION
In order to provide a tractor equipped as
nearly as possible to suit each customer's
needs, a variety of extra equipment and acces-
sories is available. Refer to page 76.
Where operating and maintaining instruction on these items is required, it is included
in the instructions for operating or maintaining the tractor. Disregard the instructions
for equipment not on your tractor.
The illustrations in this manual are numbered to correspond with page s on which they
appear; for example. 'Ilusts. 3, 3A and 38, are an
page 3.
Throughout this manual the use of the terms
LEFT, RIGHT, FRONT, and REAR must be
understood to avoid confusion when following
instructions. LEFT and RIGHT indicate the
left and right sides of the tractor when facing
forward in the driver's seat. Reference to
FRONT indicates the radiator end of the tractor;
to REAR; the hitch end. See Illust. 3.
Illust.3A
Location of the troctor seriol number.
Illust.3
Terms of location.
When in need of parts. always specify the
tractor and engine serial numbers including
prefix and suffix letters. The tractor serial
number is stamped on a name plate attached to
the right side of the steering gear housing.
S.. Illust. 3A.
The engine serial number is stamped on the
left side of the engine crankcase to the right
of the carburetor. This serial number is preceded by the letters FGUBM. S..lllust. 38.
Illust. 38
Location of engine serial number.
3
Illust.4
Instruments and controls (12.volt system).
-BRAKE PEDALS
These pedals are used to stop the
tractor, to hold the tractor in a stationary position, or to assist in making sharpturns.
The brake pedal latch (behind the left brake
pedal) is used to latch both brake pedals
together, causing the brakes to operate
simultaneously.
To stop the tractor, latch the pedals
together so both brakes will operate
simultaneously when the pedals are
pressed down.
To hold the tractor in a stationary
position, latch the pedals together,
depress and lock them in this depressed
position by using the brake pedal lock.
81
A-77082
Instruments and control s (6-volt system).
Illust.4A
To assist in making a sharp turn, the
pedals must be operated individually,
depressing the pedal on the side toward
which the turn is to be made.
4
INSTRUMENTS AND CONTROLS
BRAKE PEDALS -Continued
Caution! Always latch the brake pedals
together when driving the tractor in high
gear. To latch the pedals together. engage the latch (located in back of the left pedal)
in the slot in back of the right pedal. When the
brake pedals are not latched together. the
latch should rest in the slot in back of the left
brake pedal.
The brake pedal lock (1IIust. 12A) is used to lock
the brake pedals in the depressed position.
This prevents the tractor from moving.
CLUTCH PEDAL
This pedal. when depressed all the way.
disengages the engine from the transmission.
GEARSHIFT LEVER
Reverse ~ -c
Second
speed
forward
~~
~
ENGINE SPEED CONTROL LEVER
This lever controls the speed of the engine
and, when set in a given position, will maintain
a uniform engine speed even though the engine
load may vary.
Do not permit the engine to run below the
minimum idle speed for any length of time. or
operate the engine at more than the regular.
governed speed. Excessive speed is harmful.
Refer to the "Specifications'! on poge 74.
r'
First
speed
forward
This lever is used to select various gear
ratios provided in the transmission. There
are three forward speeds and one reverse
speed. See Illust. 5. Refer to "Specifications" on
page 74.
'-..)
5. Gear shifting positions.
Third
speed
forward
A-14822
CHOKE ROD
The choke rod makes possible the regulation
of the carburetor choke from the driver's seat.
Pulling out on the choke rod closes the carbu-
retor choke for starting the engine; pushing it
back in opens the choke.
CARBURETOR CHOKE LEVER
The carburetor choke lever controls the air
supply to the carburetor. When the choke lever
(1IIusts. 9 and 9A) is moved up all the way (closed
position) the air supply is cut off, thereby enriching the fuel mixture for starting the engine.
If your tractor is not equipped with a cranking
motor and choke rod, move the choke lever up
all the way before cranking the engine. Moving
the choke lever back down opens the choke for
normal engine operation.
Illust. SA
Various positions of the engine speed control lever.
GOVERNOR
The governor is set at the factory and
should require no adjustment. Consult your
International Harvester dealer if the governor
does not function properly.
IGNITION SWITCH (12-Volt System)
A key-type ignition switch (1IIust. 4) is located on the instrument panel. Turn the key
clockwise to a horizontal position to turn on
the ignition. The key cannot be removed when
in this position.
Note: When the engine is not operating, or
the engine has stalled and the operator leaves
the tractor, the key must be turned to the
"OFF" position to prevent battery discharge.
PUSH BUTTON STARTING SWITCH (12-Volt System)
Pushing the button in completes the electri-
cal circuit between the battery and the cranking
motor and causes the cranking motor pinion toengage
the flywheel ring gear, thereby cranking
the engine. See Illust. 4.
5
~
'!Iust.
INSTRUMENTS AND CONTROLS
IGNITION SWITCH BUTTON (6-Volt System)
This button (1IIust. 4A) closes and opens the
electrical circuit for operating and stopping
the engine. Pull the button out for operatingand
push it in to stop the engine.
Note: On tractors with battery ignition,
when the engine is not operating or the engine
has stalled and the operator leaves the tractor,
the ignition switch button must be pushed all
the way in, so that the switch is in the "OFF'!
position, to prevent battery discharge.
STARTING SWITCH CONTROL ROD (6-Volt System)
To start the engine, adjust the choke rod
and pullout on the starting switch control rod
as explained on poges 9 and 10. See Illust. 4A.
LIGHTING SWITCH (Tractors Equipped with Electric
Starting and Warning Light)
The switch has two positions; "OFF" and
"ON". Placing the switch in the ., ON" posi-
tion activates the warning light.
LIGHTING SWITCH (Tractors Equipped with Electric
Starting and Lightin g)
The switch has four positions: "OFF"
position; "D" position for dim headlights,
bright instrument lights, a red taillight, and
a warning light; "B" position for bright
headlights, instrument lights, a red taillight,
and a warning light; and "R'I position for
bright headlights, instrument lights, and a
white rear light. The red taillight should
always be used when traveling on the highway
at night or during times of poor visibility.
The white rear light is for field use only and
should not be used on the highway.
BELT PULLEY AND POWER TAKE-OFF SHIFTER ROD
Location of 0; I pressure gauge.
Illust. 6
and the first mark when the engine is running
at speeds approximately 100 r.p.m. above
slow idle speed. If it does not, stop the engine
immediately and investigate the cause of the
oil pressure failure. If you are unable to find
the cause, consult your International Harvester
dealer before operating the engine.
Illust. 6A
Oil pressure gouge.
CHARGE INDICATOR
This instrument indicates whether the gen-
erator 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 .generator.
Refer to pages 33 and 34 for additional information.
The shifter rod is used to engage or dis-
engage the belt pulley or the power take-off.
Refer to pages 19 and 20 for operating instructions.
OIL PRESSURE GAUGE
This gauge (II lusts. 6 and 6A) indicates whether
lubricating oil is circulating through the
engine. The indicator needle should move at
least one-third of the distance between "0"
Illust. 68
Charge indicatar.
6
TRACTOR BREAK.IN PROCEDURE
Never operate an engine immediately under
full load. Break it in carefully, no load, light
load, and medium engine load for the first 25hours.
such as plows or disk harrows during
this period.
LUBRICA TICH
Tractors packed for export have all oil
drained from the engine crankcase, air cleaner
and all gear cases.
PNEUMATIC TIRES
Before moving the tractor, check the air
pressure in the pneumatic tires and inflate or
deflate the front tires to twenty pounds and the
rear tires to twelve pounds. Refer to the tables
on poges 50 ond 51 for more complete information.
ENGINE COOLING SYSTEM
Be sure the drain plug underneath the radi-
ator is closed. See Illust. 22.
Tractors shipped to destinations in the
United States and Canada have the cooling system filled with antifreeze solution. Check the
coolant level in the radiator. When cold, the
coolant level should be slightly below the bottom of the filler neck.
If water is added, use only clean water;
soft or rain water is recommended, as it does
not contain alkali, which forms scale and even-
tually clogs the passages.
Illust.7
Crankcase breather and all level gauge.
Lubricate the entire tractor, using the
"Lubrication Guide. II
Check the oil levels of the engine crankcase
air cleaner, transmission, belt pulley housing
and all gear cases to see that they are filled to
the correct levels with oil of the proper vis-
cosity for the prevailing temperature. Refer
to "Lubrication Guide" on poges 66 to 71.
Never start or operate the engine without
water or antifreeze solution in the cooling
system.
For further information, see "Cooling
System" on pages 21 to 24. If the tractor is to be
operated in freezing temperatures. refer to
"Cold Weather Precautions" on page 55.
FUEL SYSTEM
International Harvester gasoline burning
engines are specifically designed for use with
regular grade gasoline having a 90 minimum
octane rating -Research Method (approximately 84 Motor Method).
Use clean fuel and keep it clean. Store fuel
in tanks equipped with hose and nozzle to prevent contamination of the fuel. The use of
funnels, cans, and drums is not recommended
because they are difficult to keep clean.
INSTRUMENTS AND CONTROLS
Thoroughly acquaint yourself with all instru-
ments and controls as described on pages 4to 6.
7
Air cleaner cap. Remove any dirt or chaff.
Air cleaner oil cup Remove, clean and refill. See the "Lubrication Guide. II
Lubrication points. See "Lubrication Guide. "
Cooling system. Check the level of the coolant in the radiator.
FILLING THE FUEL T AHK
Do not smoke or use an oil lantern when
working around inflammable fuels. When pour-
ing fuel, keep the hose and nozzle or the funnel
and container in contact with the metal of the
fuel tank to avoid the possibility of an electric
spark igniting the fuel. Do not light matches
near inflammable fuels, as the air within a
radius of several feet is mixed with a highly
explosive vapor.
The fuel tank filler cap has air vents. See
Illust. SA. Keep these vents open at all times to
assure proper flow of the fuel.
Illust.8
Filling the fuel tank.
Fill the fuel tank, preferably at the end of
each day's work. This will force out any moisture-laden air and prevent condensation.
Note: Do not fill the tank to its full capacity
as spa~e is required for vapor expansion in
the event of a temperature change. A tar.k
filled to capacity may overflow if exposed to a
rise in temperature or direct sunlight.
A Caution! Never remove the fuel tank cap
or fill the fuel tank when the e.'lgine is
running, is hot, or near an open flame.
Illust. SA
Vent holes in filler cop.
AIR CLEANER OIL CUP
The air cleaner cap should be cleaned, and
the oil in the air cleaner oil cup should be
changed more frequently than every ten hours
of operation, if unusually dusty and dirty conditions are encountered.
Illust.88
Oil level bead in air cleaner oil cup.
8
~
This engine is designed to operate on gasoline with a 90 minimum octane rating (Research Method).
The use of unleaded gasoline will lengthen spark plug and valve life, maintain engine performance
FUEL SYSTEM
Before attempting to start or operate the tractor, be sure you
review the instructions for the new tractor and thoroughly famil-
iarize yourself with the instruments and controls.
longer, and reduce rust and corrosion of engine while stored.
starting switch and wait a minute or two;
then try again.
Fuel
shut-r
valve
Note: Never operate the cranking motor while
the engine is operating.
6. Slowly release the clutch after the enginestarts.
STARTING THE ENGINE (6-Volt System)
1. Put the gear shift lever in the neutral
position. See Illust. 5.
2. Pull the choke rod all the way out. See
Illust. 4A.
Choke lever
(in closed I
111ust.9
Fuel system and controls.
Be sure the shutLoff valve on the fuel
strainer under the gasoline tank is open. To
prevent leakage or seepage when the valve is
in its full-open position, screw out the needle
stem (shut-off valve) until the seat on the stem
is tight against the stop.
STARTING THE ENGINE (12-Volt System)
1. Put the gearshift lever in the neutral
position. See Illust. 5.
2. Pull the choke control button all the way
out.
When using the choke, avoid overchoking,
as excessive use of the choke will flood the
engine, making it hard to start. The use of
the choke for starting will vary, depending on
temperature and altitude.
3. Advance the engine speed control lever
one-third. See Illust. SA.
Avoid overchoking, as excessive use of the
choke will flood the engine, making it hard to
start. The use of the choke for starting will
vary, depending on temperature and altitude.
3. Advance the engine speed control lever
one third. See Illust. SA.
4. Pullout on the ignition switch button.
See Illust. 4A.
5. Disengage the engine clutch by pressing
down on the clutch pedal. See Illust. 4A.
6. Pullout on the starting switch control rod
(1IIust. 4A) and release it as soon as the engine
starts. However, do not operate the cranking
motor for more than 30 seconds at anyone
time. If the engine does not start within this
time, release the starting switch control rod
and wait a minute or two; then try again.
4. Disengage the engine clutch.
5. Turn the ignition key clockwise to a
horizontal position. Press the push button
starting switch and release it as soon as the
engine starts; however, do not operate the
cranking motor for more than 30 seconds at
anyone time. If the engine does not start
within this time, release the push button
Illust.9A
Closing the carburetor choke lever.
(Tractors without cranking motor).
9
GASOLINE ENGINE
STARTING THE ENGINE -Continued
while the engine is rotating.
7. Slowly release the clutch after the en-
gine starts.
Caution! When hand cranking the engine,
be sure that the gearshift lever is in the
neutral position. Always stand in a po-
sition that will eliminate any possibility of being struck by the starting crank, if there is a
reversal of the direction of the engine. Crank
the engine by using quick up- strokes; do not
spin it.
AFTER THE ENGINE STARTS
As soon as the engine starts, adjust the
choke to a point where the engine operates
without missing, and as the engine warms up,
open the choke by gradually pushing the choke
rod all the way in, or by moving the carbu-
retor choke lever down all the way. See !llusts. 9
and 9A. Do not use the choke to enrich the fuel
mixture, except when starting the engine.Note: Never operate the cranking motor
Immediately after the engine starts, check
the oil pressure gauge (1IIust. 6A) to see whether
lubricating oil is circulating through the engine. If it is not, stop the engine and inspect the
oil system to find the cause of failure. If you
are unable to find the cause, be sure to con-
sult your International Harvester dealer before
operating the engine.
STOPPING THE ENGINE
Retard the engine speed control lever by
pulling it all the way back (1IIust.4A). Allow the
engine to cool slowly from full-load operation
by slowly idling the engine for a short time.
Then turn the ignition key counter-clockwise to
the !'OFF'! position (12-volt system) or push
the ignition switch control button all the way in
(6-volt system) to stop the engine. It is advisable to close the gasoline shut-off valve if the
engine is to be stopped for any length of time.
Note: Unusual operating conditions, or fuel
octanes below those recommended, may require modification of the specified ignition
timing (shown in "Specifications") to a retarded
position. Retard from the specified setting as
required, approximately one degree for each
octane below 90, to eliminate knock (not more
than 6 degrees). It is recommended that this
be done by an International Harvester dealer.
CLEANING THE FUEL STRAINER AND SEDIMENT
BOWL
Clean the fuel strainer after every 250
hours of operation. To do this, proceed asfollows:
Close all shut-off valves.
2. Take the strainer apart by loosening
the nut under the sediment bowl.
3. Clean the sediment bowl and clean the
screan if necessary.
4. When reassembling, be sure the cork
gasket between the bowl and the main body is
in good condition and does not leak. Use a new
gasket if necessary.
..Nut.
Screen
-Gasket
Bowl
4-147541
(1Iust.10
Fuel strainer showing the gloss bowl removed for cleaning.
1.
10
GASOLINE FUEL SYSTEM
CARBURETOR
Use clean fuel; the presence of dirt and
water will disturb the functioning of the carburetor. Clean the fuel screen after every 500
hour s of ope ration.
The fuel screen can be removed for cleaning by unscrewing the fuel line fitting and re-
moving the elbow; clean the screen and re-
place it.
The flange nuts which hold the carburetor
to the manifold should be checked periodically
for tightness. See "A", Illust. 11.
Occasionally check cover screws which
fasten the fuel bowl to the fuel bowl cover. S..
"B" 1!lust. 11. They should be kept tight to
avoid any air leakage past the fuel bowl cover
ga sket.
The engine and carburetor are correctly
set when shipped from the factory. If this set-
ting has been disturbed for any reason, pro-
ceed as follows:
Adjusting the Idle Adjusting Screw
Close the idle adjusting screw to its seat by
turning it to the right (or in); then open it one
turn. Start the engine and operate it at fast
idling speed (withqut any load) until thoroughly
warm. Cover the radiator if necessary or
close the radiator shutter if the tractor is so
equipped.
Illust. 11
Carburetor adjustment.
While the engine is running at fast idle speed.
it is advisable to screw in the throttle stop
screw a few turns to prevent the engine from
stopping when the throttle is closed. Now close
the throttle. 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 or rolls while backing
out the throttle stop screw, the idle adjusting
screw may be adjusted either in or out until the
engine operates smoothly. Speed up the engine
for a few seconds; then recheck the idle adjustment. A slight adjustment in or out will give
the smoothest idle.
ADJUSTING
11
Illust. llA
Seat post base in the forward position
(Internotional Cub).
A CautionlOnlY one person, the operator,
should be permitted to ride on the tractor when it is in operation.
THE SEAT (International Cub)
The tractor seat can be set in either of two
positions by removing the tool box and changing
the position of the two cap screws in the seat
post base (1IIust. llA). giving a total adjustment
of 1-1/2 inches. Tighten the cap screws se-
curely when reas sembling and replace the tool
box.
ADJUSTING THE SEAT (International Cub La-Boy)
Before starting the tractor, adjust the seat
to the most comfortable position of the fourpositions
available to the operator.
The seat is quickly and easily adjusted by
changing the position of the four cap screws
in the seat support bracket (1IIust. 12) giving a
total adjustment of 4-3/8-inches. Tighten the
cap screws securely when reassembling.
DRIVING THE TRACTOR
ADJUSTING THE SEAT (International Cub Lo-Boy)
-Continued
made. The brake pedals must be unlatched so
they can be operated individually.
TOWING THE TRACTOR
When towing is necessary, cuse a rope,
chain, or cable and have an operator steer the
tractor and operate the brakes.
Attach a tow rope, chain, or cable around
the front axle and steering gear housing. When
towing a tractor, do not exc eed a speed of
twenty miles per hour.
Seat in the forward position
Illust.12
(International Cub Lo-Bay).
STARTING THE TRACTOR
1. Advance the engine speed control lever
slightly. See Illust. SA.
2. Disengage the clutch by pressing the
clutch pedal all the way down.
3. Hold the clutch pedal in this position and
move the gearshift lever to the desired speed.
4. Start the trac.tor in motion by slowly releasing the clutch pedal and advancing the engine speed control lever to the position where
the engine operates best for the load to be
handled. Note: Do not shift gears while the
engine clutch is engaged or while the tractor
is in motion.
50 Do not rest your feet on the clutch or
brake pedals while driving the tractor, as this
will result in excessive wear on theliningso
STOPPING THE TRACTOR
Disengage the clutch by pressing down
firmly on the clutch pedal, and move the gear-
shift lever to the neutral position. Use thebrakes
if necessary.
LOCKING THE BRAKES
Always lock the brakes when the tractor is
parked on a grade or when doing belt work. To
lock the brakes, first latch the brake pedals
together with the latch as previously described.
Now press down on the foot pedals; then place
the brake pedal lock in the engaged position as
shown in Illust. 12A. To disengage the lock, press
down on the foot pedals and lift the lock out and
place it in the disengaged position, against the
right brake pedal.
Always latch the brake pedals together be-
fore driving the tractor in high gear. To latch
the pedals together, engage the latch (located
in the back of the left brake pedal) in the slot
in the back of the right pedal. See Illust. 12A. When
the brake pedals are not latched together, the
latch should rest in the slot in the back of the
left brake pedal. See Illust. 12A.
STEERING THE TRACTOR
The tractor is steered in the conventional
manner by means of the steering wheel; how-
ever, to make a sharp or pivot turn, press
either the right or left brake pedal, depending
on the direction in which the turn is to be
Brake pedals latched together and lock engaged to hold tractor
Illust. 12A
in a stationary position.
12
Illust.13
Touch.Control system.
The Touch-Control system is ready to operate whenever the engine is running. You will
receive the maximum of satisfactory service
by closely adhering to the following simple precautions and service operations.
The importance of keeping the system free
from all dirt, grit, and other foreign matter
cannot be stressed too strongly. Keep the
Touch-Control fluid reservoir, pipe lines, and
pump as clean as possible at all times. The
same care must be given to the cylinder, hose
lines, and connections. As an added precaution
against the entry of dirt into the system, the
reservoir is constructed without an air vent.
Sufficient air space is allowed above the fluid
level to compensate for the pressure changes
occuring during the operation of the system.
As a result a small amount of pressure may
be found in the reservoir upon removing the
filler plug when checking the fluid level.
Note: Always keep the Touch-Control lever
or levers in the rearward position (toward
tractor seat) when the tractor or the Touch-
Control system is not being actively used.
This places the piston in the retracted position,
preventing exposure to any moisture which
may have conden~ed in the leather dust boot.
The control lever ('Ilust. 13) gives the operator
complete, instantaneous and effortless control
of all the direct-connected equipment operating
adjustments. The use of the lever will depend
on the type of equipment mounted on or pulled
by the tractor. Complete instructions for operating the lever are included in the Owner's or
Operator's Manual furnished with the equip-
ment. General instructions for operating the
lever are given below.
The control lever quadrant is provided with
a pair of adjustable Touch-Control lever stops.
The front stop when set in a given position
will limit the travel of the control lever and
prevent the equipment from being raised above
the desired height.
The rear stop is used to point out the position where the control lever should be each
time the equipm ent is lowered to maintain a
uniform working depth.
To lower the equipment, move the control
lever back until the equipment has reached the
desired working depth; then move the rear stop
to this position and tighten in place.
13
TOUCH-CONTROL SYSTEM
The working depth will be maintained by
moving the lever back to the stop each timethe
equipment is lowered.
After attaching the equipment to the tractor, the Touch-Control lever front stop must
be properly set if there is a possibility of the
equipment not clearing the underside of the
tractor. Once the stop is set, the equipment
can be raised quickly by a flick forward on the
control lever.
To set the Touch-Control stop. slowly
move the control lever forward to raise the
equipment and stop it before the equipment
hits any part of the underside of the tractor.
Then move the stop up against the control
lever and tighten it in this position. This will
prevent the control lever from being moved
past the point of the desired lifting height.
Note: If the equipment hits the underside of
the tractor. in addition to doing possible dam-
age to the tractor or equipment. the Touch-
Control system will not have completed its
cycle and this will cause the pump unit to operate at maximum high pressure and heat the IH
Hy- Tran@ fluid exces si vel y. thereby causing
possible internal damage to the pump. This
condition can be quickly detected by a notice-
able loading of the engine.
If this condition should occur. immediately
move the control lever back and set the con-
trol lever stop at a point where the raised
equipment will not hit the underside of the
tractor.
AIR IN THE SYSTEM
Make certain that all connections and openings are well sealed. The entire system must
be kept tightly sealed at all times, not only to
prevent loss of fluid but also to avoid entrance
of air in the inlet end of the system. Air entering the system interferes with proper lubrica-
tion of moving parts. It causes an increased
amount of vibration and an unsteady pressure.
Presence of air in the system will be noticed
by a noise in the pump or by the pump laboring
when operating under high pressure. Proper
filling of the reservoir and working the system
during the filling process, will work the air
out of the system.
Freeing the System of Trapped Air
Start the tractor engine and operate it at a
moderate idle speed. With the filler plug re-
moved, move the Touch-Control lever or
levers back and forth 10 to 12 times through its
full range of travel. This quickly frees the system of trapped air. Then with the control lever
in the rearward position (toward tractor seat),
stop the engine.
If necessary. add sufficient clean fluid tothe
reservoir to bring the iluid level to within
liZ-inch of the bottom of the filler opening.Replace
and tighten the filler plug.
Touch-Control raises and lowers the com-plete
hitch, thus raising the equipment to the
instructions are general only. Refer to the imple-
transport position, or lowering it to the work-
ing position.
The leveling crank at the rear of the tractor
controls leveling. and the depth adjusting crank
on the right side controls depth adjustment.
When operating the hitch in other than thefixed
drawbar position, the belt pulley must be
removed. The belt pulley shaft must be covered with the belt pulley shaft guard and the
power take-off shaft must be covered with the
power take-off shaft guard, if not already soprotected.
Note: Refer to page 13 for additional information
r~garding the Touch-Control system.
Do not attempt to gauge the depth with this
lever unless so instructed in the equipment
manual. Plows must be free to float up and
down and to seek their own level as determined
The leveling crank controls leveling as required
permits the plow to swing from side to side,
is free to swing.
14
Note: The following operating and adjusting
ment Operator's Manual for specific instroctions.
The Touch- Control hand lever serves to
control the raising and lowering of equipment.
by the hitch setting. The depth adjusting crank
(1IIusts. 15 and 16) serves to control the working
depth of plows and various other equipment.
for plowing when opening up a furrow or for a
change in plowing depth. The diagonal link
when the lock bolt is loose so the diagonal link
FAST-HITCH
Note: Before operating tractors equipped
with Fast-Hitch. the front wheels must be
equipped with a set of either one-piece or twopiece wheel weights and the front tire tubes
filled three-quarters full with a calcium chlo-
ride solution. See IlLiquid Weights" and
"Front Wheel Weights".
When using the utility carrier with the trac-
tor, additional front end weight is required in
proportion to the weight of the payload as shown
under "Fast-Hitch Load Limitations".
Illust. 15
Rear view af International Cub Troctor with Fost.Hitch.
15
FAST-HITCH
Rear view of International Cub La.Bay Tractor with Fast.Hitch.
Illust. 16
16
FAST-HITCH
COUPLING THE EQUIPMENT
Adjust the height of the hitch socket with
the Touch-Control and level the hitch with the
leveling crank so the prong of the equipment
can enter the hitch socket when the tractor is
backed against the equipment (1IIusts. 15 and 16).
The latch snaps shut when the prong reaches
the proper position.
To uncouple the equipment on ground level.
lower the equipment to the ground. reach back
and lift the hitch latch (II lusts. 15 and 16) with the
forefinger. If the latch is difficult to disengage.
back the tractor slightly against the equipment
to relieve the strain on the latch. The latch
will remain open until the equipment prong is
withdrawn.
HITCH ADJUSTMENTS
The height of the hitch determines the
working depth of the equipment. The depth
adjusting crank (1IIusts. 15 and 16) raises and
lowers the front end of the pull bar to reach
the desired working depth called for in the in-
structions in your equipment manual.
Fast-Hitch pull bar and diagonal links may be
removed to provide more clearance under thetractor.
FAST-HITCH LOAD LIMITATIONS
Caution! Do not overload the rear axle or
the Fast-Hitch components with the
equipment or accessories.
The transport loads listed below are considered satisfactory for Fast-Hitch operation.
The equipment weights shown in the following
examples do not include any allowance for ad-
ditional weights on the equipment.
a. Five-foot disk harrow with ten 20-inch
disks-360 pounds-use a rear wheel tread set-
ting up to 56-inches.
b. Rotary hoe-355 pounds-use a re~r
wheel tread setting up to 56-inches.
Utility carrier.
International Cub -with a 400 pound payload in
the center of the platform -use a rear
wheel tread setting up to 56-inches.
PULL BAR EXTENSION
A pull bar extpnsion is available for pulling
trailing-type equIpment. When in use, the
extension is attached to the pull bar with the
hitch hole toward the rear. It is held in place
by a pivot pin and a quick attachable cotter
pin. When not in use, the pull bar extension
should be turned with the hitch hole toward
the front. See Illusts. 15 and 16.
When plowing. the lock bolt (or hand
screw) on the diagonal link must be loose or
unscrewed far enough so that the diagonal link
is free so the plow can swing from side to
side. Additional lateral swing can be obtained
when required. by removing the quick- attachable cotter pin "A" (1IIusts. 15 and 16) from the
pull bar support.
When operating with middlebusters or culti-
vator s, the lock bolt must be screwed in tightly
to keep the unit in a rigid position to prevent
the equipment from swinging.
When cultivating crops with high foliage,
turn the depth adjusting crank so the hitch bail
is set at its highest position. If necessasy the
International Cub Lo-Boy -use a rear wheel
tread setting up to 56-inches with the front
tire tubes filled three-quarters full with a
calcium chloride solution, the pay load must
be proportioned to the amount of front end
weight as follows:
Maximum
Carrier
Payload i
200 Ibs.
250 Ibs.
In general, the loads must decrease as the
tread settings increase, and the loads must
decrease as the distance from the rear axle
to the center of gravity of the load increases.
Minimum Front End Weight
set of one-piece weights (50 1bs.)
i set of two-piece weights or 2 sets
of one-piece weights (100 1bs. )
-set of two-piece weights and 1 set
of one-piece weights (150 1bs.)
set of two-piece weights and 2
sets of one-piece weights (2001bs.)
c.
3151bs.
3751bs.
17
The tractor exerts its pulling power on
trailing-type equipment by means of the draw-
bar, which is adjustable up and down to ac-
commodate different hitches. Proper hitching
will save both the tractor and the equipment it
is pulling from undue strains. Hitch so the
center line of pull of the tractor will fall in
line with, or at least near, the center line of
draft of the trailing equipment. Hitching to
one side or the other of the line of draft will
cause stresses and strains on both the tractor
and the equipment being pulled, frequently
great enough to do permanent damage. Incor-
rect hitching will also tend to make the tractor
difficult to steer and will result in unsatis-
factory work by the equipment being pulled.
When using a long chain to hitch the tractor
to the load. drive the tractor forward slowly
until all of the slack is taken out of the chain.
~
/"00('1 .
'" 5~'i't1'i
-,
A-IZ".f
When the tractor is pulling power equipment, be
sure that all power line shielding is in place and in
good order.
REMOVING THE DRAWBAR
The quick-attachable drawbar can be
easily removed. To remove the drawbar,
loosen the bolts "A" (1IIust. 18) and unhook the
complete drawbar.
The drawbar on International Cub tractors
can be reversed and placed in the forward po-
sition when so de sired.
ADJUSTING THE DRAWBAR
The drawbar can be set at three different
heights to obtain the proper hitch position.
To raise or lower the drawbar, remove
bolts "B" (1!lust. 18A), and raise or lower the
drawbar to the upper or lower hole in the drawbar bracket. Replace bolts "B" and tighten se-
curely.
Illust. 18
Removing the drawbor.
Illust. 18A
Orawbar adjustment.
18
BELT-PULLEY
pull bar and support assembly must be disconnected and lowered to the ground by removing the pin 'IB'I at the leveling screw housing and the pin lICIt at the lateral link clevises.
Then move the diagonal link to one side. See
Illust. 16.
OPERATING THE BELT PULLEY OR POWER T AKE.OFF
WITH THE TRACTOR STANDING STILL
1. The transmission gearshift lever must be
in the neutral position.
2. Move the engine speed control lever back
to low idle speed.
Don't put on or r~mov~ th~ b~lt from th~ b~lt
pull~y whil~ th~ pull~y is in motion.
If your tractor is equipped with a belt pulley
or power take-off, the following instructions
and precautions should be carefully studied
and followed.
The belt pulley and power take-off are
started and stopped by the sarn.e engine clutch
as the tractor. Be sure to disengage the engine
clutch before rn.oving the belt pulley or power
take-off shifter rod. The belt pulley is driven
by the power take-off shaft; therefore, the sarn.e
shifter rod is used to operate either the belt
pulley or power take-off. The shifter rod
should always be in the disengaged (forward)
position when the belt pulley or power take-off
is not in use.
Note: When the International Cub Lo-Boy
tractor is equipped with the Fast-Hitch, the
3. Depress the clutch pedal to disengage theengine
clutch.
4. Press down on the shifter rod and move it
back to the engaged position; release the shifter
rod and allow it to lock in place.
5. Slowly release the clutch pedal.
6. Observe the following instructions whenusing
the tractor belt pulley:
Secure the equipment to receive power
in the desired location.
Align the tractor belt pulley with the
equipment pulley. Keep the tractor
level if possible.
Observe the direction of belt travel in-
dicated on the belt. and install the belt
accordingly to prevent damaging it.
Tighten the belt enough to prevent the
belt from rubbing against itself during
operation. Do this by driving the tractor into the belt, locking the brakes,
and blocking the tractor rear wheels.
(When using a very long belt or a
crossed belt, it will not be possible to
eliminate all rubbing).
1
2.
3.
4.
Always stop the power take-oIl belore dis-
mounting Irom the tractor.
5. Gradually bring the tractor engine up
to speed, making sure the belt is running trae.
Note: Static electricity, generated by belt
work, can be discharged harmlessly from tractors with pneumatic tire s, by attaching a chain
to the tractor and allowing it to touch the ground
For belt and pulley speeds. refer to poge 75.
l~
BELT -PULLEY AND POWER TAKE-OFF
OPERATING THE POWER TAKE-OFF WITH TRACTOR IN
MOTION
Follow the first four steps outlined above;
then release the power take- off shifter rod and
allow it to lock in place. Keep your foot
pressed down on the clutch pedal (in the disengaged position), advance the engine speed con-
trollever and move the transmission gearshift
lever to the speed that is desired to run the
tractor. Slowly release the clutch pedal. This
will start the tractor in motion with the power
take-off in operation.
Caution! When operating power take-off
driven machines not equipped with an
overrunning clutch (such as a rotary
brush cutter), the following precautions shouldbe
taken:
Slowdown when approaching trees, fences,
or ditches. Flywheel effect of the driven ma-
chine will drive the tractor forward after the
engine clutch is disengaged. To stop the for-ward
travel more quickly, retard the engine
speed control lever, disengage the engine
clutch, move the gear shift lever to the neu-
tral position, and apply tractor brakes.
Replace the removed cap screws with the
extra cap screws supplied with the belt pulley
and power take-off. Use two 3/8 N. C. x 1-3/8-
inch cap screws at 'lA" (1IIust. 20A) and the three
3/8 N. C. x 1-1/8-inch cap screws at 'IB'I. Use
flat washers in front of the lock washers and
tighten the cap screws securely.
Caution! Always cover the power take-offexposed
shaft with the guard flC" (1IIust.
20A) when the power take-off is not being
The specifications for the power take-off
will be found on page 74.
CHANGING FROM POWER TAKE-OFF TO BELT PULLEY
Remove two 3/8 N. C. x 1-3/8-inch cap
screws "A" (1IIust.20A) and the three 3/8 N. C.
x 1-1/8-inch cap screws at "B". Apply a light
coating of grease to the power take-off shaft
and female spline in the belt pulley housing.
Then slide the belt pulley and housing complete
on to the power take-off splined shaft.
CHANGING FROM BELT PULLEY TO POWER TAKE-OFF
Remove two 3/8 N. C. x I-S/8-inch cap
screws "A" (1IIust.20) and three 3/8 N. C. x
1-3/8-inch cap screws "B" and remove the
belt pulley and housing. complete. Set the
belt pulley and cap screws aside for futureuse.
Insert the two 31B N. C. x 1-5/B-inch cap
screws with lock washers at "A" (1IIust.20) and
the three 31B N. C. x 1-3IB-inch cap screws
with lock washers at I'B'I and tighten all cap
screws securely.
Check the lubricant in the belt pulley hous-
ing as instructed in "Lubrication Guide'! on page
71.
used.
Belt pulley and power take-off.
Illust. 20
II lust. 20A
Power take-off.
20
The thermo- siphon principle is used for
circulating water in the cooling system. (The
temperature of the water governs the rate of
circulation.) Therefore, a thermostat and a
water pump are not required.
When the tractor is shipped from the fac-
tory it is equipped with a nonpressure -type
radiator cap.
A pressure-type radiator cap IS available
from your International Harvester dealer as a
replacement for the regular production radiator cap. if so desired.
The gasket surfa...~ must be in good condi-
tion. The cap must be properly tightened to
the stop, and the system must not have loose
connections or leaks. Unless these instruc-
tions are followed, pressure will not be main-
tained, and loss of water and consequent.overheating will result. When draining the radiator, always remove the filler cap to permit
complete drainage.
If the regulating valve is faulty, replace the
radiator cap with a new one of the same type.
Do not attempt to repair or replace any of
the regulating valve parts.
Caution must be exercised in removing the
pressure-type radiator cap when the water in
the cooling system is hot. See instructions in
the following section.
The water is circulated through the engine
block, cylinder head, and radiator by the
thermo- siphon method. As the engine warms
up, the water is heated, expands, and circulates back through the radiator where the
water is cooled before again circulating
through the engine.
When the radiator is equipped with a pres-
sure -type radiator cap, the cooling system
operates under pressure which is controlled
by means of a regulating valve built into the
radiator cap. Always use clean water (soft or
rain water if possible).
FILLING THE COOLING SYSTEM
Be sure the radiator drain plug (1IIust. 22) is
closed; then fill the radiator to a level slightly
below the bottom of the filler neck, when
equipped with a nonpressure-type radiator cap;
or to a level approximately 2-inches below the
top of the filler neck, when equipped with a
pressure-type radiator cap. Filling the radi-
ator to this level will allow for expansion of
the coolant under normal operating conditions.
Use clean water; soft or rain water is recommended, as it does not contain alkali, which
forms scale and eventually clogs passages.
If the engine is to be operated in freezing
temperatures, refer to "Cold Weather Precautions. II
ADDING WATER TO THE COOLING SYSTEM (When
Equipped withe Pressure-Type Radiator Cap)
Caution! If the water in the cooling system
is hot and water is to be added, observe
the following:
Turn radiator cap IIAII (1IIust. 21) slowly
counterclockwise to the safety stop to allow
the pressure of any steam to escape; then
press down on the cap and continue to turn
until the cap is free to be removed.
Before replacing the filler cap, be sure to
remove any chaff or dirt particles which may
be on the gasket surface or cap, and tightenthe
cap clockwise to the stop.
Note: A pressure -cooled system will not
operate properly unless the cooling system is
tight.
21
"A" Radiator cap.
"B" Filler cap gasket.
"C" Filler neck.
Illust. 21
Water level In pressure-cooled radiator.
., D" Upper water tank.
"E" Overflow pipe.
COOLING SYSTEM
ADDING WATER TO THE COOLING SYSTEM (When
Equipped with Pressure-Type Radiator Cap) -Continued
Allow the engine to cool and fill the radiator
slowly to approximately 2-inches below the
top of filler neck I'C'I, Due to expansion, when
the system becomes hot, any excess water
will be discharged through overflow pipe I'E",
Note: Do not pour cold water into the radiator if the engine is very hot, unless conditions
make it absolutely necessary; in which case
start the engine, let it idle. and slowly pour
water into the radiator.
CLEANING THE COOLING SYSTEM
Twice a year or more often, depending
upon the mineral content of the water used,
the cooling system should be drained and
thoroughly flushed. This is particularly im-
portant before using an antifreeze solution.
If the engine is to be operated in freezing
temperatures. refer to "Cold Weather Pre-
cautions" on page 55. For cooling system capa-
cities, refer to page 74.
Drain the cooling system by removing the
plug on the bottom (center) of the radiator
(1IIust.22). Allow the system to drain; then re-
place the plug.
RUST PRi:VEHTIOH
One of the most common causes of engine
overheating is a rust-clogged cooling system.
Rust interferes with circulation and cooling,
which causes overheating.
The practice of flushing the system by forc-
ing water from a hose in the radiator filler
neck, without the use of cleaning solutions,
may be only a waste of time. Iron corrosion
is greater than that of any other cooling sys-
tem metal, which accounts for the large
quantities of rust found in neglected water
jackets. Heavy rust deposits in the water
jacket hold in heat and create local hot spots,
especially around the exhaust valve seats.
Under these conditions. the metal may get so
hot that the valves will stick or burn, or the
cylinder block or head may be damaged by heat
cracking.
Unless the cooling water is treated with a
corrosion preventive, rust and scale will eventually clog the passages in the radiator and
water jacket. This condition is aggravated in
some localities by the formation of insoluble
salts from the water used.
Illust. 22
Cooling system.
IH Cooling System Cleaner, dissolves rust,
scale, and sludge and retards future corrosion
when used according to the directions on thecontainer.
Note: Do not use chemical mixtures to stop
radiator leaks except as a temporary measure
in an emergency. Instead, have the radiatorrepaired.
If the radiator is clogged with insoluble salt
formations, take it to a reputable concern
specializing in the removal of such formations.
Reliable radiator service stations are familiar
with local conditions and are equipped to apply
the proper treatment.
In localities where alkaline, acid, or saline
waters are the only kind available, the addition
of a rust preventive or "inhibitor" will tend to
minimize the corrosive action of such water.
22
COOLING SYSTEM
RUST PREVENTION. Continued
For rust prevention during winter use of
the engine, a fre sh filling of antifreeze containing an effective corrosion preventive
should be used. In the spring, drain and discard the old antifreeze solution, as the rust
preventive or "inhibitor" may be exhausted
from contamination and continued use.
After draining the antifreeze, a rust preventive should be added to the cooling water
to protect the cooling system during warm
weather operation. This inhibitor solution
should be drained and discarded in the fall
when danger of freezing again makes nec-
essary the use of an antifreeze.
RADIATOR CORE
Overheating is often caused by bent or
clogged radiator fins. If the spaces between
the radiator fins become clogged. clean them
with forced air or water. When straightening
bent fins. be careful not to injure the tubes
or break the bond between the fins and tubes.
FAN BELT TENSION
Belts on new tractors (also new replace-
ment belts) lose their tension as they "seat"
themselves in the pulleys. New belts should
be checked after the first 10 hours of engine
operation and eve.ry 50 hours of engine operation thereafter to assure maintenance of the
correct tension. The tension is correct when
the belt can be depressed without effort by the
thumb. approximately 1/ 2-inch to 3/4-inch.
midway between the two pulleys. See Illust. 23.
If the slack is more than I-inch. adjust the
belt as follows:
Illust. 23A
Fan and generatar belts.
before adjusting the fan belt tension. The ten-
sion of the fan belt is adjusted by loosening fan
spindle "G II (1IIust.23A) and moving the fan and
hub assembly up or down until the correct ten-
sion is obtained. After the correct tension is
obtained, tighten fan spindle ffG 'f. To adjust
the generator belt, see "Generator Belt."
After a new belt has been in use approxi-
mately 10 hours, check the tension and adjust
again if necessary.
Illust. 23
Correct belt tension.
Adjusting the Fan Belt
When the tractor is equipped with a gener-
ator, first loosen nuts "A II and "B" (1IIust. 23A)
Removing the Fan Belt
To remove the fan belt. loosen fan spindle
lIC't (1IIust.23A) and slide the fan and hub assembly to the bottom of the groove on the crank-
case front cover. The fan belt can then be
slipped over the bottom drive pulley and
worked up over the fan blades.
Replacing the Fan Belt
Replace the fan belt when it becomes soaked
with grease, or when it is so badly worn that
it does not drive the fan at the proper speed.
When replacing the belt, reverse the procedure outlined uIlder "Removing Fan Belt,"
except that belt can be started on the lower
pulley by hand, and by slowly cranking the
engine. the belt will find the correct position.
23
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