Case K40 User manual

~/~ ~ ~
- C11(' H ROtARY MOWER
K40, ~ K46
Operator's Manual 9-51560
Written In Clear
And
Simple
English
1\ \
J I Case
A Tenneco Company

r----.
IF THIS MACHINE IS USED BY AN EMPLOYEE OR IS
LOANED OR RENTED, MAKE ABSOLUTELY CERTAIN
THAT THE OPERATOR(S), PRIOR TO OPERATING:
1. fS fNSTRUCTED fN SAFE AND PROPER USE.
2. REVfEWS AND UNDERSTANDS THE MANUAL(S)
PERTATNfNG TO THE I\1ACHfNE.
751253
BEFORE STARTING ENGINE
STUDY OPERATOR'S MANUAL SAFETY MESSAGES
READ ALL SAFETY SIGNS ON MACHINE
CLEAR THE AREA OF OTHER PERSONS
LEARN & PRACTICE SAFE USE OF
CONTROLS BEFORE OPERATING
IT IS YOUR RES PON SIBILITY TO UNDE RST AND AND FOL LO W MAN U F ACTURER'S INSTRU CTIONS
ON M ACHINE OPERAT IO N . SERV IC E, AND TO O BSERVE P ERTINENT L AWS AND REGU LAT. IO NS .
OPE RATOR AN D SERVICE MANUA LS MAY BE O BTAIN E D FROM YOUR E QUI PMENT DEA LER.

SAFETY MESSAGES
Regard your lotary mower as <J
CAUTION: Fill gas tank out of
piece of power equipment anci be doors and avoid
spilling gasoline.
sure this manual
is read and under-
Do not fill tank with gasoline while
stood by all who operate It .
A A
smoking or while engine IS running .
CAUTION: Never allow children
h A Maintain your tractor and I otal y
or young teenagers to opel ate the
.. mower In top operating condition.
tractor and rotary mower
A
CAUTION: Unbalanced blades are
a hazard and
will cause premature
wear and failure of bearings and
spindles.
If the blades cannot be
balanced by resharpening, replace
them with new ones.
A
CAUTION: Never g-et 011 or off
the tractor while the mowel IS
running.
- 3-

,
CAUTION: Disengage attachment
h.
A
CAUTION: Give complete and un- -drive lever, stop engine and remove
.. divided attention to the job at hand.
key and spark plug wire(s) before
making adjustments.
CAUTION: Shut off engine, allow
CAUTION: Stop engine, disengage
engine to cool and remove key and
attachment drive, set parking brake
spark plug wire(s) before replacing
and remove key when tractor is
mower drive belt.
unattended.
A A
CAUTION: Disengaqe attachment
A
rn
drive cl utch when someone ap-
CAUTION: Do not allow anyone
proaches or whenever the mower
other than the operator to ride on
is being transported.
the tractor.
A
CAUTION: Be sureyoll knowhow
to ~top the tractol Jnd mower at il
moments notice.
m
CAUTION: Stop and inspect the
mower for damage immediately af-
ter striking a foreign object and
repair damage before restarting and
A
operating the machine.
WARNING: Improper operation of
your tractor on hillsides and slopes
can be dangerous. Avoid improper
operation!
Read and follow the in-
structions
given in the section ti-
rn
tled "Hillside Operation" in this
DANGER: Spinning Blade. Keep manual before operating your trac-
clear. Contact
can injure. tor.
IMPORTANT: Always install new decals whenever the
old decals are destroyed, lost, painted
over or illegible. When individual parts
are replaced that have decals attached,
be sure to install a new decal with the
new part. Replacement decals are a-
vailable from your Case dealer.
- 4 -

HILLSIDE (SLOPE) OPERATION
Avoid operating tractor on hillsides and slopes. To mini·
mize
the possibility of accidents while operating on hills
and/or rough terrain, obey a combination of rules, prac·
tices
and good common sense.
These include:
1. Reading, understanding, and obeying all written safety
messages appearing on decals on the mach ine and in
operator's manuals.
2. Learning from your operator's manual and carefully
from EXPERIENCE how to operate your tractor cor-
rectly. Know your tractor's limitations.
3. Knowing the terrain on which you are operating your
tractor. There are terrain conditions on which your
tractor cannot be operated!
4. Learning to expect changes in operating conditions.
Adding or removing attachments or weight to your
tractor will make your tractor perform differently.
Rain, snow, loose gravel, wet grass, etc., change the
tractive conditions of the terrain requiring changes in
your operating technique or not to operate on that
terrain.
The following paragraphs will cover these practice s one at
a time. Read and study them. The examples provided are
not all inclusive but will give you a firm understanding of
the requ irements for avoidi ng accidents wh ile operating
your tractor.
A tractor, the same as your model, passed a stability test
at angles prescribed by ANSI B71.1 - 1972 and B71.1a -
1974 (American National Standards Institute) . This test
was made with a stationary tractor without mounted
equipment and on a perfectly smooth and hard surface .
This
may not be representative of the conditions on
which your tractor will operate .
THE OPERATOR IS THE SOLE JUDGE AS TO THE
DEGREE OF SLOPE ON WHICH THIS TRACTOR CAN
BE SAFELY OPERATED. IF IN DOUBT THAT THIS
TRACTOR CAN BE SAFELY OPERATED ON A PAR-
TICULAR SLOPE, DO NOT OPERATE ON THAT
SLOPE! COMMON SENSE MUST PREVAIL.
- 5 -
Read,
Understand, Obey:
Safety messages are found on the tractor and in the op-
erator's manuals. These l!ll:!.U be understood by the trac-
!QLfmerator to be of value. Be sure that these messages
are
studied before starting and/or operating the tractor by
an operator not familiar with this particular tractor.
learn to OJ:1erate:
Learn
your tractors controls from decals on the tractor
and from instructions in the operator's manual. Practice
how to properly manipulate these controls. Practice must
be done in a flat area, clear of obstacles and bystanders.
Learn your tractors operating characteristics and limita-
tions. These include:
a. amount of engine power available
b. engine governor response
c. tractive abil ity
d.
steering characteristics
e. braking characteristics
f. movement of travel lever
g. forward and reverse ground speeds
h. speed of attachment lift
I. and others
Attempting any operation which approaches or exceeds
the tractor's Iim;'tation is risking an accident .
Know the Terrain:
Know the terrain on which you are working . , Find hidden
obstaCles by walking through and inspecting the area
prior to operating your tractor on it. Mark obstacles, such
as,
rocks, ruts or holes with a 6 ft . long pole and red flag
and illY well clear of these obstacles when operating.
Operate your tractor at a ground speed slow enough to in-
sure complete control at all times .
Place
the transmission in low range and regulate the travel
control lever slowly and smooth Iy to mainta in th is safe
speed .

Always drive in a forward direction when proceeding
downhill. Never drive up a hill. If necessary, back up a
hill
to the desired position. Always back up loading ramps
and tilt bed trailers. If necessary to turn while on a hill,
always
turn downward .
Your judgement, based on operating experience is the
final word in deciding if you should negotiate any given
hill
or slope. If you are in doubt about safety - STAY
OFF THE SLOPE.
Under no circumstances should an inexperienced operator
attempt to use your tractor on slopes or hillsides.
You may encounter some terrain on which your tractor
cannot be operated even if a different piece of equipment
has operated there in the past.
Learn to Compensate for Changes in Operating Condi-
tions:
Adding or removing attachments or ballast (such as wheel
weights
or fluid) change the weight and weight distribu-
tion of your tractor and, therefore, change your tractors
operating characteristics.
Be alert to these changes. Practice operati ng the tractor
after each change has been made.
Adding an attachment (weight) to the rear of the tractor
reduces the weight on the front axle. Adding an attach -
ment (weight) to the front of the tractor reduces weight
on the rear of the tractor. You must add counterweight
to the front if a rear mounted attachment is installed.
You
must add counterweight to the rear if a front moun-
ted attachment is installed.
Tractive
conditions will vary with weather and terrain and
equipment.
Areas wet with dew, rain or snow will be more slippery
than when dry. Areas covered with loose gravel are more
slippery than firm dry ground. Greater stopping distances
are required in these slippery areas.
Spinning rear wheels tend to move the tractor sideways.
The addition of tire chains will provide more traction to
the rear wheels in the forward-reverse direction but less
stability in the sideways direction. Chains will cause more
abrupt starting and stopping.
The final word in safe tractor operation rests on your
judgement.
If in doubt of your safey - STAY OFF TH E SLOPE .
f
- 6 -

INTRODUCTION
This operator's manual is for the Model K40, K44, and
Read this manual before operating your rotary mower.
K46
rotary mower. This operator's manual includes:
See your J I Case dealer for parts or repairs.
a. Safety Rules
b. Installation Procedure
c. Operating Procedure
d. Adjustments The words
"Right, Left, Front and Rear" as used in this
manual indicate directions when you
are in the operator's
e. Maintenance seat in the normal operating position.
ATTACHMENT APPLICATION CHART
MODEL
K40
G
K46
SIZE
TRACTOR MODEL
(Beginning with P.I.N. 9646800 )
38" (965 mm) 210, 220, 222, 442
44" (1115 mm) 222,224,442,444,44~644,646,648
224,444,446,448,644,646,648
48" (1220 mm)
B ELT A PP LICATION CHART *
TRACTOR M OD EL
210 All
220 Before P.I.N. 9656747
220 P.I.N. 9656747 and after
222 Before P.I.N. 9658189
222 P.I.N. 9658189 and after
224
All
442 All
444 Before P.I.N. 9661261
444 P.I.N. 9661261 and after
446,448 All
644 Before P.I.
N. 9698343
644 P.I.N. 9698343 and after
646,648 All
" Belts included with your tractor .
BE LT PART NU MBER
C23358
C23807
C23358
C23807
C23358
C23358
C23809
C23809
C23359
C23359-t-
C23807
C23810
C23808
SPECIAL INFORMATION
TRACTOR MODEL
ALL
Lift links included
with tractor.
INSTALLATION 01\1 TRACTORS
BEFORE PRODUCT
IDENTIFICATION NUMBER 9646800
TRACTOR MODEL
USE KIT
220, 222 H-38
442,444
H-39
NOTE: Part numbers can change.
See your J I Case
Dealer. - 7 -

OPERATING CONTROLS
ATTACHMENT CLUTCH LEVER
The rotary mower is started and stopped with the attach-
ment clutch lever.
See
your tractor operator's manual for correct use of
your tractor controls .
ATTACHMENT LIFT LEVER
The rotary mower is raised and lowered with the attach-
ment lift lever.
HYDRAULIC LIFT
When mowing, put the attachment lift lever in the
"LOWER" position until the lift arms are midway in the
lift link slots.
ATTACHMENT LIFT
HEIGHT SELECTOR
LEVER
See your tractor operator's manual for correct use of
your tractor controls .
HEIGHT SELECTOR LEVER
The cutting height is controlled by the height selector
lever.
TO INCREASE THE CUTTING HEIGHT : Disengage the
pin and pull the height selector lever up.
TO DECREASE THE CUTTING HEIGHT: Disengage the
pin and push the height selector lever down.
TRACTOR TRAVEL LEVER
HIGH-LOW
FIGURE 1 (MODEL 222 WITH MODEL K44 ROTARY MOWER)
OPERATION
1. See the "ADJUSTMENTS" and "MAINTENANCE" 5. Get on and get off the tractor correctly. Never use the
sections of this manual before operating your rotary
lawn mower frame for a step.
mower.
2. See your tractor operator's manual for correct use of
you r tractor controls.
WARNING: Be sure that the at-
3. Learn
to operate the tractor and rotary mower in an
tachment drive clutch is off, the
area
clear of persons and obstructions.
engine is shut off, the key removed
and the blades have stopped spin-
4.
Check the work area for obstructions . Remove the
ning before attempting to clean a
A
small obstructions. Mark the large obstructions so you
plugged discharge chute .
can see
them. Do not hit the large obstructions .
- 8 -

TO GET ON THE TRACTOR FROM THE RIGHT SIDE:
a.
put your right foot on the right foot rest
b. put your right hand on the steering wheel
c.
put your left hand on the seat back
d. swing your left leg between the steering wheel and seat
TO GET ON THE TRACTOR FROM THE LEFT SIDE :
a.
put your left foot on the left f oot rest
b. put your left hand on the steering wheel
c.
put you r right hand on the seat back
d. swing
you r right leg between the steering wheel and
seat
Use the reverse procedure to get off the tractor .
A
CAUTION: Never get 011 01 off
the tractol while the 1ll0WCI IS
luniling
6.
Start the rotary mower by smoothly engagi ng the at -
tachment clutch lever.
A
Be eel tJIIl whoever operdtes till'
Illowel has I ead and undel
stands
the Safety Rules III the flOllt of this
manual.
7. Lower the lawnmower to the cutting position . Make
sure
the lift arms are located in the center of the slots
in the lift links. This permits free movement of the
lawnmower .
On
tractors with hydraulic Iift, do not put the attach ·
ment lift lever in the "FLOAT" position .
MOWING CONDITIONS
Mowing
conditions can be different . You must use the
correct operating methods according to the following
chart :
CONDITION METHOD
1. Short or thin grass. 1. a. move
the height selector lever to the cutting height
needed.
b. move
the throttle lever to a position between 3/4
and full throttle.
c. adjust ground speed as needed.
d. you may decrease engine speed or put the range se-
lector in the "HIGH" position if this doesn 't cause
an
overload to the engine. The engine will become
too hot and the rotary mower will not work cor-
rectly if
the engine is operated with an overload.
- 9 -

CONDITION METHOD
2. Long or thick grass.
3. Wet grass.
4. Rough terrain.
5. Cu
tting near objects.
.:a.. "-...; ' ~ -
6. When grass will not be swept .
7. When grass will be
swept.
8. Wind.
2. a. move the height selector lever to the highest posi-
tion.
b. increase engine speed to the "FULL THROTTLE"
position.
c. reduce ground speed.
d.
cut long or thick grass twice.
e.
operate with the chute facing the cut area.
3.
a. do not cut wet grass.
4.
a. raise the mower into the transport position.
b.
put the gauge wheels in the "M" position .
c.
operate the mower in the transport position to keep
the gauge wheels off the ground.
d. reduce
ground speed.
5. a. use
the right side of the rotary mower.
The cut material will be moved away from the
object.
6. a. operate with chute facing the cut area.
7. a.
operate with chute facing the uncut area.
b.
the grass will be in one strip and can be removed
with a sweeper.
8. turn the tractor so the wind will move grass away from
you.
FIGURE 2
FIGURE 3
. 10 -

ADJUSTMENTS
FIGURE 4
A
CAUTION: Disengage attachment
drive lever, stop engine and remove
key and spark plug vvlre(s) before
making adjustments.
HEIGHT SELECTOR LEVER. (See Figure 4.)
You can adjust the lawnmower height with the height
selector lever.
TO CHANGE THE CUTTING HEIGHT:
1. Raise the lawnmower into the transport position. This
will decrease the weight on the height selector lever.
2. Pull
outward on the pin.
3. Move the lever up or down to the needed height.
4. Push the pin into the hole selected.
GAUGE WHEELS. (See Figure 4.)
SMOOTH TERRAIN
1. Always operate the rotary mower with the gauge
wheels
on the ground. Make sure all weight is off the
lift links for the rotary mower. The lift links must
move freely to cut level and even.
2.
The gauge wheels must not contact the ground while
the lawnmower is in the transport position.
ROUGH TERRAIN
1. Operate the rotary mower in the transport pOSitIOn
and with the height selector lever in the "M" position .
2.
Reduce ground speed.
DRIVE BELT TENSION. (See Figure 5.)
The belt tension is correct when the gap between spring
coils is equivalent to one wire diameter.
TO INCREASE BELT TENSION : Turn the adjusting han-
dle
counterclockwise.
TO DECREASE BELT TENSION: Turn the adjusting
handle clockwise.
IMPORTANT:
Check the belt tension after the first
hour of use. Adjust the belt tension if
necessary. Before each use, check the
belt tension and adjust if necessary.
1) WINO KEY CLOCKWISE
By HAND AS FAR AS
POSSIBLE AND PLACE
ATTACHMENT DRIVE IN
ENGAGEMENT POSITION
DECK DRIVE
PULLEY
2) INSTALL BELT OVER
PULLEYS AND IDLER
PULLE YS AS SHOWN
OOUBLE CHECK THAT
THE BELT IS PAOPERl Y
SEATED IN EACH PULLEY
WITH ONLY ONE 90 DE ·
GAEE TWIST BETWEEN
SUCCEEDING PULLE YS
3) WINO KEY COUNTER .
CLOCKWISE UNTil GAP
BETWEEN SPRING COi lS
SPRING IS EQUIVALENT TO
SPRING WIRE DIAMETER
IDLEA PULLEYS
EY ~LOOSEN
~
II 41 AT PERIODIC INTEA ·
VA lS RECHECK FOR
TI GHTEN l5 CORRECT CLEARANCE
BETWEEN COILS AND
ADJUST AS REQUIRED
This will keep the gauge wheels from contacting the
FIGURE 5
ground.
- 11 -

LAWNMOWER FRONT TO REAR LEVEL. 3. Measure
the distance from the blade ends to the level
(See Figure 6.)
surface. Make sure you measure as near the blade end
Smooth cutting and minimum horsepower consumption
are a result of a level rotary mower.
BEFORE STARTING THE PROCEDURE:
1. Put the tractor and rotary mower on a level surface,
like a concrete floor.
2.
Put the heightselector lever in the "M" position.
3. Lower the lawnmower to the cutting position.
TO RAISE THE FRONT OF THE LAWNMOWER:
1. Loosen
the rear nuts that hold the leveler links.
2. Turn the two front nuts rearward an equal number of
turns.
TO LOWER THE FRONT OF THE LAWNMOWER:
1.
Loosen the front nuts that hold the leveler links.
2.
Turn the two rear nuts forward an equal number of
turns.
TO CHECK FOR LEVEL :
1.
Rotate the blades until they are parallel to the trac-
tor frame from front to rear.
2. Make
sure the nuts on the leveler links are tight.
as possible.
The lawn mower is level when both front and rear blade
measurements are the same. The front end may be 1/8"
(3 mm) lower than the rear end. Never permit the rear
end to be lower than the front end. This will cause more
than normal power consumption.
LAWN MOWER SIDE TO SIDE LEVEL (See Figure 6.) I
Make sure the problem is not the air pressure in the tires.
The air pressure in both tires must be correct and equal.
Lawn
mower side to side level is adjusted at the factory.
If additional adjustment is necessary:
1.
make sure the lawn mower is level "front to rear"
2. move the tractor and lawn mower to a level surface
3. move
the height selector lever to the "M" position
4. lower the lawn mower to the cutting position
5. Ioosen the two bol ts that fasten the guage wheel car·
rier
to the lawn mower
6. raise or lower the carrier as required. Make the holes
larger if additional adjustment is needed.
7. tighten the bolts
ADJUST NUTS REARWARD TO
RAISE FRONT OF MOWER
FIGURE 6
-12 -

MAINTENANCE
A
CAUTION: Disengage attachment
drive lever, stop engille and remove
key and spark plug wlle(sl before
making adjustments
BLADE BOLTS. (See Figure 7.1
Before you operate the lawn mower for the first time,
check the bolts holding the blades. The bolts must be
tight. After the first eight hours of operation, check the
bolts again. Each time the blades are removed, install new
lock washers under the bolt heads. Tighten the bolts and
check again after 8 hours of operation .
BE.
NT BLADES. (See Figure 7.)
Oleck for a bent blade before you install the lawn mower
on the tractor. Check the blades for damage after you hit
foreign material.
The ends of the blades must be aligned horizontally. A
1/8" (3 mm) difference is acceptable.
Align two blades as shown in Figure 7. Check all six ends
in a similar way. Replace all bent blades.
Bent blades will leave strips of grass not cut.
MOWER GAUGE WHEELS. (See Figure 8.)
Two acceptable methods of lubrication :
a.
lubricate the gauge wheels every eight hours of use.
Remove the gauge lNheels to apply grease to the
bushings.
b.
Apply oil every four hours to the bolts and bushings of
the gauge wheels. You do not need to remove the
gauge lNheels to apply oil. Tilt the lawn mower chassis.
let the oil flow into the bushings.
MOWER
BLADE BOLTS
TIPS MUST BE WITHIN
1/8" (3 mm) OF SAME
HORIZONTAL LINE.
FIGURE 7
BElT REPLACEMENT ON THE lAWN MOWER CHASIS.
(See Figure 8.)
1. Remove the chassis belt guard.
2. Release the idler pulley tension . Put a 9/16" wrench
on the nut which holds the idler pulley. Rotate the
wrench towards the front of the chassis.
3. Remove the old belt.
4. Put the new belt around the three spindle pulleys and
idler pulley.
5. Manually rotate the belt. Check for free movement of
the belt. Make sure the idler pulley has tension .
6. Install chassis bel t
guard.
FIGURE 8
K44 MOWER WITH BELT GUARD REMOVED FOR A CLEAR VIEW
. 13·
(

SHARP BLADES. (See Figure 9.)
Stop the engine. Wait for all motion to stop . Be careful
while you check the lawn mower blades. After each job
check for damage or blade wear.
A blade that is worn can give a rough cut and brown areas
of grass can resul t.
See Figure 9
for the correct angle of the cutting edge.
The cutting edge must be at least 3-1/2" (90 mm) long.
",;,.;: · >\7:;;;· ,~,;; ~
lk5"itig: :,~ ·· ¥:\ .~ 'ii'
CORR ECT ANGL E WRONG
ANGLE TO
OF SHAR PENED
SHAR PEN CUTTING
CUTTING EDGE EDGE
FIGURE 9
NOTE: The K46 lawn mower blades have different
lengths. The center blade is 1" (25 mm) shorter
than the outsiqe blades.
Make
sure the shorter blade is installed on the
center spindle.
Manually
rotate the blades after installation .
Check for correct clearance th rough one com-
plete turn.
After grinding a blade, check for balance . Use a balance
tool as shown . A balanced blade will stay in a horizontal
posi tion.
FIGURE 10
CAUTION: Unbalanced blades are
CLEANING THE LAWN MOWER CHASSIS
Large amounts of grass in the blade chassis will:
1. cause more than normal horsepower consumption
2. cause an obstructi on
3. cause a bad cutting job
4. cause corrosion
5. damage bearings or seals
rn
DANGER: Spinning Blade. Keep
clear. Contact can injure.
Stop the engine. Wait for all motion to stop. Use cau-
tion when you check the lawn mower chassis. Periodical-
ly
check and clean the chassis. Remove the grass wound
between the blade mounting plates and spindle housings.
TRACTOR AND ENGINE MAINTENANCE
Complete instructions for tractor and engine mainten-
ance are in your tractor operator's manual.
CHECK AND CLEAN DAILY:
1. Fins of the heat exchanger.
2. Air intake screen of the engine.
3. Air cleaner element.
During dust or dry conditions use a precleaner. The pre-
cleaner fits over the air cleaner element and gives the ele-
ment a longer life.
The precleaner can be washed with detergent and water.
See Figure 11.
PRECL~~,.~
A
FIGURE11
a hazard and will cause premature
wear and failure of bearings and
TIRE AIR PRESSURE
spindles. If the blades cannot be
balanced by resharpening, replace Keep
the tires at the correct air pressures. See your trac-
them with new ones.
tor operator's manual.
-
14-

INSTALLATION
ASSEMBLY 3. Use
cotter pins to fasten the lift links to the mounting
bracket. See Figure 13.
1. Remove the components from the box. Check for
damage or missing parts. NOTE: On Model
446 and 448 tractors, the offset lift
link is fastened to the R.H. side of the tractor.
NOTE: Do not assemble the mounting bracket to the
lawn mower chassis as shown in Figure 13. It is
2.
The belt and lift links for your mower are included easier to first install the mounting bracket on
with your tractor. the tractor.
NOTE: Belt and I ift links included with tractor.
~----- MOUNTING BRACKET
/
FIGURE 12 MODEL K44 ROTARY MOWER· DISASSEMBLED
. 15 .

MOUNTING BRACKET
FIGURE 13 MODEL K44 ROTARY MOWER -ASSEMBLED
NOTE: DO
NOT ASSEMBLE MOUNTING
BRACKET TO MOWER CHASSIS AS SHOWN.
REFER
TO STEP 3 - ASSEMBLY.
INSTALLING
1. Put the tractor on a level surface like a concrete floor.
2. Completely turn the belt adjuster handle counter-
clockwise. This will permit mounting clearance at the
front axle. See Figure 14_
TIGHTEN BE LT
FIGURE 14 BELT ADJUSTMENT
-16 -

3. See Figure 15. Put the mounting bracket under the
front of the tractor. Raise and install the mounting
bracket on the mounting pins. Align the holes in the
,
mounting bracket with the "snap fast pins". Release
the "snap fast pins" to hold in place.
NOTE: Model
644, 646 and 648 tractors do not have
"snap fast
pins". Use two clevis pins and two
safety pins.
4. Completely lower the lift arms on the tractor. On all
models except the
446 and 448, put the lift links on
the inside
of the lift arm. See Figure 15. Put a plain
washer on the clevis pins. From the inside install:
a. through the slot in the lift link
,
b. throught he front hole in the lift arm
c. fasten on the outside with a safety pin
On Model 446 and 448 tractors the left lift link is install-
ed using the above procedure.
Use the offset lift link on the right side.
To install:
a. put lift link on outside of lift arm
b. install clevis pin from the inside
c. fasten with washer and safety pin
5. Raise the lift arms into the transport position.
TRACTOR ANCHOR PIN
OFFSET LIFT LINK INSTALLATION
FOR MODEL 446 AND 448 TRACTORS
FIGURE 15 MOUNTING THE K44 MOWER MOUNTING BRACKET
-17 -

.-
6. Put the height selector lever in the "L" position. From
CAUTION: Shut off engine, allow
the right side, sl ide the lawnmower under the tractor.
engine to cool and remove key and
Align the mounting tabs with the mounting bracket. spark plug wire(s)
before replacing
mower drive belt.
A
Raise
the lawn mower to the "M" position. Lower the
mounting bracket to the lawn mower chasis. See Figure
16.
7.
Fasten the leveler links to the mounting bracket as
shown in Figure 16 .
8.
Connect the tab on the lawn mower to the mounting
bracket . Use two clevis pins and safety pins.
NOTE: Manually
lift the lawn mower to align the brack-
et and tab holes.
9. Before
you install the belt:
a. stop the engine
b. remove
the ignition key
c.
permit the engine to cool
d. engage
the attachment drive clutch (to allow belt to
pass)
e. raise
the hood and remove the spark plug wire
10.
To install the belt:
a. pull
the belt up in front of the idler pulleys
b. pull the belt up and between the heat exchanger
and the fan
c. put the belt on the pulley of the attachment drive
clutch
d. turn the belt adjuster lever clockwise to allow the
belt to go around the idler pulleys
e. align the belt on the idler pulleys
f.
put the belt on the pulley of the lawn mower
11. Make sure the belt is correctly located on each pul·
ley.
See Figure 5.
12.
Turn the adjuster lever counterclockwise to tighten the
belt. The belt tension is correct when the gap between
spring coils is equivalent to one wire diameter.
IMPORTANT: Before operating the lawn mower, read
and follow the Adjustments and Main-
tenance sections of this manual.
FIGURE 16 MOUNTING THE K44 MOWER CHASSIS
- 18·

TROUBLESHOOTING CHART
LAWN MOWER NOT CUTTING EVEN OR LEAVING A STRIP OF GRASS
POSSIBLE CAUSE COR RECTION
1.
Obstruction in bottom of mower chassis.
1.
Remove chassis and clean.
2. Blades
not sharp . 2.
Cutting edge must be sharp and at least 3-1/2" (89
mm) long.
3.
Engine speed too slow .
3. Adjust engine speed to 3600 RPM.
4.
Travel speed too fast.
4.
Decrease travel speed.
5.
Grass too long.
5.
Cut twice. First at highest position
then at needed
height.
6. Drive
or chassis belt slippage. 6.
Check belts. Adjust tension or replace .
7.
Attachment drive clutch slippage.
7. Adjust or repair attachment drive clutch.
LAWN MOWER CUTS HIGH ON ONE SIDE
POSSIBLE CAUSE CORRECTION
1.
Adjust side to side level (first check for equal tire pres-
1. Lawn
mower chassis not level side to side. sure).
TOO MUCH POWER CONSUMPTION AND CUTS BADLY
POSSIBLE CAUSE
CORRECTION
1.
BI ades not sharp.
1.
Make blades sharp.
2. Lawn
mower chassis not level front to rear.
2.
Chassis must be level or no lower than 1/8" (3 mm) in
front (first check air pressure in tires).
3.
Blades
installed upside down . 3. Install
correctly. Blades rotate counterclockwise. Cut-
ting edge must lead.
4.
Blade
not straight.
4. Replace blade.
CENTER BLADE ONL Y CUTTING
POSSI BLE CAUSE
CORRECTION
1. Chassis
belt broken.
1. Replace belt.
The J I Case Company reserves the
right to make improvements in
design
or changes in specifications
at any time without incurring any
obligations to install them on units
•
previously sold.
Printed in U.S.A.
11-81-0G-6500
-19 -

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