Case H40 User manual

!*Hf
Operators Manual
H40, H44 and H46
Rotary Mowers
Win. Form No.9-35292

The Model H40 Rotary Mower is designed
to mount on model 220 and 222 compact
tractors above serial number 9646800.
Model H44 Rotary Mowers mount on models
220, 222, 442 and 444 tractors above serial
number 9646800. The model H46 Mower
will mount on the same tractors as the
model H44. However, it is not recommended
for the model 220. These mowers can be
mounted on Model 220 and 222 tractors
prior to serial number 9646800 by using the
Model H3B Adapter Kit. The Model H39
Adapter Kit is required to mount these
mowers on Model 442 and 444 compact
tractors prior to serial number 9646800.
The Adapter Kits are available as optional
equipment"
Model H44 Mowers, serial number C30B4B
and above and H46 Mowers, serial number
D30733 and above will mount on the Model
644 Wheel I-oader without any changes as
e:rplained in the Installation section of this
manual" Mowers prior to these serial
numbers require two new lift links, part
number Cl831 5, which canbe orderedthrough
service parts"
LIFT LEVER
FORE-AFT
INTRODUCTION
DECK LEVER
ADJUSTMENT LINKS
L IFT
L INKS
Model H44 Mowers, serial number C30848
and above and H46 Mowers, serial number
D30733 and above will mount on the Model
646 Wheel Loader by using Drive Belt, part
number C13184, available through service
parts; Mowers prior totheseserialnumbers
also require two new lift links, part number
C1831 5, which can be ordered ttrrough service
parts"
This manual covers recommended operating
procedures, safety suggestions, adjustments,
maintenance information, and installation in-
structions. Read this manual carefully be-
fore operating your rotary mower. Your
J I Case Compact Tractor Dealer is well
qualified to answer any further questions
you might have concerning your rotary
mower. AIso, if the need should arise,
his Service Department with factory trained
technicians, genuine Case replacement parts
and the required facilities is in a position
to provide proper repairs in the shortest
time possible.
TRAVEL LEVER
DEPTH CONTROL
KNOB
-
HIGH-LOW
RANGE LEVER
SNA P
PINS
BELT TENSION
ADJUSTING CRANK DECK BELT
COVERS GAUGE
WHEELS
Figure 1.
2
HEIGHT SELECTION?

The definitions "Right, Left, Front and Rear"
as used throughout this manual relate to the
tractor and rotary mower as the operator is
seated facing forward in the normal opera-
ting position on the tractor.
Always make certain the tractor attachment
drive clutch is disengaged before starting
the engine and when transporting the rotary
mower.
ti
I
$
The principle components and controls of
your rotary mower are identified in Figure
1 with the same description used through-
out this manual.
AIl controls are convenienily located near
the operator's position on the tractor. The
mower blades are placed in motion by en-
gaging the tractor attachment drive clutch
Iever. The desired mowing height can be
quickly adjusted with the height selection
OPERATING CONTROLS
OPERATING SAFETY SUGGESTIONS
knob. See inset photo, Figure 1. Generally
best performance is obtained with the trans-
mission in 'Iowtt range and the engine run-
ning approximately 3/4 throttle. The throttle
should be set as low as practical to obtain
maximum fuel economy but high enough to
prevent engine lug-down or laborwhichcould
cause overheating and poor mowing. Ad-
just the tractor ground speed with the Travel
Iever according to your mowing conditions.
7.
B.
9.
10.
11.
12.
13.
14"
15.
16.
1.
,.
3.
A
LOOK FOR THIS SYMBOL
TO POINT OUT IMPORTANT
SAFETY PRECAUTIONS
Regard your rotary mower as a piece of
power equipment and be surethismanual
is read and understood by all who op-
erate it.
Clear the lawn or area to be mowed of
sticks, stones or any hard objects which
could come in contact with the blades
and be hurled out the discharge opening.
Do not permit children or pets in the
area while mowing.
KEEP FEET AND HANDS AWAY FROM
DISCHARGE OPENING AND MAKE NO
REPAIRS UNLESS BOTH THE TRACTOR
ENGINE AND PTO ARE SHUT OFF.
Fill gas tank out of doors and avoid
spiliing gasoline. Do not fill tank with
gasoline while smoking or while engine
is running.
Never allow children or young teen-
agers to operate the tractor and rotary
mower.
Maintain your tractor and rotary mower
in top operating condition.
Never get on or off the tractor while
mower is running.
Operate in "Low" range and use greater
caution on steep slopes or inclines.
Be sure you know how to stop the trac-
tor and mower at a moments notice.
Give complete and undivided attention
to the job at hand.
Stop the engine and disengage theattach-
ment drive when tractor is unattended.
Disengage attachment drive clutch when
someone approaches.
Do not allow anyone other than the op-
erator to ride on the tractor.
Never direct the mower dischargg. at
people, pets, windows, or cars.
Disengage the attachment drive c$cn
whenever mower is in transpofr or
liften position.
STOP AND INSPECT THE MOWER
FOR DAMAGE IMMEDIATELY AFTER
STRIKING A FOREIGN OBJECT AND
REPAIR DAMAGE BEFORE RESTART.
ING AND OPERATING THE MACHINE.
5.
6.
L7.

OPERATING METHODS AND TIPS
1.
2
Keep mower blades sharp andbalanced as
covered in Adjustments and Maintenance
Section.
Operate engine at approximately 3/4
throttle and regulate the ground speed
Travel Lever according to mowing con-
ditions. As a general rule, set the
throttle as low as practical to obtain
maximum fuel economy but high enough
to avoid engine lug-down or labor which
could cause overheating. Unless grass
is unusually light, always operate in
rrl€w?? speed range.
If grass is heavy and higherthannormal,
results can be improvedby mowing twice.
Make the first cut with the mower set
higher than normal; then repeat with the
mower set at desired finished cutheight.
When mowing heavy grass, always dis-
charge clippings away from the uncut
area.
Figures 2 and 3 illustrate two systems
for mowing. If the grass is high or
heavy, always mow to throw the clip-
pings away from the uncut area, Figure
2. If the grass is tight and more thor-
ough mulching is desired, discharge the
clippings toward the center of the uncut
area, Figure 3. When mowing in this
manner, a final strip of mulched clip-
pings about three to four feet wide wiII
remain near the center of the lawn. This
can be easily raked up to leave a weII
groomed appearance.
Trimming will be neater and closer by
using the right side of the mower since
the clippings will be discharged away
from the object. Also the safety shield
over the discharge opening prevents
mowing as close to objects.
Do not step on the mower deck when
getting on or off the tractor. If mounting
the tractor from the right side, place
your right foot on the right foot rest,
your right hand on steering wheel and
left hand on the seat back and step onto
the tractor, swinging your left foot
through between the steering wheel and
seal"
When mounting from the left side, start
with your left foot on the left foot rest,
your left hand on steering wheel and
right hand on seat back and step onto
tractor swinging your right foot through
between steering wheel and seat.
5.
6.
3.
4.
Figure 2. Figure 3.

T't
I
Dismount the tractor using the reverse
of the above procedures.
.1G5.1,1R' PEALER. IVE
'TO?IE? THE MANUAI,'
?. The tractor mechanical or hydraulic lift
lever is used to raise the mower into
transport and to lower it into cutting
ADJUSTMENTS AND
l. Height Selection Lever: See Figure 4
The mower cutting height is adjustable
trom L-1/2,,to \-Lf 2" with 1/2"settings
available in between. To change the
cutting height, pull outward on the se-
Iection knob, move the lever up or down
to desired height setting and push back
into matching hole. Relieve the weight
on the selection lever by raising the
mower into transport position before ad-
justing the cutting height. Always op-
erate the mower with the gauge wheels
on the ground and all weight off the
mower lift links to obtain a level and
uniform cut.
mPQPfAtl when the cutting height is
changed, readjust the
Depth Control Knob as ex-
plained in the following
paragraph for proper
mower flotation.
FORE-AFT
DECK LEVER
ADJUSTMENT LINKS
L IFT
LEVER
EIGHT SELECTION
KNOB
Figure 4"
position. A slight putling pressure on
the mechanical lever will permit the re-
lease button to be more easily depressed.
The. "Height Selection" and "Depth Con-
trol" settings are explained in the AD-
JUSTMENT AND MAINTENANCE sec.
tion which follows.
Engage tractor and mower drive systems
smoothly - not quickly or jerky.
Be certain whoever operates the mower
has read and understands the preceding
"Operating Safety Suggestions. "
MAINTENANCE
Figure 5
DEPTH CONTROL
KNOB
8.
9.
-g
DEPTH CONTROL
ROD
f,
tl
ii
i\^'.I
J DEPTH
g-tNDtcAroR
€r'^t9 PLArE
LIFT
L EVER
DEPTH CONTROL
D EPTH
INDICATOR
Figure 6.

b
2. Mower Flotation Adjustment: See Fig-
ures 4, 5 and 6.
Adjust the mower for proper flotation
a.fter the Height Selector Lever is set
at the desired cutting height. With the
tractor and mower on a level surface,
turn the Depth Control Knob up or down
as necessary to "center" the hanger
pin in the mower lift link flotation slot
with tfie mechanical or hydraulic lift
Iever lowered as far as possible. Ad-
justed in this manner the mower is free
to float up and down over the ground
contour independent of the tractor.
l0fE When turning the Depth Control
Knob, the lift lever must be in the
raised (transport) position so the
lift lever stop plate is not in con-
tact with the depth control rod.
You may find it useful for future
reference to mark the position of
the depth indicator on the decal
when the depth control rod is cor-
rectly adjusted to your desired
cutting height.
3. Mower Blade Bolts:
Before operating the mower for the first
time, check the bolts holding the blades.
THEY MUST BE TIGHT. After the first
8 hours operation, check them again.
Whenever the blades are removed, it
is a good practice to install new lock-
washers under the bolts, and again check
tightness after next B hours operation.
TURN COUNTERCLOCKWISE TO
BELT AND TO INSTALL OR REMOVE
ON MODEL 22O OR 222 TRACTORS
Figure 7.
TIGHTEN
BRACKET
Drive BeIt Tension: See Figure ?
The drive belt is properly tensioned
when the two front idler putleys are
in line (parallel with each other).
Check and adjust the tension on a new
belt after the first 20 minutes and the
next hour of mowing since it is normal
for a belt to stretch slightly during its
initial run-in period. To increase the
belt tension, turn the adjusting crank
in a counterclockwise direction while
facing the front of the tractor. It is
also necessary to turn the adjusting
crank counterclockwise as far as it will
go in order to attach or remove the
mounting bracket from model 220 or
222 tractors. To decrease the belt
tension or to install or remove the belt,
turn the adjusting crank clockwise.
PRECLEANER
DRY ELEMENT
Figure g.
5. Engine Maintenance:
Complete tractor and engine maintenance
instructions are outlined on pages 72
and 13 of your tractor Operator's Man-
ual. When mowing, give particularatten-
tion to the areas which are affected by
grass accumulation. Check and brush
off the engine air intake screen and
heat exchanger fins DAILY. Also check
and clean the engine air cleaner element
daily as e:rplained on page 21 of your
tractor manual. If mowing under par-
ticularly dry or dusty conditions a "Pre-
cleanerr" part number KO23142L, is
available through your J I Case Dea1er
which fits over the regular element.
See Figure B. This precleaner can be
washed out with soap and water as nec-
essary which will extend the life of the
dry element furnished with the tractor.
4.
+
ADJUSTING
CRANK

1ffi "l''lffiffi
ADJUST NUTS REARWARD
o RArsE FRoNT oF MowEnmffiffi
Wffiili*,"" " '".r *& ;" :"":it"':
:ADJUST NUTS FORWARD TO
LOWER FRONT OF MOWER
: r.::.:::t:r,:d!ffii&
FORE.AFT
GAUGE
WH E ELS Figure 9.
6. Mower Fore-Aft Leveling Links: See
Figure 9
These links are adjusted at the factory
for correct mower deck level. Clean
cutting and minimum horsepower con-
sumption are dependent upon the mower
being level, fore and aft. If readjust-
ment should become necessary, Iocate
the tractor and mower on a level sur-
face and place the Height Selector Lever
in the z-Lf 2" setting before making ad-
justments. To raise the front of the
mower, first loosen the outer nut on
each link and then equally turn the in-
ner nuts rearward" To lower the front
IDLER PULLEY
of the mower, loosen the inner nut on
each link and turn the outer nuts fore-
ward. Check blade heights as close to
the front and rear edges of the mower
as possible. Distance betweentheblades
and the level surface should be the same
at both front and rear edges of mower"
7" Mower Gauge Wheels: See Figure g
Remove the gauge wheels after each
10 hours of mowing and lubricate the
bushings and axle bolts with chassis
grease.
l0lE A" an alternate to grease the wheels
can be oiled each four hours of op-
eration. Make sure the oil pene-
trates to the inside of the bushings
by holding the deck at a slanted
angle while lubricating.
8" Mower Deck tselt Replacement: See
Figure 10
The deck beit is automatically tensioned
by a spring loaded idler pulley and does
not require adjustment. If a new belt is
installed, place it around the three
spindle pulleys as illustrated. Place a
9f76" box wrench over the hex nut on
the idler pulley and pivot the pulley
towards the front of the mower until
the belt can be easily placed over the
back side of the idler as shown. Check
to make sure the belt is not rolled or
twisted before replacing covers.
-i
l
t,
a
,l
Figure 10.
7
l
I
l
l
1l
lr
I
HEX NUT

fg.'ErgF.-?'-. I
CORRECT ANGLE
OF SHARPENED
CUTTING EDGE
WRONG ANGLE TO
SHARPEN CUTTING
EDGE
Figure 11"
9. Sharpening Blades: See Figure 11
Check the mower blades periodically for
nicks or dullness. Damaged or duII
blades can cause a shattered rather than
clean cut and brown areas may develop.
The left picture, Figure 11, illustrates
the correct angle at which to resharpen
the blade cutting edges. If the cutting
edge is sharpened at a blunt angle as
shown in the right picture, the grass
may also be shattered rather than
cleanly cut.
10. Balancing Blades: See Figure 12
After a blade is sharpened, check it for
balance by inserting a dowel or bolt in
the center hole and place between two
Ievel edges as shown in Figure 12. A
balanced blade wiII center itself so the
cutting edges are parallel withthe edges.
DOWEL OR BOLT
BLADE
CUTTING
EDGE
Figure 12.
enuflfiX Unbalanced blades are a hazard
and will cause premature wear
and failure of bearings and
spindles. If the blades cannot
be balanced by resharpening
them, replace with new blades.
11. Check and clean out the insideofthedeck
housing periodically. Remove any grass
wrappings between the blade mounting
plates and the spindle housings. Grass
wrappings, iJ allowed to accumulate, may
work their way under the bearings and
damage the seals. Excessive grass ac-
cumulation in the deck housingwillwaste
engine horsepower and cause plugging
and streaking as well as corrosion.
12. Maintain the tires at equal and recom-
mended pressures. Refer to tractor
Operator's Manual.

INSTALLATION
J\.
B.
Iocate tfre tractor on a level surface.
Check tires for equal and recommended
pressures as outlined on page ? of the
tractor operator's manual.
Before installing the mower, lay out and
check the individual components. The
Model H44 or H46, 44" or 48" mower
is illustrated in Figure 13 and includes
an extra drive belt and lift links to per-
mit their installation on either high or
low clearance tractors without separate
mounting kits. Since the Model H40,
38" mower is only intended for the
Modei 220 or 222 tractors, it does not
include the extra belt or links.
lQfE Figure 13 ilustrates the Modet H44
mower, serial number C30g4B and
above and the H46 mower, serial
number D30733 and above. Model
H44 and H46 mowers, prior tothese
serial numbers are shipped with
three instead of four lift Iinks and
the long links have two short slots
instead of one long slot.
C. The following installation sequence is the
same whether the tractor is equipped
with hydraulic or mechanical lift.
[/OUNTING
BRACKET
LIFT LINKS FOR 220,
222,644 AND 646 TRACTORS
/\
r*a
M&
NOTE: ALL FOUR LIFT LINKS ARE PACKAGED LOOSE.
ILLUSTRATION SHOWS THE LONGER LINKS INSTALLED
FOR MOUNTING ON MODEL 442 AND 444 TRACTORS.
Figure 13.
I
[/|OWER DECK ASSEMBLY
DR IVE BELT(S)
LIFT LINKS FOR
442 AND 44
TRACTORS

I
l
b) Model H40 mowers.
A30214 and aJter.
Model H44 mowers,
C30848 and after.
Model H46 mowers,
D30?33 and a-fter.
serial number
serial number
serial number
Figure 14"
1. a) Model H40 mowers
number 430215.
Model H44 mowers
number C30848.
Model H46 mowers
number D30733.
The mounting bracket for the 38"
Model H40 mower is completely pre-
assembled at the factory. There are
two offset lift links packaged loose
with the 44" model H44 and 48" model
H46 mowers. See Figure 14. If
the mower is being installed on Model
220 or 222 tractors, assemble the
shorter of the two offset links to the
outside of the left hand side of the
mounting bracket with the clevis pin
and cotter pin furnished. If installing
the mower on Model 442 or 444 trac-
tors, assemble the longer offset link.
Note that the link is assembled with
the off-set outward.
The Model H40 mower is shipped with
only two straight lift links and one
drive belt since it is only recom-
mended for the 220 and 222 tractots
due to width" Model H44 and H46
mowers are shipped withfour straight
lift tinks and two drive belts so they
can be mounted on both high and low
clearance tractors. See Figure 13
for identification of the lift links.
Model 220, 222, 644 and 646 - As-
semble the two shorter links to the
mounting bracket and secure with
cotter pins. The slotted end of the
links are to be later connected to
tractor lift levers.
Model 442 and 444 - Assemble the
two longer links to the mounting
bracket as shown in Figure 15 and
secure with cotter pins.
SNAP
PIN
DJUSTING
CRANK
COUNTE
Figure 16.
Before attaching the mounting bracket
on Model 220 or 222 tractors, turn the
adjusting crank counterclockwise as far
as possible to provide mounting clear-
ance at the front axle. See Figure 16.
This step is not required for the Model
442, 444, 644 and 646 tractors"
prior to serial
prior to serial
prior to serial
,"--ADJU
tcR
RCLOCKW ISE
l
{1
1
I
I
2
Figure 15.
10