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ADJUSTING AND OPERATING
STARTING THE MOWER
With the engine operating at idle speed,
slowly engage the power take-off clutch lever.
Advance the throttle to full throttle.
STOPPING THE MOWER
Disengage the power take-off clutch lever
(to the rear position) and reduce the engine
speed.
LEVEL ADJUSTMENT
Note: Check the tires for proper inflation
before making a level and height adjustment.
To adjust the mower for level, first place
the tractor on a level surface, preferably a
hard surface area such as a garage floor or
sidewalk. Set the lift handle stop (No. 5 in lllust.
41) for the desired mowing height. To set the
lift handle stop raise the mower to the desired
cutting height and adjust the stop so it contacts
the lift handle. Then tighten the bolt securely.
The mower can then be raised to cross an ob¬
stacle. etc. . and lowered, maintaining the pre¬
set height.
Set the gauge wheels above the lever surface
(gauge wheels must not support the mower).
Side to Side
Lower the mower almost to the surface
making sure the gauge wheels do not touch.
Add 13/32 X 13/16 x . 065-inch flat washers.
as many as required, under the left or right
mower support bracket (No.
2
in lllust. 41) so the
height from the top of the mower housing to
the surface is equal on each side. Then tighten
support brackets securely.
Front to Reor
Push the tractor lift handle to the stop to
lower the mower to the mowing height. Rotate
the center and one outer blade so they are par¬
allel and pointing straight to the front and rear.
Then adjust the left and right support clevises
(No. 3 in lllust. 41) so the front edge of the center
blade is level with the back edge of the outer
blade. If the mower is to be used for close cut¬
ting of fine lawns, the front tip of the center
blade should be set at the same height as the
rear tip of the outer blades.
Note: If mower is not level, it will adversely
affect the performance.
HEIGHT OF CUT
the lock button (No. 7 in lllust. 41) located in front
of the handle.
To disengage the lift handle from the "Un¬
latched" or "Float" position, pull the handle
back slightly and depress the release button.
This releases the lock button.
For tractors equipped with the electric lift,
raise the end clevis locking clip up into the
unlocked position. See page 17.
V-BELT
Main Drive Belt
The main drive V-belt is adjusted for tension
by the V-belt tension bolt (No. 10 in lllust. 41).
Tighten the lock nut to increase belt tension and
loosen the lock nut to decrease the belt tension.
When installing a new belt, the initial ten¬
sion is obtained by adjusting the belt so the
distance (No. II in lllust. 41) measures 3-1/2-
inches from the center of the pulley (at the ex¬
tension spring) to the inner face of the front
hanger cover (No. 12).
The main drive belt is properly tensioned
when the extension spring coils are spread ap¬
proximately 1/16-inch.
When belt slippage occurs or spring coils
touch, readjust to 1/16-inch spread.
Note: When installing a new belt always check
the condition of the pulleys and if they are not
in satisfactory condition, replace them with
new pulleys available at your International
Harvester dealer.
To install or remove the belt, pull the lift
handle to the rearward position and disconnect
the power take-off clutch lever rod^or loosen
clutch lever bolt. This will provide sufficient
clearance between the wear and thrust buttons
on the clutch. See lllusts. 16, 16A,and 16B.
Spindle Drive Belt
The spindle drive belt tension is maintained
by a spring-loaded belt tightener and requires
no adjustment.
CLEANING
Set the lift handle stop for the desired height
Clean the underside of the mower at the end
of cut. To lock the handle in the float position
of the mowing season and when the build-up of
depress the release button (No. 6) and press in
cut material on the underside is noticed.
42
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