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SERVICE AND ADJUSTMENT
HOW TO ADJUST
THE BLADE
DRIVE SYSTEM
_
ARNING: To prevent an injury, the blade rotation
control must operate correctly.
In normal usage, the blade drive system will not require an
adjustment.
However, if the cutting performance decreases or the
quality of cut is poor, make the following changes.
1.
Start the engine. Make sure the throttle control is in the FAST
position.
2.
Release the blade rotation control.
3.
4.
5.
6.
Turn the cable adjuster one turn in the direction shown in
Figure 21.
Engage the blade. See "How To Engage The Blade". Mow
for a short distance and again check the quality of cut. If nec-
essary, turn the cable adjuster
one more turn to shorten the
cable.
Repeat the adjustment and check the quality of cut.
If the quality of cut does not improve, replace the mower
drive belt. See "How To Replace The Mower Drive Belt". If
replacing the belt does not correct the problem, take the unit
to a Sears service center.
7.
8.
Release the blade rotation
control.
Stop the engine. Dis-
connect the wire from the spark plug.
Check the operation of the blade brake. Rotate the pulley
with your hand. Make sure the brake pad is pressed tightly
against the pulley (Figure 22).
_
WARNING:
If the brake pad does not press tightly
against the pulley, take the unit to a Sears service
center.
g.
10.
11.
12.
Move the blade rotation
control to the ENGAGE position.
Check the pad for the blade brake. If the pad is excessively
worn or damaged, replace the brake pad assembly. Correct
replacement parts and assistance are available from a Sears
service center.
Attach the wire to the spark plug and start the engine. Mow
for a short distance and again check the operation of the
blade drive system.
If you replace the mower drive belt, turn the cable adjuster
in the OPPOSITE direction as shown in Figure 21. Turn the
cable adjuster until all the adjustment that was set with the
old belt has been removed.
When you move the blade rotation
control to the
DISENGAGE
position, all movement will stop within three
seconds. If there is movement of the belt or the blade contin-
ues to rotate, engage and disengage the blade rotation
control
five times to remove any excess rubber from a new
mower drive belt. If you need assistance, take the unit to a
Sears service center.
Drive Control
Cable Adjuster
Figure 21
Brake Pad
F-020433M
17
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