MAINTENANCE
23
F-050746L
HOW TO ADJUST THE BLADE ROTATION CONTROL
WARNING: To prevent an injury, the blade rotation
control must operate correctly.
In normal usage, the
blade rotation control
will not require an
adjustment. However, if the cutting performance decreases or the
quality of cut is poor, make the following changes.
1. When you mow, make sure the throttle control in in the FAST
position.
2. Move the
blade rotation control
to the
DISENGAGE position
(Figure 14).
3. Stop the engine. Disconnect the wire from the spark plug.
Blade Rotation Control
Engage Position
Disengage
Position
Figure 14
4. Check the blade(s). Keep a sharp edge on the blade(s). A blade
that is not sharp will cause the tips of the grass to become
brown.
5. Disconnect the
blade drive spring
from the
blade control
rod
. Move the
blade drive spring
to the
middle hole
(Figure 15). This will increase the tension on the
mower drive
belt
.
Figure 15
Blade
Control Rod
Blade Drive Spring
Top Hole (New Belt)
Middle Hole
Bottom Hole
DISENGAGE POSITION
6. Attach the wire to the spark plug. Mow for a short distance and
again check the quality of cut. If necessary, move the
blade
drive spring
to the
bottom hole
.
7. Again check the quality of cut. If the quality of cut has not im-
proved, 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 an authorized service center.
8. Move the
blade rotation control
to the
DISENGAGE posi-
tion.
Stop the engine. Disconnect the wire from the spark plug.
Check the operation of the
blade brake
. Rotate the pulleys with
your hand. Make sure the
brake pads
are pressed tightly
against the pulleys (Figure 16).
WARNING: If the brake pads do not press tightly
against the pulleys, take the unit to an authorized
service center.
Blade Brake
Brake Pad
Against Pulley
Figure 16
9. Move the
blade rotation control
to the
ENGAGE position.
Check the pads for the
blade brake
. If the pads are excessively
worn or damaged, replace the
brake pad
assemblies. Correct
replacement parts and assistance are available from an autho-
rized service center.
10. Attach the wire to the spark plug. Mow for a short distance and
again check the operation of the
blade rotation control
.
11. When you move the
blade rotation control
to the
DISENGAGE position
, all movement will stop within five se-
conds. If there is movement of the belt or the blades continue
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 an autho-
rized service center.
12. If you replace the
mower drive belt
, move the
blade drive
spring
to the
top hole
(Figure 15).
Summary of Contents for 425016x48A
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