Yard-Man 12A-559K401 Operator's Manual page 14

• Loosen the center hex bolt and lower the blade and
engine pulley until there is adequate clearance to
move the belt past the belt keeper.
• Remove the belt from the engine pulley and around
the blade. See Figure 14.
Front Drive Cover
Right Front
Wheel
Center
Hex Bolt
Figure 14
Drive Belt
Pulley
Shoulder
Screw
Left Front
Wheel
Engine
Pulley
Remove belt
from around
pulley and blade
• Reassemble in reverse order with new belt (part #
754-0465). NOTE: Begin idler reassembly by
inserting bolt up through the idler bracket hole.
Adjust the drive clutch following instructions on
page 14.
Idler
Bracket
Bolt
Spacer
Shoulder
Screw
Figure 13
Adjusting Drive Clutch Control
• The drive clutch adjustment wheel is located on the
drive clutch control handle housing and is used to
tighten or loosen tension on the drive cable.
Perform this adjustment if the following exists.
a. The mower does not propel itself with the
drive clutch engaged.
b. The mower's drive wheels hesitate with the
drive clutch engaged.
• To resolve the above problems, rotate the
adjustment wheel with your fingers: clockwise to
tighten the cable, and counter-clockwise to loosen
the cable. See Figure 15 .
14
NOTE: The wheels have
been moved forward in
this picture for clarity.
Do not remove the
wheels away from the
mower housing while
doing the job.
Belt
Keeper
Lock Nut
Idler
To tighten
cable
Adjustment
Wheel
To loosen
cable
Figure 15