GB - 29
Adjust Mower Blade Drive Belt
Tension
1. Remove lower guard. See
DRIVE ADJUSTMENTS Drive Belt
Guard
2. Loosen the four flanged lock nuts from
the round head square neck bolts that
secure the engine mounting plate to the
mower frame. Do not remove hardware.
See Figure 30.
3. Hold the flanged nyloc nut (on the inside
of the engine mounting plate) stationary
with a wrench while turning the belt
tensioning bolt clockwise. As the end of
the bolt extends against the mower
frame, the engine mount plate is forced
back, increasing belt tension. See
Figure 31.
4. Tension belt to get a maximum of 80 lbs
of tension. This correlates to
approximately 0.250" (6.35mm) flex in
belt. Use the pressure of one finger at
the center of the belt span to check for
proper flex. See Figures 28 and 29.
5. Tighten the four flanged lock nuts on the
round head square neck bolts that
secure the engine mounting plate to the
mower frame.
6. Install lower guard. See
Figure 30
Engine Mounting Plate
Mounting Bolts
Frame
Figure 31
Engine
Mounting Plate
Belt
Tensioning Bolt
Flanged Nyloc Nut
Mower Frame
