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3. Loosen flanged nut on each adjustment
hex bolt.
IMPORTANT:
To avoid bending adjustment
bolts, or have them slip off adjustment
brackets, it may be necessary to pull back on
wheel drive assembly as lower belt tension is
adjusted.
4. Turn both adjustment bolts in/out evenly
to achieve 1-1/4" – 1-1/2" (3 – 4 cm)
deflection in belt. Use finger pressure at
center of belt span to check for proper
deflection.
NOTE:
Measure adjustment bolt lengths to
ensure they are equal.
5. Hold adjustment bolt stationary and
tighten flanged nut against adjustment
bracket. Tighten to 26 lbf-ft (35 N•m).
6. Tighten lock nut and bolt attaching each
adjustment plate to the adjustment
bracket. Tighten to 23 lbf-ft (31 N•m).
7. Install drive belt guards. See
Adjust Wheel Drive Upper Belt
Tension
1. Remove upper and lower drive belt
guards. See
2. Loosen two flanged lock nuts and round
head square neck bolts securing each
bearing holder to wheel drive frame. Do
not remove.
3. Pull drive roller shaft up to achieve a
deflection of 1/8 – 3/8" (3 – 9 mm). Use
finger pressure at center of belt span to
check for proper deflection.
4. Lightly tighten two flanged lock nuts and
round head square neck bolts securing
each bearing holder to wheel drive
frame.
5. Check that drive rollers shaft is level by
measuring the position of both bearing
holders on the wheel drive frame. The
positions should be equal on both sides.
6. If adjustment is necessary, lightly tap on
bearing holders.
7. Tighten hardware to
14 lbf-ft (19 N•m).
8. Install drive belt guards. See
Adjust Mower Blade Drive Belt
Tension
NOTE:
Test and adjust the PTO clutch cable
before adjusting the mower drive belt tension.
See
1. Shut off engine.
2. Remove lower drive belt guard. See
3. Loosen the four flanged lock nuts from
the round head square neck bolts (two
front/two rear) securing the engine
mounting plate to mower frame. Do not
remove.
4. Apply and hold PTO clutch control lever.
Figure 19
1. Bolt and
Flanged Lock
Nut
2. Bearing
Holder
3. Wheel Drive
Frame
4. Wheel Drive
Upper Belt
5. Drive Rollers
Shaft
6. Blade Drive
Belt