Hydraulic Pump Drive Belt Replacement - Snapper 500Z Series Safety Instructions & Operator's Manual

Hydraulic Pump Drive Belt Replacement

1. Park the tractor on a smooth, level surface such as a
concrete floor. Disengage the PTO, engage the parking
brake, turn off the engine, and remove the ignition key.
2. Remove the PTO drive belt (see MOWER BELT
REPLACEMENT for removal instructions).
3. Loosen and remove the crankshaft bolt (C, Figure 42)
and the PTO clutch (B) from the engine crankshaft.
WARNING
STORED ENERGY DEVICE: Improper release of the belt
tension spring can result in personal injury.
Use extreme caution when removing this spring.
4. Loosen the nut on the spring anchor eyebolt (G, Figure
43) to release the majority of the belt tension. Use
caution and remove the nut to completely release the
tension.
A
B
C
Figure 42. Removing the PTO Clutch
A. PTO Clutch Mounting Tab
B. PTO Clutch
C. Crankshaft Bolt
Regular Maintenance
5. Remove the old belt and replace it with the new one.
Make sure the V-side of the belt runs in the grooves of
the crankshaft pulley and the transmission pulleys (B &
C).
6. Reinstall the spring anchor eyebolt (G) into the anchor
tab and loosely fasten the nut. Adjust the anchor
eyebolt until a measurement of 5-7/8" (14,92 cm) is
achieved from the outside if the spring hooks. Tighten
nut.
7. Reinstall the PTO clutch to the engine crankshaft and
secure with the crankshaft bolt. Tighten the crankshaft
bolt to 65 ft. lbs (88 Nm).
NOTE: Make sure that the slot in the PTO clutch lines up
with the PTO clutch mounting tab (A, Figure 42) underneath
the engine deck.
8. Reinstall the PTO drive belt.
H
E
C
5-7/8"
(14.92 cm)
Figure 43. Hydraulic Pump Drive Belt Replacement
A. Pump Drive Belt
B. Crankshaft Pulley
C. Pump Pulley
D. Idler Pulley
E. Idler Arm
F. Spring
G. Spring Anchor Eyebolt
H. Stationary Idler Pulley
B
D
A
C
F
G
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