Service Manual

1. Stop the engine, remove the key, and
engage the parking brake.
2. Remove covers from the cutting unit.
3. Using a floor jack and properly rated jack
stands or the Z Stand®, raise the machine
until you can access the underside of the
cutting unit.
4. Inspect the assembly before removing it
from the mower. Look for the following:
A. Bent or damaged blade.
B. Missing or unused grease zerk.
C. String, wire, rope, etc. wrapped
around the spindle under the deck.
5. Remove the drive belt from the pulley.
Consult the machine operator's manual for
this procedure.
6. Remove the bolts retaining the spindle
pulley. Then remove the pulley from the
hub.
7. Unbolt the spindle housing from the deck.
Place spindle assembly on a bench or in a
vise and remove the blade.
8. Remove the spindle nut, heavy washer,
pulley hub, square key, and bearing
shield.
9. Inspect the pulley hub and square key for
damage. Carefully check the pulley hub
for cracks.
10. Remove the spindle shaft from the spindle
housing. If corrosion has bonded spacers
or bearings to the shaft, it may need to be
pressed out.
Note: The lower bearing spacer may remain
on the spindle shaft.
11. Inspect the spindle shaft. Check for the
following:
A. Worn or damaged keyway. Impacts
cause key and keyway damage.
9Spindle Repair Module
Z Master 500 Series
Nut
Square Key
Bearing
Shield
Seal
Bearing
Shield
Spindle
Shaft
Seal
Bearing Cone
Machine “C” Spacer
Bearing Cup
Inner Spacer
Heavy Washer
Pulley Hub
Seal Spacer
Spindle
Housing
Seal Spacer
Outer Spacer
Bearing Cup
Snap Ring
Bearing Cone