Walker IMPLEMENT HITCH SB6670 - Manual (Page 59)

Maintenance Instructions
REPLACING/REPAIRING
59
6. Align the slot in the new sprocket with the
square key and slide the sprocket onto the drive
shaft. Make sure the key is in place between
the drive shaft and sprocket.
Remove and Replace Sprocket
Align Sprockets
7. Position the sprocket on the drive shaft so it is
aligned with the chain drive shaft sprocket.
8. When the sprockets are aligned properly, tight-
en the set screw in the drive shaft sprocket.
9. Install chain and adjust the chain tension. Refer
to ADJUSTMENTS of Rotary Broom Drive
Chain Tension in this section.
10. With the chain installed, recheck the sprocket
alignment.
11. Lubricate the drive chain. Refer to LUBRICA-
TION of Rotary Broom Drive Chain in this sec-
tion.
Check Sprocket Alignment with Chain Installed
12. Reinstall the chain guard by reversing the re-
moval procedures.
Two-Stage Snowblower Cutting Edge
NOTE: The cutting edge of the snowblower is re-
versible and needs to be replaced only when both
the top and bottom edges have worn.
Replace the snowblower cutting edge as follows:
1. Remove the six (6) 5/16-NC hex nuts and
5/16 in. lock washers from the rear of the snow-
blower housing, behind the cutting edge. Re-
move the six (6) 5/16-NC x 1 in. carriage bolts
from the front of the cutting edge.
2. If only one edge of the blade is dulled or
nicked, rotate the blade 180 degrees. (The
sharp edge should now be at the bottom.) Re-
install the cutting edge onto the snowblower
housing by reversing the removal procedure.
3. If both edges are dull or nicked, remove the
cutting edge and install a new one by reversing
the removal procedure.
Square Key
Set Screw
Drive
Sprocket
Set Screw
Drive
Shaft
Proper
Alignment
Improper
Alignment
Proper
Alignment
Improper
Alignment