Craftsman C459-527870, Operator'S Manual

Page: 19 / 60

19
MAINTENANCE
Figure 27
Figure 28
Figure 29
Figure 30
8. Place a block of wood underneath the auger housing as shown in
Figure 28 and separate auger housing from the frame by tilting the
housing forward and pulling up the handles.
9. a. Using a 1/2” wrench, remove the hex screw and washer from the
center of the pulley on the auger housing. See Figure 29.
b. Lift the brake bracket assembly out of the pulley groove.
c. Remove the pulley without removing adapter.
10. Remove and replace auger belt inside belt keepers.
11. Apply Loctite 262 to the threads of the hex screw used for mounting
the auger pulley.
12. Reassemble pulley to auger housing aligning pulley slots with posts
on adapter, secure with hex screw and washer. Torque hex screw
250-325 in. lbs.
NOTE: Make sure the brake puck is seated in the pulley groove.
If also replacing the drive belt, proceed to the “Drive Belt” instruction. If
not, reassemble by performing the previous steps in the opposite order
and manner of removal.
Proper Adjustment:
With the auger clutch lever in the disengaged
position, the top surface of the new belt should be even with the outside
diameter of the pulley.
1. To adjust, disconnect ferrule from brake bracket assembly and
thread ferrule in (towards idler) to increase tension on belt, and out to
decrease tension.
NOTE:
The brake puck must always be firmly seated in the pulley groove
when auger control is disengaged.
IMPORTANT: Repeat the “Auger Drive Control Test” from the Assembly
section before operating snow thrower.
Drive Belt
1. Pull the idler pulley away from the backside of the drive belt to relieve
the tension and slide the drive belt off the idler pulley. See Figure 30.
2. Remove the belt from the bottom drive pulley and the engine pulley.
3. Install the new belt on the pulleys in the reverse order and re-tension
with the idler pulley.
a
c
b
Adapter
Slots
1
2
3