Drive Belt; Drive Pulley - MTD 31A-3CAD729 Operator's Manual

DriveBelt
NOTE: Replace the drive belt before reassembling the new auger
belt.
1. Tip the snow thrower up and forward so that it rests on the
auger housing.
IMPORTANT:
Remember, gas could leak from the carburetor at
this point, the gas cap should have been covered with plastic as
previously instructed.
2. Remove the spring that connects the transmission to a bolt
on the engine frame. See Fig. 7-3.
3. Pivot the transmission forward to release pressure on the
drive belt. Remove belt from transmission pulley.
4. Remove the drive belt from around the engine pulley, and
away from the unit.
5. Place the new drive belt into the groove on the engine
pulley. See Fig. 7-2.
6. Tilt the transmission forward and position the drive belt
onto the transmission pulley.
7. Reconnect the spring to the bolt on the engine frame and
secure the transmission. Reinstall the flange lock nut.
8. Install new auger belt.
9. Reassemble the belt cover on the snow thrower
10. Reassemble the belt keeper to the housing.
Drive Pulley
Belt Keeper ...
Figure 7-3
NOTE: It may be easier to first remove the flange lock nut,
then use needle-nosed pliers to firmly grip spring and
remove from bolt.
SECTION 7 -- SERVICE 17