Service - MTD 300 series Operator's Manual

Service

Augers
The augers are secured to the spiral shaft with four shear pins and
cotter pins. If you hit a foreign object or ice jam, the snow thrower
is designed so that the pins may shear. Refer back to Figure 5-1.
If the augers do not turn, check if the pins have sheared. Replace,
if needed, with proper shear pins. Refer to Parts List for correct
part number.
CAUTION:
NEVER replace the auger shear pins
with standard pins or fasteners. Any damage to the
auger gearbox or other components, as a result of
doing so, will NOT be covered by your snow
thrower's warranty.
Replacing Belts
1. Allow the engine to run until it is out of fuel. Do not
attempt to pour fuel from the engine
2. Remove the key to prevent accidental starting.
3. Remove the self-tapping screw shown in Figure 7-1, and
press the plastic tabs to release the belt cover. Pull the
belt cover up and out from around the engine and chute
assembly. Set it aside and save.
Figure 7-1
Plastic Tab
Auger Belt
1. Tip the snow thrower up and forward so that it rests on
the auger housing. Remove the belt keeper (Refer to Fig.
7-3). Return the snow thrower to its upright position to
complete the following steps.
2. Slip the front auger belt off of the engine pulley, pushing it
forward and rolling in off of the pulley. See Figure 7-2.
Engine
Pulley
Drive
Belt
Figure 7-2
3. Squeeze the auger control handle to release the auger
brake, which is the tab that holds the belt onto the auger
pulley. Remove the belt.
4. Replace with new belt after replacing the drive belt.
7
Auger Belt
Auger
Pulley
Belt Keeper
Idler Bracket
15