MTD 31AE993I401 Manuel D’Utilisation

14

Follow the instructions below to check the condition of 
the friction wheel rubber every 25 hours of operation.

•

Remove the six self-tapping screws from the frame 
cover underneath the snow thrower.

•

Visually inspect the friction wheel rubber for 
excessive wear, cracks, or loose fit on the friction 
wheel drive hub.

•

Also engage the traction control and check if the 
friction wheel is making contact with friction plate. 
Refer to Figure 11. If it does not make contact, 
adjust the traction drive cable and recheck the 
friction wheel.

•

Replace friction wheel rubber if necessary. Refer to 
instructions on page 16.

Follow the instructions below to check the condition of 
the drive belts every 50 hours of operation.

•

Remove the plastic belt cover on the front of the 
engine by removing the three self-tapping screws.

•

Visually inspect for frayed, cracked, or excessively 
worn out belts.

•

Replace belts as necessary as outlined in Service 
Section on page 15.

Follow accompanying engine manual for all engine-
related maintenance issues.

The augers are secured to the spiral shaft with two 
shear bolts and hex lock nuts. If you hit a foreign object 
or ice jam, the snow thrower is designed so that the 
bolts may shear. Refer to Figure 13.

If the augers do not turn, check if the bolts have 
sheared. Two replacement shear bolts and hex lock 
nuts have been provided with the snow thrower. Refer 
to Loose Parts in the Assembly Section. 

 NEVER replace the auger shear bolts with 

standard hex bolts. 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.

The shave plate and skid shoes on the bottom of the 
snow thrower are subject to wear. These should be 
checked periodically and replaced when necessary. 

NOTE: The skid shoes on this machine have two wear
edges. When one side wears out, they can be rotated
180° to use the other edge.

•

Remove the six carriage bolts, belleville washers 
and hex nuts which attach two skid shoes to the 
snow thrower on two sides. See Figure 12.

•

Reassemble new skid shoes with the hardware 
removed earlier (cupped side of belleville washer 
against the skid shoes). Make certain the skid 
shoes are adjusted to be level.

•

To remove the shave plate, remove the carriage 
bolts, belleville washers and hex nuts which attach 
shave plate to the snow thrower housing.See 
Figure 16. 

•

Reassemble the new shave plate, with heads of 
carriage bolts to the inside of the housing. Tighten 
securely.

Before servicing, repairing, or 

inspecting, disengage all clutch levers and stop 
engine. Wait until all moving parts have come 
to a complete stop. Disconnect spark plug wire 
and ground it against the engine to prevent 
unintended starting.