December 1, 2015

How to replace a snowblower friction disc

By Lyle Weischwill
How to replace a snowblower friction disc

This step-by-step repair guide shows how to replace the friction disc on a snowblower. The friction disc helps propel the snowblower forward. When the friction disc is in contact with the spinning drive wheel, the friction disc rotates and turns the axle. If the friction disc is worn or damaged, the snowblower moves slowly or erratically. Replace a worn out or broken snowblower friction disc with a manufacturer-approved replacement part.

This repair procedure works for Craftsman, MTD, Troybilt, Noma, Murray, Ariens, Husqvarna and Snapper snowblowers.

Quick links
Tools required
13/16-inch open-end or adjustable wrench
Socket set
Ratchet
Hammer
Anti-seize compound
Repair difficulty
Time required
30 minutes or less
Repair difficulty
Time required
30 minutes or less

Instructions

01.

Disconnect the spark plug wire

Pull the spark plug wire straight up and off the plug.

02.

Remove the frame cover

Tip the snow blower forward so it rests on the auger housing. Remove screws that secure the frame panel located between the wheels. Detach the panel to access the drive system components.

Tip the snowblower on its nose.

Tip the snowblower on its nose.

Remove the frame panel.

Remove the frame panel.

03.

Remove both wheels.

Remove the bolts that secure each wheel to the axle. Pull off both wheels.

Remove the wheels.

Remove the wheels.

04.

Remove the hex shaft mounting nut

Hold the hex shaft stationary with a 13/16-inch open-end or adjustable wrench. Remove the mounting nut using a ratchet and 1/2-inch socket or wrench.

Hold the hex shaft stationary.

Hold the hex shaft stationary.

Remove the shaft mounting nut.

Remove the shaft mounting nut.

05.

Remove the friction disc

Lightly tap the left end of the hex shaft to push the bearing out of the right side of the frame. Remove the bearing. Carefully pull the hex shaft down and to the left. Pull the friction disc off the shaft.

06.

Clean the shaft

Remove any rust from the shaft and clean it thoroughly. Apply anti-seize compound to the shaft. 

07.

Install the new friction disc

Slide the new friction disc onto the hex shaft. Position the friction disc properly and push the hex shaft back into the bearing on the right side of the frame. Reinstall the hex nut and tighten.

08.

Reinstall the wheels.

Push the wheels onto the axle. Reinstall the washer and mounting nut on each wheel. Tighten the mounting nuts securely on the axle.

09.

Reinstall the frame panel

Position the frame panel and line up the mounting holes. Insert the mounting screws and tighten firmly. Pivot the snow blower upright so it rests on its tires.

10.

Test the snow blower

Reconnect the spark plug wire. Fill the tank with gas and test the snow blower.

Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.
Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect valve lash
Main causes: broken shear pins, worn or loose auger drive belt, auger drive cable failure, damaged auger, bad gear case
Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground, engine problems
Main causes: punctured tire, damaged rim
Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly
Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems
Main causes: dirty carburetor, stale fuel
Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, auger cable problems
Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the belts
Repair guides for gas snowblowers

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