MTD 31AS2B5-801 snow thrower repair and replacement parts

Mtd 31AS2B5-801 snow thrower

Here are the repair parts and diagrams for your MTD 31AS2B5-801 snow thrower. The diagram(s) below can help you find the right part. If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.
On this page, you can also find any manuals, installation guides and error code tables associated with this model.
For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

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

Repair guides for gas snowblowers

These step-by-step repair guides will help you safely fix what’s broken on your snowblower.

December 1, 2015
By Lyle Weischwill
How to replace a snowblower friction disc

The friction disc is one of the components of the drive system. If it's worn or damaged, the snowblower won't self-propel. These step-by-step instructions show how to replace the friction disc yourself, in about half an hour.

Repair difficulty
Time required
 30 minutes or less
December 1, 2015
By Lyle Weischwill
How to replace a snowblower stop switch

Replace the stop switch on your snowblower if your engine won't start.

Repair difficulty
Time required
 30 minutes or less
December 1, 2015
By Lyle Weischwill
How to replace a snowblower skid shoe

To prevent damage to your snowblower auger, replace the skid shoes when both sides of the shoe are worn. It's an easy repair that you can handle yourself.

Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas snowblowers

Use the advice and tips in these articles and videos to get the most out of your snowblower.

November 1, 2016

Start-of-winter snowblower care

By Sears PartsDirect staff

Get your snowblower ready for winter before winter arrives, so you don't have to mess with it while snow piles up.

November 1, 2014

Snowblower common questions

By Sears PartsDirect staff

Find answers to questions many people ask about snowblowers.

November 1, 2014

How to store a snowblower

By Sears PartsDirect staff

Protect your snowblower's engine and body by preparing it for after-season storage.