MTD 31AS6BEE793 snow thrower Parts

A gas snowblower like the MTD 31AS6BEE793 typically lasts 15 to 20 years with consistent maintenance and proper storage. Separately, the operator’s manual for this product family also notes an average useful life of 7 years or 60 hours for safety inspection purposes; both can be true depending on use and upkeep (see the 31AS6BEE793 operator’s manual).

What “lifespan” means for this model

Snowblower life is usually limited by wear items (belts, skid shoes, shear pins), fuel-system condition, and corrosion, not the housing itself.

• Light residential use (short driveway, a few storms per year): often 15 to 20 years
• Heavy use (deep, wet snow; long runs; commercial-like use): often 10 to 15 years
• Poor storage (fuel left in carburetor, outdoor exposure): can drop below 10 years

Maintenance habits that extend life

We see the biggest longevity gains from these basics:

• Change engine oil on schedule (first 5 hours, then seasonally)
• Use fresh fuel and stabilize fuel before storage
• Keep the auger area clear; replace shear pins when they break (never substitute bolts)
• Inspect and replace worn belts before they slip or shred
• Clean and dry the machine after use; store in a dry, covered area

If your auger belt is worn or glazed, replacing it early can prevent loss of throwing performance; the compatible belt for this model is the MTD snowblower auger drive belt 256963.

Quick “repair vs. replace” guide

What you’re seeing	Typical cause	Usually worth doing?
Starts hard, surges, runs rough	Old fuel, dirty carburetor, spark plug	Yes
Won’t throw snow far	Belt slip, shear pin, chute clog	Yes
Repeated major drivetrain issues	Friction wheel, drive system wear	Depends on cost

Why it matters

A snowblower can run for decades, but safety and reliability depend on routine service. Following the inspection and maintenance intervals in the manual helps you avoid mid-storm breakdowns and reduces the chance of damage to the auger/impeller system.

Last updated: January 2026

For the MTD snow thrower model 31AS6BEE793, a 2-stage snowblower is usually the better choice for most homeowners because it balances power, cost, and maintenance. A 3-stage is better only if you regularly clear heavy, icy snow or deep drifts and want faster intake and throwing.

What “2-stage” vs “3-stage” means

A 2-stage machine uses an auger to pull snow in and an impeller to throw it. A 3-stage adds a fast-spinning accelerator in front of the auger to move more snow faster.

• 2-stage: strong all-around performance for typical driveway snow
• 3-stage: faster in deep, dense, end-of-driveway plow piles
• 3-stage: more moving parts, typically higher cost and more complexity

For operating and safety basics that apply to this MTD platform, follow the guidance in the 31AS6BEE793 instruction manual.

How to choose for your driveway

Use these practical “fit” checks:

• Average snowfall and drift depth: deeper and heavier favors 3-stage
• Snow type: wet, packed, and icy favors 3-stage
• Driveway size: large areas can justify 3-stage speed gains
• Surface type: gravel drives often need careful skid shoe setup either way
• Maintenance comfort: 2-stage is typically simpler to service

Quick comparison

Feature	2-stage	3-stage
Best for	Most driveways and typical storms	Heavy, icy snow and deep drifts
Snow intake speed	Moderate	Faster
Complexity	Lower	Higher
Cost	Lower	Higher

Why it matters

Choosing the right stage helps prevent clogging, reduces strain on the auger/impeller system, and can lower wear on drive components and belts. If your machine starts losing throwing performance, belt condition is one of the first things we check on many snowblower designs.

Related DIY help

• The difference between a single stage snowblower and a dual stage snowblower

Last updated: January 2026

For the MTD snow thrower model 31AS6BEE793, use regular unleaded gasoline with a minimum of 87 octane. Higher octane (like 91) is not required for normal operation; the key is using clean, fresh fuel and avoiding E85. See the fuel guidance in the 31AS6BEE793 operator’s manual.

Fuel recommendations for 31AS6BEE793

Use these fuel guidelines to help prevent hard starting, surging, and carburetor issues:

• Use unleaded gasoline, 87 octane minimum.
• Gasoline with up to 10% ethanol (E10) is acceptable.
• Gasoline with up to 15% MTBE is acceptable.
• Do not use E85.
• Avoid stale fuel; buy only what you will use in the near term.

87 vs 91: what changes and what doesn’t

In most snowblower engines like the one used on 31AS6BEE793, octane is mainly about preventing knock, not adding power.

Fuel choice	OK to use?	What to expect
87 octane (regular)	Yes (recommended)	Normal starting and performance
91 octane (premium)	Yes (optional)	Typically no performance benefit
E85	No	Can cause running problems and fuel-system damage

Why it matters

Using the correct fuel helps your MTD snowblower start easier in cold weather and reduces the chance of fuel-system varnish that can lead to rough running or a no-start condition.

Helpful related DIY content

If fuel issues have already started causing performance problems, our troubleshooting steps can help: snowblower won't start.

Last updated: January 2026