January 1, 2015

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

By Sears PartsDirect staff
The difference between a single-stage snowblower and a dual-stage snowblower.

Understanding the difference between a single-stage snowblower and a dual-stage snowblower helps you to determine which snowblower type would be better suited to your needs. We’ve put together some quick facts about how each type of snowblower works.

Single-stage snowblower

A single-stage snowblower removes snow with one motion, using an impeller or auger. The auger is usually formed from two or more curved plastic paddles.  These paddles pull the snow into the unit and then throw it out through the chute.

The snowblower sits low to the ground and removes snow down to the pavement. A single-stage snowblower is lightweight and easy to maneuver.  It is best for clearing paved, moderate-sized driveways with snowfall depths of 10 to 12 inches.

Dual-stage snowblower

A dual-stage snowblower removes snow with two components; a serrated-edge auger blade and a high-speed impeller. The auger cuts through the snow and feeds it to the impeller, which propels the snow away through the chute. 

A dual-stage snowblower is slightly raised to allow for use on gravel driveways; as a result, it leaves a thin layer of snow behind. The dual-stage snowblower is larger than a single-stage, making it ideal for deeper snow and larger driveways. It is also self-propelled, making it perfect for use on steep areas.

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

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 spark plug

You need a spark to fire up the engine of your snowblower, and that spark comes from a spark plug. You can replace one in minutes.

Repair difficulty
Time required
 15 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, 2014
How to lubricate a snowblower auger shaft video
By Sears PartsDirect staff

This video shows how to how and where to lubricate the auger shaft on a snowblower.

November 1, 2014
How to adjust a snowblower shift cable video
By Sears PartsDirect staff

This video shows how to adjust a snowblower's shift cable.

November 1, 2014
How to adjust snowblower skid shoes video
By Sears PartsDirect staff

See how to periodically adjust the skid shoes on a snowblower so they are flush with the ground.