A snowblower dragging its ass across your yard spells trouble. But since you wondering if it should drag the ground, you are well on your way to avoiding snowblower damage. I’m a mechanic, and shortly we’ll have this minor issue sorted.
While snowblower shoes are designed to scrape across the ground, a snowblower scraper bar should not scrape the ground; it should instead skim across the surface.
In this post, you’ll learn why snowblower scraper bars should not contact the ground; you’ll also learn what snowblower height is best for different yard surfaces and how to adjust your snowblower scraper bar height. We’ll also cover replacing a worn-out scraper bar.
- Why your snowblower shouldn’t scrape the ground
- What is a scraper bar
- Yard surface vs. snowblower ride height
- How to adjust snowblower height
- How to replace snowblower scraper bar
- Sum up
Why your Snowblower Shouldn’t Scrape Ground
A snowblower does scrape the ground, or at least its shoes do, but no other part of the machine’s body should rub the ground. So what are shoes, and why do they scrape the ground? The shoes are metal (quieter nylon shoes are available), adjustable blocks located on either side of the snowblower bin, and they serve to maintain the snowblower height.
Adjusting shoe height changes how much clearance there is below the bin and, consequently, how clean your pass is. Lifting the shoes lowers the bin and offers a tighter shave, but it comes with some risks.
The lower the bin, the more likely you are to scoop up something hard like a rock, etc. such objects can cause an auger to jam, which, if all is well with your snowblower, breaks a shear pin.
You don’t often think a broken anything is good news, but a broken shear pin is. The pin is designed to break to prevent auger gearbox or engine damage.
I wrote a post recently on shear pin replacing, and you can check it out here – “Diagnosing broken shear pin”
But there’s another good reason not to allow your snowblower to drag along the surface; it will wear out the bin. Luckily snowblowers come with built-in bin protection called a scraper bar, and we’ll look at that next.
What is Snowblower Scraper Bar?
A scraper bar is a replaceable metal strip located along the leading edge of the bin. As your snowblower moves across the snow, it’s your scraper bar that skims the surface of the snow.
Scraper bars in an ideal world wouldn’t make contact with the surface and, therefore, wouldn’t wear out. But many of us simply forget to adjust the shoes at the beginning of the season, leading to scraper bar wear and obviously increased surface contact.
Increased surface contact or scraping is bad for your machine and you. The increased contact creates increased wear and tear; it’s harder on the bin, harder on gas, belts, tires, and much harder work for the operator. The increased contact brings increased vibration, and that causes fatigue.
Your scraper bar should be level, and while it’s possible your scraper fasteners have come loose, allowing it to drop and make contact with the surface, it is far more likely your shoes need adjusting. Yep, we’ll need to check and adjust the shoe height; I’ve covered the whole process here in this post, “Snowblower shoe adjustment.”
Yard Surface vs. Snowblower Ride Height
The surface or terrain type we’re clearing is the main consideration when deciding on the ride height for the bin. Too low and we risk damaging the surface and the snowblower, typically running a snowblower too low causes debris to enter the bin and jam an auger. That often results in a broken shear pin; you can check out replacing a shear pin here – “Diagnosing a broken shear pin.”
Typically you’ll find most set their ride height as follows:
|Surface Type||Ride Height|
|Hard sealed surface||1/2 in|
|Loose surface (stone or pebble)||1 inch|
|Timer deck||1/2 inch|
How to Adjust Snowblower Height
I’ve covered the whole shoe-adjusting process previously, including an easy-to-follow stepped guide with pictures. You can check it out here “Snowblower shoe adjustment.”
How to Replace Snowblower Scraper Bar
I’ve covered the whole scraper bar replacement process previously, including an easy-to-follow stepped guide with pictures. You can check it out here “Snowblower shoe adjustment.”
Snowblower shoes do scrape across the ground, but no other metal part of the snowblower should make contact with the surface of the ground. Adjusting the shoe’s height adjusts snowblower bin clearance. The replaceable leading edge of the bin is known as the scraper bar, and it protects the bin from wear caused by maladjusted or worn-out skid shoes.
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- About the Author
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John Cunningham is an Automotive Technician and writer at Lawnmowerfixed.com.
He’s been a mechanic for over twenty-five years and shares his know-how and hands-on experience in our DIY repair guides.
Johns’s fluff-free How-to guides help homeowners fix lawnmowers, tractor mowers, chainsaws, leaf blowers, power washers, generators, snow blowers, and more.