How To Prevent A Snowblower From Clogging

I speak from (a lot of) experience when I say there’s nothing worse than being out clearing your drive when your snowblower clogs. It’s so frustrating and time-consuming to fix in snowy conditions. However, I’ve also found it to be easily avoidable. You can prevent a snowblower from clogging by using one or many different techniques such as; pushing the machine faster, clearing the path of objects or using a non-stick spray or lubricant.

Different techniques work differently depending on the machine you have and the conditions you’re working in. I’ve personally tried all of the methods below in various conditions and where possible I suggest you do the same.

Check out our snowblower guide to help you decide which brand is best for you!

Why Do Snowblowers Clog?

To understand how to unclog your snowblower you first want to understand what causes the machine to clog. While it’s possible for your snowblower to clog with any type of snow, I’ve found it’s most common when the snow is either sticky or a combination of snow and ice. This then builds up around the auger(s) or at the top of the snow shoot and prevents the snow from being pushed out through the snowblower.

How To Prevent A Snowblower From Clogging

There are multiple different things you can do to try and prevent your snowblower from clogging. I’ve personally tried all of these techniques and found some to work better than others, although it really depends on the snowblower you have, the conditions you’re working under and the area you’re looking to clear.

Non-Stick Spray

One way to prevent your snowblower from clogging is by applying a specially designed non-stick snow spray to the augers and shoot of the machine. The non-stick spray comes in an aerosol can making the application process is quick and easy, it’s also very affordable and can be picked up from most DIY stores or online.

The spray works in a similar way to cooking oil in a pan and causes the metal interior of the machine to become slippery therefore preventing the attachment of snow.

Friends both online and offline suggested using cooking oil or WD40 instead of the non-stick spray as an affordable solution. I found this didn’t work as well as the specially designed stuff as it needed reapplying every 15 minutes or so. Meanwhile, the specially designed non-stick snow spray I applied lasted a couple of snowstorms over a couple of weeks.

Propel The Machine Faster

If you often find that you get wet, heavy snow or ice then you may want to consider getting a self-propelled snowblower. This is because slow propulsion of the machine is designed to encourage the accumulation of snow in the snowblower shoot. The faster the snowblower moves the faster the snow is going to be pushed through the machine.

However, I’ve also found that tackling less snow in one go by positioning the machine so that the augers on the front only cover half the snow instead of a full path of snow is going to allow the machine to work better in heavy snowfall. This allows the force of the entire machine to only work on clearing half the snow propelling the snow through the machine and out of the shoot faster and often further.

Ensure The Area Is Free Of Obstructions

You’d be surprised (or maybe horrified) as to how many times I’ve accidentally clogged my machine by running over the newspaper. In fact, it’s become somewhat of a standing joke in our house. Snowblowers are designed for snow, so if the machine begins to chew up anything else in its path don’t be surprised if it cuts out.

To prevent this I’ve found it best to always clear the area you plan to use the snowblower on prior to the snowfall (when the snow is forecast) and to only use the correct machine under the correct circumstances. I.e. not using a single stage snowblower on gravel.

Side Note: Removing foreign objects from a clogged snowblower is the number one cause of accidents from snowblowers in the US.

If you do accidentally find that you’ve clogged your machine please follow the safety instructions. Plenty of machines come with a cleaning tool which will allow you to easily remove the majority of objects.

Taking this small amount of time to prep the area before using the snowblower is likely to significantly minimise the likelihood of your machine becoming clogged or damaged as a result.

Allow The Machine To Warm Up

To get the best results from your snowblower and to avoid damaging the machine I always suggest allowing five minutes after starting for the machine to warm up.

After these five minutes, I personally start with areas of light snowfall where possible before moving to areas with a heavy snowfall last. This precaution will give your engine enough time to warm up and give it momentum to handle regions with the most compacted snow. 

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