Replacing the Spark Plug on Your Snow Blower Engine

It’s hard to admit, but in most parts of the country, winter is going to be here for a while longer. Since it’s not time to rev up the lawn mower yet, remember to keep your outdoor power equipment in good working order for any late winter or early spring storms.

Replace the Spark Plug on a Briggs & Stratton Snowblower Engine

If your weather has been anything like mine, your snow blower has experienced lots of run time this season and it may be time to take a look at the spark plug.

Briggs & Stratton recommends inspecting the spark plug every 25 hours of operation and changing it every 100 hours. It’s likely you won’t need to change your spark plugs every year but if your snow blower engine isn’t turning over or starting and you have gas in the tank, replacing your spark plug may do the trick. Make sure to consult your snow blower operator’s manual before performing any maintenance and repair work, and follow all safety precautions.

How to install a new snow blower spark plug

To find the correct spark plug for your snowblower, check out our Briggs & Stratton spark plug FAQ.

Replacing the spark plug on your snow blower is inexpensive and easy to do. For a step by step visual, watch this video of a spark plug being changed on a Briggs & Stratton small engine from, or follow these instructions:

1. Make sure the engine is completely cooled. Disconnect the spark plug lead and remove the old spark plug using a spark plug wrench.
2. You’ll be able to tell if the spark plug needs replacing if it has wear or if the insulator is cracked or chipped.
3. Measure your spark plug gap with a feeler gauge. The gap should be set to .02″-.030″. Check for the specifications for your snow blower model. If you buy the spark plug for your particular snow blower the gap is likely preset to the correct gap.
4. Install the new spark plug by threading it into the cylinder head. Be careful not to over tighten.
5. Once attached, replace the cover. Remember not to start your snow blower while the spark plug is out of the engine.

Here is another helpful video from Craftsman that demonstrates how to change the spark plug in a Craftsman snow blower.

Where to buy a new snow blower spark plug

If you’re replacing a spark plug in a Briggs & Stratton engine, an authorized Briggs & Stratton dealer will likely have the plug in stock. If you’re not sure of the exact make and model of your snow blower, bring the old spark plug with you to the store to ensure a perfect match.


NOTICE: Customer service questions are not monitored via the blog. If you need assistance with your Briggs & Stratton engine or power equipment, please contact our Answer Center or post your question to our User Community.