How to Start a Balky Snow Blower

Start with the obvious. Be sure the key is in the ignition (kids might have moved it) and check that the throttle and choke are set properly. The throttle needs to be set to "fast" and the choke needs to be open since the engine is cold. As well, some machines need to be primed before they will start, so use the primer button before trying to start the engine.

Check that gas is getting to the motor. Pull the starter cord and turn the engine over a few times, then use your spark plug wrench to remove the spark plug. If the plug is wet and smells of gas, the engine is getting fuel.

Make sure the plug is actually working by reattaching the spark plug to the plug wire, then while holding the plug with insulating pliers, turn the engine over and look for a spark. If the spark plug is working and it was wet with gas, the problem is likely with the gasoline itself.

Clean the spark plug while you have it out of the engine. Use a piece of sandpaper to remove any builtup carbon on the plug and run a piece of cardboard through the spark plug gap to remove any build up of carbon that might be there. Alternatively, you could simply take the old spark plug with you to an automotive store and get a new one.

Empty the old fuel out of the tank by opening the drain on the bottom of the tank or pumping it out with a power drill pump attachment. Once the tank is empty, refill it with fresh, new gas. Now turn the engine over a few times and hopefully it will start.

If your engine still won't start after cleaning the plug and adding fresh gas, it may be time to have your snow blower professionally serviced. The solution may involve removing and cleaning the carburetor, or your engine may have timing or compression problems that are beyond most DIYers' skill sets.