A snow blower sits in the garage most of the year and then has to work on the coldest, most urgent morning of the season. The machine itself is rarely the problem. The fuel, the oil, and a few small parts are what fail, and they are easy to check if you do it on purpose.
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Deal with the fuel first
Gasoline left sitting in a tank and a carburetor goes stale over a few months and gums up the small passages inside the engine. You have two sound choices. Either run the engine until the tank is empty, or add a fuel stabilizer to fresh gas and run the machine for a few minutes so the treated fuel reaches the carburetor. Whichever you choose, write the date on the can or in the manual so the next person knows what was done.
Change the oil and check the spark plug
Drain or replace the oil while the engine is still warm, then refill to the level the manual shows. Look at the spark plug. If it is dark, oily, or cracked, replace it with the type the manual names, and keep a spare on the shelf with the gap set. A plug that fails on the first cold morning turns a quick job into a long afternoon.
Check the shear pins and the auger
Shear pins are meant to break when the auger hits something hard, so the machine survives the impact. Check that the auger turns freely by hand with the engine off, and look for ice, gravel, or bent blades. Carry a few spare shear pins of the correct size in a labeled bag. Replacing one takes minutes once you know where it sits.
Clear the chute and set the skid shoes
Scrape out the chute and the housing so nothing dried is waiting to freeze. Check the skid shoes or scraper bar at the bottom of the housing and adjust them so the blower clears the surface without digging into gravel or the lawn. Check the belts for cracks and the tires for even pressure. A machine that rides level clears more snow with less strain on Dad's back.
Store it dry and ready to start
Keep the machine somewhere dry and out of the path of the car. Leave the choke, the primer, and the starter cord within reach so the first pull is not a search. Put the owner's manual and the spare pins in the same spot. A tidy storage place is what makes the machine start without a fight.
Run a test before the first storm
Pick a dry day before the forecast turns. Fuel it, start it outdoors on the driveway, and let it run for ten minutes. Clear a small patch of the driveway to check that the auger, chute, and drive engage. Stop, look for leaks, and listen for rattles. If anything sounds wrong, fix it now while there is still time.
When to call a shop
Call a repair shop if the engine will not start after the fuel and plug checks, if the auger or drive gears make grinding noises, or if you see fuel or oil leaking from a seal. Ask the shop whether they service this make, how long they take in the busiest weeks, and whether they will do a pre-season check. Booking that check early is usually easier than waiting for the first storm to find a slot.