Rule one: never, ever clear a chute by hand
When wet snow packs the chute, the impeller stops — but it's still under tension from the belt and the packed snow. Clear the jam and it can snap around a quarter turn, even with the engine off. That's how fingers are lost. The procedure is always the same:
- ▸Release the controls and shut the engine off (or pull the battery / unplug the cord).
- ▸Wait for every moving part to stop — 10 seconds is not long.
- ▸Use the clean-out tool clipped to the handle (every modern machine has one) or a broom handle. Never a hand, never a foot, never while it's running.
- ▸Before you restart, spray the chute with non-stick snow spray or silicone — it's the cheapest clog prevention there is.
Shear pins: the $10 part that saves the $300 gearbox
On a two-stage machine, the augers are attached to the auger shaft by shear pins — small bolts designed to snap if the auger hits something it can't move (a frozen newspaper, a chunk of ice, the edge of a paver). When one shears, the auger on that side spins freely and stops throwing. That's the pin doing its job.
- ▸Keep two or three spares on the machine — most have a holder on the dash. Shearing always happens mid-storm.
- ▸Use the correct pin for your brand and model (Ariens, Toro, Husqvarna, Cub Cadet/Troy-Bilt/MTD all differ). A hardware-store grade-5 bolt won't shear and will transfer the shock to the gearbox instead.
- ▸Replace them with the engine off and the key out. Line up the holes by rotating the auger by hand — with gloves.
We keep a verified OEM shear pin kit in our accessories picks.
Fuel: why snow blowers won't start in November
Almost every "it won't start" story traces back to last March's gasoline. Modern E10 gas starts going stale in about 30 days; the ethanol absorbs water, the light fractions evaporate, and what's left varnishes the carburetor's tiny jets. Small engines with small carbs are the most vulnerable things you own.
- ▸Stabilizer in every can, every fill. STA-BIL 360 or equivalent, dosed per the label, from the first gallon of the season. It's pennies per tank.
- ▸Buy gas in small quantities. A 2-gallon can you refill every few storms beats a 5-gallon can that sits.
- ▸Ethanol-free gas (sold at some stations and in cans at hardware stores) is worth it if you can get it — especially for the last tank before storage.
- ▸End of season: either run the carburetor dry (close the fuel shutoff and let it stall) or fill the tank with fully stabilized fuel and run it for five minutes so treated gas is in the carb. Half-full, untreated is the worst option.
Cold-start tips for gas machines
- ▸Use the electric start — it's a 120V plug; an extension cord to the garage outlet is all it needs. Save your shoulder.
- ▸Full choke, prime 2–3 times (more if it's below 10°F), crank. Once it catches, ease the choke off over 30 seconds. Let it warm up a minute before engaging the auger.
- ▸Use 5W-30 full synthetic oil — it flows at -20°F where conventional 10W-30 is molasses. Check the level before every use; small engines burn a little.
- ▸If it won't catch after a few tries, the plug is probably wet. Pull it, dry it, and try again with no choke — or just swap it for the spare you keep on the shelf.
- ▸Battery machines: keep the packs indoors until you go out. A 20°F battery has noticeably less runtime than a 68°F one.
Mid-season checks (two minutes, every few storms)
- ▸Skid shoes and scraper bar. Flip the skids to the unworn edge or replace them before the scraper bar starts grinding pavement. On gravel, raise them so the bar clears the stones.
- ▸Tire pressure. Equal pressure on both sides or the machine pulls. Usually 15–20 psi; it's on the sidewall.
- ▸Belts. If the auger slows under load or the drive slips, a belt is glazed or stretched. Belts are cheap; carry the part number.
- ▸Chute and auger housing. Spray with non-stick snow spray. Check that the chute rotates freely — ice builds up in the gear teeth.
- ▸Cables. If the auger or drive doesn't stop crisply when you release the handle, adjust the cable. That deadman release is your primary safety system.
End-of-season storage
- ▸Deal with the fuel (see above). This is 80% of storage.
- ▸Change the oil while the engine is warm — dirty oil is acidic and sits on bearings all summer.
- ▸Pull the spark plug, put a teaspoon of oil in the cylinder, pull the cord twice slowly to coat the walls, reinstall the plug. ("Fogging" — optional for one summer, smart for anything longer.)
- ▸Touch up chipped paint on the auger housing, grease the auger shaft and chute gear, and wipe the whole machine down.
- ▸Cover it. A fitted cover keeps dust off and, more importantly, keeps mice from discovering the air filter. Store it off a damp floor if you can.
- ▸Battery machines: charge packs to about 50–60%, bring them inside, and top them up once mid-summer.
The pre-storm checklist
Tape this inside the garage. Five minutes before the first flake:
- ▸Oil level checked, fresh stabilized fuel in the tank (or batteries charged and warm).
- ▸Spare shear pins and the clean-out tool on the machine.
- ▸Chute sprayed, tires aired, skids set for the surface.
- ▸Driveway markers in, hose and extension cords off the driveway, doormat and newspaper picked up.
- ▸Cleats on your boots, gloves on, cord out for the electric start.
Most of the gear on that list is in our accessories & maintenance picks. If you're still shopping for the machine itself, start with which snow blower do I need?