How to store a lawn mower for NB winter?

Proper winter storage is essential for lawn mowers in New Brunswick's harsh climate — temperatures can drop to -30°C and moisture can cause serious damage if your mower isn't properly prepared.

Fuel System Preparation is the most critical step. Either run the mower completely out of gas or add fuel stabilizer to a full tank. Running it dry prevents gum and varnish buildup, but if you choose to store with fuel, use a quality stabilizer like STA-BIL and run the engine for 5-10 minutes to circulate the treated fuel through the carburetor. Never store with untreated gas — New Brunswick's long winter (November through April) will turn that fuel into a gummy mess that clogs your carburetor.

Engine and Oil Maintenance should be done before storage. Change the oil while the engine is warm — old oil contains acids and moisture that can corrode internal parts during the 5-6 months of NB winter storage. Remove the spark plug, add a tablespoon of oil to the cylinder, and pull the starter cord a few times to distribute it. This prevents rust on cylinder walls. Replace the spark plug if it's more than two seasons old.

Cleaning and Protection prevents rust and pest damage. Clean all grass clippings from the deck, chute, and engine cooling fins — decomposing grass holds moisture and attracts rodents. In New Brunswick's humid Maritime climate, any trapped moisture will cause rust. Spray the deck with WD-40 or apply a light coat of oil to metal surfaces. Check for any damage that needs repair before spring.

Storage Location and Setup matters significantly in NB's freeze-thaw cycles. Store in a dry location like a garage, shed, or basement — avoid unheated outbuildings where condensation forms. If you must store outside, use a waterproof cover but ensure air circulation to prevent condensation. Remove the battery from electric start mowers and store it in a warm location, checking the charge monthly.

Final Preparation Steps include disconnecting the spark plug wire for safety, folding down the handle if possible to save space, and placing the mower on blocks or plywood to prevent tire flat spots during long storage. Consider removing the blade for sharpening — most NB landscapers offer blade sharpening services during winter months for $15-25.

Professional Maintenance Option: Many New Brunswick landscapers offer winter storage and maintenance services for $75-150, including pickup, full service, and spring delivery. This can be worthwhile for expensive mowers or if you lack proper storage space.

Taking these steps ensures your mower starts reliably next spring when the growing season begins in late May. Proper winter storage prevents costly repairs and extends your mower's life in New Brunswick's challenging climate.