Plan the perfect garden with our interactive tool →

Lawn Mower Won't Start After Winter

...
Jupiterimages/Photos.com/Getty Images

A lawn mower may not start after being stored for winter for any one of a number of reasons. One way to narrow down the cause of not starting is to work through the common issues until you can get your mower running again. There are a few specific issues that can prevent a mower from starting after sitting out the off-season.

Stale Gas

Remove any gas left in the tank from the previous year. At the end of each season, the fuel tank should be drained and the mower should be run until all of the gas in the system is burned off. Stale gas can cause a sputtering engine, or completely prevent the mower from turning over.

Spark Plug

Replace your lawn mower's spark plug. Left unused, the contacts on the plug can become corroded or rusted and prevent the mower from igniting fuel. Remove the spark plug using a spark plug socket, and purchase a replacement from most any gardening supply store. While you have the plug out, double-check the cable that attaches to the back of the plug for any signs of corrosion or insect damage.

Oil

Lubricate the lawn mower to protect its moving parts and prevent friction damage. Oil left over during the off-season can thicken and cause engine issues. Change the oil in your mower yearly. Remove the oil plug and drain the old oil. Refill the engine with the proper type and amount of oil, as per your user manual.

Blade Obstructions

Over time, grass and debris can become trapped on and around the lawn mower blade. This can prevent the blade from turning, and may manifest itself in an engine that will not turn over and start. Raise your mower on cinder blocks and examine the underside for any signs of caked grass clippings or debris impeding the blade. Clean the underside as best you can with a screwdriver or putty knife, and then use a garden hose to wash the rest of the grass or debris away. Cover the engine with a garbage bag tied with a bungee cord to prevent any of the electrical components from getting wet. Allow the mower to dry, and then attempt to start the engine.

Related Articles

My Hayter Lawn Mower Won't Start
My Hayter Lawn Mower Won't Start
Troubleshooting a Craftsman Riding Lawn Mower
Troubleshooting a Craftsman Riding Lawn Mower
Why Does My Lawn Mower Keep Stalling?
Why Does My Lawn Mower Keep Stalling?
How to Fix a Stuck Lawn Mower Engine
How to Fix a Stuck Lawn Mower Engine
How to Get Bad Gas Out of a Push Mower
How to Get Bad Gas Out of a Push Mower
How to Repair a Toro Lawnmower That Stalls After Starting
How to Repair a Toro Lawnmower That Stalls After Starting
How to Troubleshoot a Craftsman Push Mower That Won't Start
How to Troubleshoot a Craftsman Push Mower That Won't...
How to Rebuild a Briggs & Stratton 12 HP Carburetor
How to Rebuild a Briggs & Stratton 12 HP Carburetor
Problems With a Cub Cadet SR621
Problems With a Cub Cadet SR621
What Are the Symptoms of a Thrown Rod in a Riding Lawn Mower?
What Are the Symptoms of a Thrown Rod in a Riding Lawn...
How to Change the Oil on a MTD Riding Lawnmower
How to Change the Oil on a MTD Riding Lawnmower
How to Troubleshoot a Gravely Zero Turn Lawn Mower
How to Troubleshoot a Gravely Zero Turn Lawn Mower
How to Clean a Gas Tank on a Lawn Mower
How to Clean a Gas Tank on a Lawn Mower
How to Keep a Lawn Mower Deck From Rusting Through
How to Keep a Lawn Mower Deck From Rusting Through
Garden Guides
×