air filter - FixItWhy
Walk-behind lawn mower sitting on a grass lawn — the kind that often will not start after winter storage

Why Your Lawn Mower Won’t Start in Spring (and How to Fix It in Under an Hour)

Pulled the cord and got nothing? Old gas, a fouled spark plug, a clogged carburetor, and a dirty air filter cause 80% of spring mower failures. John’s six-step diagnosis – usually under an hour, $0-$15 in parts.