Power Lawn Mower Repair & Troubleshooting


Power lawn mowers are our noisy workhorses, cutting the lawn quickly and efficiently with a minimum of effort. The engines of small power mowers are pretty simple, so when a problem arises, as they surely will, a do-it-yourself repair is easy and will save you money. Follow a regular maintenance schedule with your mower to prevent minor catastrophes from ruining that perfect yard of your dreams.

Troubleshooting and Repair

Step 1

Check the gasoline and oil if the engine will not start. Insufficient fluid or stale gasoline can keep your engine from firing. Change the oil and gasoline if it has been in the engine for more than a month.

Step 2

Check the spark plug to make sure it is firing. Remove the spark plug from the engine, clean the bottom, replace it in the engine, and see if it fires. Replace the spark plug if necessary.

Step 3

Check the air filter if the mower erratically stops. Examine the air filter for excessive debris. If it is a paper air filter and is dirty, replace it with a new one. Sponge filters can be cleaned with warm, soapy water and left to dry.

Vibrating Mower

Step 1

Clean underneath the mower if it is vibrating excessively. Remove the spark plug so the engine does not start while you are under it. Use a putty knife to scrape excess grass from the deck.

Step 2

Tighten the bolt for the mower blade. Secure the blade in place with a block of wood so it does not turn when you are attempting to tighten it.

Step 3

Tighten all the nuts and bolts for the mower body, including the handle and levers.

Things You'll Need

  • Safety gloves
  • Safety glasses
  • Putty knife
  • Wrench
  • Screwdriver


  • All About Lawns
  • Jacks Small Engines: Do It Yourself Small Engine Repair
  • Yardener: Lawn Mower Maintenance
Keywords: power lawn mower, mower maintenance, mower repair

About this Author

Cleveland Van Cecil is a freelancer writer specializing in technology. He has been a freelance writer for three years and has published extensively on eHow.com, writing articles on subjects as diverse as boat motors and hydroponic gardening. Van Cecil has a Bachelor of Arts in liberal arts from Baldwin-Wallace College.