1 Answer

Motor problems
You'll need fresh gas at all times. If your gas is a season old, it needs to be drained and replaced with fresh fuel. Try starting it with fresh gas after the carburetor has been primed. That may fix the problem.

If you have fresh gas, prime the carburetor several times and pull the cord a few times. The mower should at least fire or 'pop' as they say, and if it doesn't, that generally means that the spark plug is bad. It will need to be replaced, and should ideally be replaced once per year.

Other things to check are fuel shut off valves, which if turned off won't allow any fuel to get to the carburetor; the throttle, which needs to move into the choke position initially or your mower won't start; and the emergency shut off handle which needs to be pulled and held on the main handle, or the mower will not start. Lastly, check the wire on the spark plug to make sure it is secure and tight.

Read more: Briggs & Stratton Lawn Mower Troubleshooting | eHow http://www.ehow.com/way_5406804_briggs-stratton-lawn-mower-troubleshooting.html#ixzz2UL8LAobo