Briggs and Stratton Mower engine won’t start when hot

[steve0701]

Failure to restart when hot is the main symptom of vapor lock. The hot engine and lack of flowing fuel vaporizes what should have remained as a liquid. It' happens more redily if you are still using a winter fuel blend. Restarting will be difficult.

 

[Rivets]

On those engines the breather is on the other side of the engine, no need to remove the carb/tank to get to it. As Star said, the next time it won’t restart, check for spark. Common problem on those older engines is a coil that develops a hot short or hot open, which would mean replacing the coil if you find no spark.

 

[albanian]

Hi it does have an air filter??
It was removed so I could take the photo of it a bit better
Cheers?

Re-gap the spark plug. Had a push trimmer that wouldn't start hot and when I re-gapped it starts everytime now.