JD G110: Small backfire after turning off

[a_gunslinger]

Greetings.

About 5 seconds after turning off my G110 riding mower I usually get a backfire coming from front of engine. I just did a simple maintenaince on my G110 rising mower: fuel filter, new plug, air filter, fresh oil but no change in the condition. Common causes of this symptom?

Thanks!

 

[KennyV]

Low octane fuel, exhaust valve gets very hot and when ignition is shut off, the lean mixture will ignite on the valve..
Try a higher octane fuel, or various throttle settings when you shut down...
The backfire will eventually use up the muffler... :smile:KennyV

 

[a_gunslinger]

Thanks for the reply. Will test with some 93 octane and report back.

 

[Parkmower]

I found if you bump the throttle up a little just above idle it won't backfire