non running Kohler CV490S

[Rickfrechette]

A recently acquired lawn mower has been sitting and won't start - new gas, new plug, new carb. Spins but won't start - occasional loud bang through the muffler after cranking it a lot. Any ideas?

 

[bertsmobile1]

Flywheel key broken so the spark is out of time.

 

[hlw49]

Was it running before it quit being used and set?