Originally Posted by 128auto

This starting problem is hit and miss, 8 out of 10 start fine. Sometimes I ride only 20 mins, shut the motor off and try to start it, it feels like the starter works so hard. If I don't start it the first 2 revs, it will take me a while, maybe 3 cranks? Then additional fuel and smoke came out the opened air cleaner.

Originally Posted by Warp Factor

If you have a tuner, one fix for that would be less timing advance at startup. When the engine is turning slowly enough, firing too far before the top of the piston stroke will kick the engine over backwards, momentarily turning your intake into your exhaust, and working against the starter.