My bike takes too many kicks to start it
SOURCE: My Yamaha yz250F 07 starts first kick but back
I see: you changed the plug because it was backfiring.
Does it back fire when you let OFF the throttle after revving it, or does it back fire while being revved?
If it does it when you let off then Ollie's suggeston might do it. If that doesn't do it then check for dirt in your pilot jet.
If it back fires when revved up high could be dirt in your main jet.
SOURCE: My 2002 yz250f takes a
I would check sthe spark plug gap. Set it to 0.9mm
If too close it won't ignite properly also is the exhaust pipe standard? If not the timing and mixture will need adjusting.
Hope that helps.
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