Dean
Member
There should be a screw (possibly with a spring over it, held on by the head of the screw and the body of the carb) that adjusts the air/fuel mixture.
Not sure if this adjustment works on engines this small, but on a car, you screw it in until it seats (DO NOT TIGHTEN!), then back it out 2 complete turns.
Start the engine and screw it in slowly until the engine starts to sputter, then back it out slowly and stop when the idle smooths out.
Unscrew an extra quarter turn and that's your baseline.
Drive the bike around for a while and keep an eye on gas milage, how the engine acts, how the power feels and the colour of the plug (black = too rich) and adjust accordingly until you hit the point to where the engine seems to be running at its most efficient.
Dean
Not sure if this adjustment works on engines this small, but on a car, you screw it in until it seats (DO NOT TIGHTEN!), then back it out 2 complete turns.
Start the engine and screw it in slowly until the engine starts to sputter, then back it out slowly and stop when the idle smooths out.
Unscrew an extra quarter turn and that's your baseline.
Drive the bike around for a while and keep an eye on gas milage, how the engine acts, how the power feels and the colour of the plug (black = too rich) and adjust accordingly until you hit the point to where the engine seems to be running at its most efficient.
Dean
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