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Old 05-07-2010, 12:46 AM
Whizzerd Whizzerd is offline
Motorized Bicycle Elite Member
Join Date: Nov 2009
Location: Muncie,IN
Posts: 101
Default Re: what is 4 cycling?

I'm no expert here but in 2 cycle model engines "4 cycling" is a rich mixture setting where the air/fuel mixture doesn't ignite every stroke. It's actually beneficial to longevity and you should notice under load like an incline the engine will break into a full 2 cycle for extra power. Without a mixture setting screw the HT engines require a carb dismantling to adjust the metering rod height to 'lean' or 'richen' the mixture.
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