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Old 06-04-2010, 10:22 PM
nolan_speed nolan_speed is offline
Motorized Bicycle Member
Join Date: May 2010
Location: Seattle, WA
Posts: 30
Default Re: Still having heat problems :(

Sounds like it could be running lean, how's the plug look? The easiest way to richen the mixture (air/fuel not gas/oil) is to unscrew the part where the cable goes into the carb and remove the slide. Take the cable off the slide and remove the needle, there will be 5 or so groves in the top of the needle and a clip will be in one (probably the center one) carefully remove the clip and move it to a lower grove, you could just go one grove or go all the way to the bottom to see if it makes a difference.

Put the carb back together, take it for a ride and se if it's any cooler.

As far as the bogging when opening the throttle too fast, I think some of that is normal as these are super simple carbs.
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