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Old 05-27-2009, 10:15 AM   #152
Dave in Wi
Beastly Adventurer
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Joined: Feb 2007
Location: Madison WI (40 Square Miles Surrounded By Reality)
Oddometer: 2,052
Here is another carb-related fix. I haven't been through all the pages of this thread yet so if it's been posted already, I apologize. I did think this one up on my own, out of necessity.

Last weekend I was up at the cabin & tried to start my ATV (I know, but this tip is good for motorcycles as well!). It started but ran very rich, would only run with a lot of throttle and soon fouled the plug. Once it quit, I smelled gas. It was coming out the overflow. So I know the float needle was gummed up, dirty or stuck.

I tore into it and once I got to the carb found that the ridges on the float needle (like this one below) were scratched up and sticking. Maybe from vibration, don't know why.

So on a holiday weekend in rural central Wisconsin, there was no way to get a rebuild kit on short notice. What I did was carefully rub out the small scratches and burrs with a whetstone, made sure nothing was wrong with the float needle jet, and put it back together. It worked like a charm, ran great all weekend.

I will be getting a rebuild kit and repairing it properly, but this was a good temporary fix. Might come in handy for someone else someday.
Dave in WI
2002 ZRX1200R
1975 XL100
1988 DT50
"Daddy, it's five o'clock sometime!"
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