Question about Honda CRF 450 R Motorcycles

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Hello, I actually have a small crf 50f and have started it in a year or so. Today after firing it up, I couldn't achieve full trottle without the bike sputtering out. I've drained and changed the fuel and change the spark plug. And although it's better it still doesn't stop bogging down without continuosly pumping the throttle. It does seem to run a little better if I leave the choke lever about half way between off and engaged. Any suggestions would be great! Thanks! Andy

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Disassemble the carburetor and clean it. The jets are partially gummed up from old gas that has evaporated leaving a varnish build up. If you can, soak the entire carb and parts in denatured alcohol for about an hour. Then clean with spray carb cleaner. Spray into every hole and jet in the carb. On re-assembly, lightly seat the throttle and air screws then open each of them one and one half turns. This is the factory setting. Please rate my answer. Thanks.

Posted on Aug 07, 2010

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