Question about 2003 Aprilia RS 125

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Aprilllia rs 125 wont idle and when im riding it cuts out at low revs and sputters when riding

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Some things to try,
adjust the idle using the black knob on the carb,
check air filter is clean,
remove and clean carb

Posted on Oct 24, 2009


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Aprilia rs125 sits at low revs and then cuts out, why and how to fix?

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To keep my engine running i have to pull the throttle obviously to rev it, else it the engine cuts out, and when i ride it splutters and cuts out, so i kick down a gear n it starts again but then dies...

has the bike been sitting for some time? Sounds like a classic case of gummed up low speed jets in the carbs. Pull the carbs and clean then out.

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I guess youwillhaveto adjust the clutch cable so as to open the plates more at the pressure plates to let the clutch plate rotate freely instead of binding thus the low rpm.
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1 Answer

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ok buddy on carb will be a screw try fiddling with this screw till it runs ok also try changing the spark plug underneith the tank you can access this screw from the right side just on carb next to the idle screw black big one with a long flat head screw driver get back to me if no difference

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