Why does my scooter take forever to start up and won't idle correctly once it does start up?

by Christopher Bello
(Gainesville, FL)

First off this site is so cool, been looking it over for a bit. Anyways, I have a cheap Chinese scooter, and I am completely new to this scooter world (although I have maintained a motorized bicycle for awhile so I have very slight knowledge).

My scooter is hard to start electric start, although it sounds like it's trying to start, and seemingly impossible to start kick start, or maybe I am just doing it wrong with kickstart.

Once my scooter does start, after I play with the throttle and continue pressing the start button, it will turn off idling. I adjusted the idle screw to temporarily fix this issue, but now it idles at too high RPMs, but if I turn it down the engine won't idle at stop.

Those are the main problems. I charged the battery so that's not the issue, and I plan on replacing the spark plug, gear oil, and engine oil with American stuff. Do you happen to know what the issue could be and how to diagnose it?

Thanks a ton,

Comments for Why does my scooter take forever to start up and won't idle correctly once it does start up?

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Sep 23, 2010
Idle Mixture Screw
by: Jim Zeiser

You also have an idle mixture screw on the carburetor. It's near the front of the carb. If it's covered by a brass plug you may have to drill it. But first, try and cover the air filter part way with your hand. If the scooter starts and runs with your hand there your choke may not be working properly. Either the wire is off or the choke unit is bad. If you have to adjust your idle mixture, turn the screw out half a turn at a time and see if it helps.
Also have you checked your valve adjustment? Tight valves make a scooter hard to start.

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