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Getting My Bike to Run After Storage
Most common problem for a no start after sitting for a month or more is stale fuel. The fuel in the gas tank may be fine, there is usually enough volume of fuel in the gas tank to keep it from spoiling right away. But the fuel the engine runs with is in the bowl of the carburetor, and the fuel bowl only holds a very small amount.   The bowl is also vented, so the fuel loses good vapors even faster.
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Technical Advice
So the trick to getting your bike running is to get some fuel into the carburetor bowl that will still burn.  To do this you need to drain the stale fuel out.   Most carburetor bowls have a drain screw at the very bottom.
kymco Yup carburetor The carburetor on this Kymco model is very similar to many other mopeds. There is a rubber curtain around the carburetor bowl, but you can see the drain screw sticking out.    Some bowls have a bolt going straight up in the center that is removed to drain, but most are of this style.  Loosen the screw a few turns and you should see fuel dripping out of the screw or a drain hose.   After about 1/4 cup comes out, retighten the screw.  You may need to crank the engine over a few seconds to get fresh fuel to flow from the fuel tank and refill the carburetor before it will start.  Most mopeds have automatic fuel shutoff valves,  that is why it needs to crank a bit to refill the carb bowl.    

Scooter Therapy Inc
 
   
12 North Few Street  |  Madison, WI 53703    
toll free 1-800-411-1543  |  local 1-608-255-1520    

fax 1-608-255-1587  |  E-mail

Scooter Therapy Inc    

12 N. Few St     
Madison, WI 53703 

toll free 1-800-411-1543    
local 1-608-255-1520    
fax 1-608-255-1587    
E-mail

Hours: M-F, 9-6 Saturday, 10-3  CST



VISA, MASTERCARD, DISCOVERAMERICAN EXPRESS  & PAYPAL accepted


*Prices listed DO NOT include shipping and handling fees.
Most shipping is by priority mail.



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Scooter Therapy inc.


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