Question about Motorcycles
I can get the scooter to start but when you give it a little throttle to move off it cuts out.
Make sure the airbox and filter are in place and securely attached to the carburetor. Check that the carburetor is secure in the intake. Make sure no vacuum hoses are missing or ports are left uncapped. Verify that the spark plug cap, ignition coil connectors, stator connections, and grounds are not loose. The fuel lines/filter could be partially clogged. The float level (in the carb) could be set too low. The carburetor may need to be cleaned. Carburetor jetting or adjustments could be off.
Posted on Jan 31, 2014
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Posted on Jan 02, 2017
SOURCE: SUNL 50CC SCOOTER
You may need to adjust the fuel/air ratio. There is a small screw under the pull starter facing horizontally (its behind the plastic air filter cover, but accessable) adjust either clockwise or counter clockwise in small increments and give it gas and see if it dies or boggs down. Also check that spark plug is clean and not fouled, and air filter is clean and oiled.
Posted on Jul 28, 2008
Here's the deal. I have never even heard of your bike brand but I have 18 years in bike repair. If you promise not to give me anything less than a "helpful" rating I will tell you how to do the fix based on the assumption that the bike has a standard carb and not a CV carb. The standard carb has a top "cap" that unscrews from the center of the carb body.
ALWAYS have a fire extinguisher on hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).
Drain the carburetor. There should be a screw on the lower side or bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine. Now unscrew the top cap and pull the slide out of the throat of the carb. When you re-install the slide, be sure the long notch on the side of the slide lines up with the small pin inside the throat of the carb.
Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Before putting the slide back in the throat of the carb, move the clip on the jet needle one notch lower. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.
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Posted on Jun 09, 2009
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