New guy with an old scooter  By  daveman (Read 491 times)

You may not need to get a new carb try adjusting it first. The Enricher(choke) by default when cold should be retracted and feeds extra fuel for starting a cold motor. As soon as the motor starts it feeds voltage to the enricher until the motor is shut off SO As the motor warms up from a cold start within 3-4 minutes the Enricher plunger extends and shuts off the extra fuel.

After the enricher shuts off the extra fuel it is only the PILOT JET that is feeding fuel to the motor.

So if the idle is erratic you either have an AIR LEAK and or the carbs Fuel Ratio Mixture needs to be adjusted because if the rpms are going up and down it is LEAN. So adjusting the mixture screw COUNTER CLOCKWISE may fix you erratic idle. Now the idle should not be so high that the rear wheel is spinning if it is spinning the idle is to high. USE the IDLE SPEED screw on the carb the screw on the right side of the carb with the SPRING UNDER neath turn that counter clockwise to lower clockwise to raise the idle.

scooterdoc.proboards.com/thread/1499/4ts-carb-tuning

The Speedo it may be that the Cable has come loose behind the speedo and or by the SPEEDO HUB by the wheel.


CARBS ARE A DIME A DOZEN: You need a 18mm for the 50cc

Here is one and it is a good price.

www.amazon.com/50cc-18mm-Carburetor-49cc-Scooter/dp/B004J5CJVA

Welcome aboard!!!