motor stops when i stop the bike

One thing I'll add about adjusting the idle speed on the carb. Turn the throttle before turning the screw clockwise to increase.

mark090 said:

i recently got a motorized bicycle and the motor stops when i put in the clutch and stop and when im ready to go again i let out the clutch and go on the throttle and the motor just dies. Am i doing something wrong should i not be pulling in the clutch?

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Ouch,...your poor clutch, hows the buck?

If you have a 7 speed on your bike, use at least 3rd gear to pedal start, and 4 is better if you can pedal it from start. If I use lower gears 1st n 2nd there is not enough force to keep the
bike going when I pop the clutch from a low speed takeoff. Once you get going and the engine pops and you keep pedaling you will see what I mean. You will get used to what speed you need to be at to get the engine to turn over and pedal assist launch. Lower gears you max out pedaling too quickly, and the engine will sputter and fail as you cant put enough torque on engine to keep it going from slow takeoff.

You want to be able to pedal into where the power band starts to grab on your engine.

Adjust your idle setting and clean your air filter so the engine runs when you pull in the clutch.

I also found out that by puttin some Heavier tires

http://www.kmart.com/schwinn-26inch-x-2.125inch-cruiser-tire-with-kevlar/p-080W029801060001P

That this definitely helped tame the low end torque throbs that the engine puts out when you are cruising slowly. I don't need to disengage the engine when i cruise slow, well I never did, but it was really bad at around 3-6 mph. Even when I am going slow, it is still faster than I can pedal bike!! So watch it!!

My build vid.
http://www.youtube.com/watch?v=uyj4kvf7xck

http://www.youtube.com/watch?v=R9fb1lFPSwc