Hi all
I have a Kazuma 150cc. It starts and idles fine. when I start to accelerate, it starts cutting out. it will continue to accelerate not like it should as it is constantly sputtering.I cleaned the carb that didn't help.So I bought a new carb and installed it, still no help. changed the fuel filter ,changed the spark plug, no help! OK guys where do I go next? is it posible my problem could be electrical and not fuel? Thanks in advance for your help Jim

 

The carb may have to be set to suit your bike. If you are sure the new carb is right, check all wires on the ignition circuit, including earths and ignition switch. Dry the coil and HT lead by leaving in the sun for a few hours, try it again. If it still is not right you will have to start fitting new parts, coil first, then cdi, then stator.

 

Check the fuel screw... turn it in until it stops(count the turns) and then turn it out 2 - 2 1/2 turns and see if it helps.. also let me know how many turns it was out stock.

Japanese spark plug?