My 50cc wont start at all

Ok I just transformed my cruzer to a btr and it hasent been run for almost a week and now it won't start at all! I even rode down the biggest hill I could find with the cluch open the entire way down no sputering help please! I got a race on fryday and I can't let the other guy win (its to see who's the leader of our mb club).wee.
Ps I need smaller sprocket anybody know where to get a smaller one? Th stock one I'm runing is too slow
 
Are you talking about a happytime engine?
YOU need to remove the sparkplug and try to turn the rear wheel.
Does the piston go up and down.
If NO your chain is jammed in the small drive gear cover.
If the piston does go up and down.
You need spark, fuel, and air to make the engine run.
Read post number four by vader.
http://motorbicycling.com/showthread.php?t=13953
 
Ok new problem, probably should go to swap and shop but I've somehow lost the rear mount plate thingy that clamps the moto around the seat post tube! Please help ill buy one for 5$
 
it woul probably be quicker if you went to the hardware store. look in the pipe or electrical departments. im almost positive you will find the bracket that will fit. im thinking at the worst they might be thin but you can always double them up. its where i found the bracket for my large dia. front down tube.
Good luck..
 
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