Robert, Welcome to joys of Cotton ownership :-). If you get the chance, stop by one of the upcoming shows and find the Cotton Owners and Enthusiasts Club stand, where I'm sure you will find a sympathetic ear and perhaps a warm cuppa. Be careful, maybe you will catch the "Cotton bug" too!
In the meantime: Lots of good internet sites to identify JAP engine numbers. This is one of many!!!
According to your JAP engine number, should probably be IOZ/22940, IO = 350cc Overhead Valve, Z=1933. At first glance, it appears to be a 33 engine in a 32 frame. Must be a good story behind that somewhere in the mist of time.
Cheers, and Good Luck,
Barry Devereux wrote (22/01/2016 11:17:40):
Sorry Barry, forgot to say it was a twin port JAP.
Hi! Just acquired a Cotton, Reg. No. TSK 199, Frame No. 8128, Engine No. 10Z22940. Could anyone tell me anything about this machine, please?
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