If you're planning on working on your engine, pay particular attention to the venturi gasket (Part #1300 between the tank and backplate in John's view). They are small and can be easily damaged or lost -- probably more aggrevation can be attributed to this part than almost any other. Also be sure the reed is free, clean and does not have any creases. Be easy handed -- the parts are small and can be mangled if not careful.

A visit to the [link=http://www.coxmodels.com/prodinfo.asp?number=C01300]parts department [/link] at [link=http://www.coxmodels.com]COX models [/link] will give you a source of parts and additional exploded views.

Enjoy your engine.