Five Minute Fix – disc valve covers

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Words/Picture by Steve Cooper

Many 60s, 70s and 80s strokers run disc-valve induction systems with the carburettor sitting at the end of the crank. With this type of intake system itโ€™s vital that the chamber the carb sits it is airtight. If thereโ€™s air leakage the engine will be hard to set up, prone to racing and potentially can run disastrously weak. The gasket on the carb cover needs to be split and tear free. Ensure the rubber button that seals access to the carburettor-to-inlet clamp is present and snug (indicated by the screw driver). Finally check the carb top rubber is still supple and has not perished or cracked. From a Fizzy to an RG500 Gamma the same rules apply.

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