I decided to clean the vacu-jet carby on my 3HP B&S engine because I still wasn't happy that it was running as well as it might. Grumpys great advice in another thread enabled to get the motor running quite well but... a friend has a tiller with the same motor that seems to run better. Anyway, I discovered that the flange that mounts the carby to the engine is quite curved rather than flat and that the gasket was probably not sealing properly as a consequence. This could possibly explain the faster than expected idle (couldn't it?).

How should I go about flattening the flange? I thought of tapping with a hammer but this risks cracking the casting (I really don't know about how malleable the alloy casting might be). another option is to grind or file it flat enough for the new gasket to seal properly.

Any advice from those who have overcome this sort of problem before would be greatly appreciated.
Cheers

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Last edited by Beammeup; 07/12/11 01:04 PM.