Sigma cast pump adjustment June 08, 2018 06:41AM
What is the correct method to set the idle speed and bump spring on a sigma governor, which screw does what? On my current pump there is two obvious adjustment screws with caps on and then and couple of plugs (not taken them out yet).
I have an issue with the engine 'hunting' badly at anything more than idle and it's been suggested that the bump Spring could need adjusting.
Thanks



Edited 1 time(s). Last edit at 06/08/2018 06:47AM by dwayne.

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