The little 3.5 HP Tecumseh flat head (model WTPXS) on my pressure washer has started to gallop (rhythmically dropping RPM then increasing RPM) when not under load. It runs fine, but I find the galloping annoying.
I imagine it may be a matter of adjusting the governor springs, or maybe clearing a partially clogged jet.
Any experience with correcting a galloping flat head? thank you in advance!
doug