Hey guys, I have a Kawasaki FR651V that seems to be running rich after installing a new carb last fall. The plugs show carbon build up after only about 25 hours of run time.
Last weekend I adjusted the valve lash, did an oil change and replaced the plugs. I’m assuming that I need to adjust the air/fuel ratio but I’m finding mixed info on how to do this. Anyone have a good procedure to follow?
Not sure there is any air / fuel ration adjustment but I agree with Slomo assessment, be sure your air cleaner is clean also. Running rich will not give you blue smoke in my opinion, running rich will not run well at all and will be struggling to keep at idle too.
Today’s carburetors are not adjustable for fuel mixture (EPA regs). Possibly the wrong carburetor, i.e., aftermarket. Dirty carburetor or choke not adjusted properly.
Running rich will make the spark plugs appear to be sooty. The soot is unburned fuel.