Re: Johnson Tuning

[Mumbles]

When I had my KA 37 running on a stand once, I think the high speed needle on top was only out about a quarter turn or so for it to run right and it was very sensitive to any adjustment. I can’t remember how much the low speed needle was out. These motors don’t have a water pump but rely on the boats forward motion and propeller wash to force water thru the motor. It’s a pressure-vacuum system but the motor can be run on a stand if a garden hose is adapted to the pipe fitting on the bottom of the cylinders. Since they have a large rotary valve with sealing rings on the crankshaft, they need an 8:1 fuel mix. That’s one pint of oil to one gallon of gas.