Re: Prop size for 4-107
Check the tachometer as well. The tach on my boat is shot and reports 2000 rpm when the engine is actually turning 2800 rpm. I tested it using a digital tach measuring a point on the flywheel.
I've adapted, but I should also replace the tach someday.
boats that I sail on regularly: Pearson 28-2, Rondar 505, Yankee 30, Blanchard Junior