Is there a relatively easy way (short of a timing light I guess) to determine the RPM of my lawn mower's engine? (6.75 HP Briggs & Stratton, in a Craftsman model 917.377593). I tried comparing the tone of the engine with a known note on my guitar and came up with either 750 or 1500, but I don't know how accurate that could be.)
ALSO, speaking of that model mower, is there a way to fully disconnect the power drive from the drive wheels? I don't mean to just shut the power drive off, because with the power drive off there is quite a bit of braking force on the drive wheels, making it tough to push the thing without the power drive engaged. The power drive creeps along at barely over 2 mph and I'd just like to see how I can fare with the thing rolling free.)
Happy 4th,
1s & 0s