I have always run my Boxxer 421 wide open throttle knowing it was over the recommended 3000 rpm, but never really knowing how much over. I purchased a tachometer off of E-bay for about 20.00 and installed it. I found out full throttle was about 3,360 rpms so I've been cranking it down a little on most jobs. Yesterday I cleaned over 1,000 sq. ft. job and operated at exactly 3,000 rpms. Not only did I use what seemed like considerably less gas on the job an added benefit was my machine bypassed...
Tinytach. Why I like it.
Tinytach. Why I like it.