Can anyone tell me where I can get a portable tach or easy way to check rpms at WOT on Tohatsu M40C 40hp w/tiller and electric start. <br />Thanks!<br /> Mike E
Some of the multimeters available (both analog and digital) copes with this as well.<br /><br />A Google search returns several, and at the same time you'll get Volts, Apms, dwell, Ohms etc.<br />If you're going to use it once in a while for diagnostics, a multipurpose instrument would be better value.