How Are Engine Hours Calculated
How Are Engine Hours Calculated . #14 · feb 16, 2001. Pwc hour metters reflect hobbs time not tach time. Internal combustion engine (ja304) chapter 4 from www.slideshare.net Is there a rule of thumb used by manufacturers to determine actual hours under full load? 2 multiply the hours by a factor of 60 to get an estimate of how many miles the engine has traveled. The engine hours can be found on the gauges on the console.