I have a Universal 25XPB but tachometers are pretty much the same across manufacturers. I checked mine with a cheap optical tachometer. I used an adjustment screw on the back to get it fairly accurate.
Every now and then I check it by running the engine up to max rpm. The engine has a governor so there's little risk of damage. The max rpm for my 25XPB is 2900-3000. So when I max it out and the tach says 2900-3000 rpm, I know it's reading OK. Digital optical tachs are cheap. If you have a Harbor Freight close by, you can probably pick on up for about $35. Cheaper on Amazon. Dennis C. Touche' 35-1 #83 Mandeville, LA On Thu, Jul 19, 2018 at 5:28 PM, John Conklin via CnC-List < [email protected]> wrote: > Mine is way off! PO said Oh I just deal with it. He had a list in Nav. > table what to run/read Tach at and what RPM engine was actually doing. > > I would love to have things match up rather than check the sheet but was > told it was not possible? > > > > John > > S/V Halcyon /) ~ > > > >
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