Was out last night and noticed the tach reading jumping around any ideas?
Was out last night and noticed the tach reading jumping around any ideas?
<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by seward »</td></tr><tr><td class="quote">Was out last night and noticed the tach reading jumping around any ideas?</td></tr></table>
WHICH 225 Mercury do you have? Carb, EFI, Optimax, Verado????
Serial number?
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
If this is an analog tachometer- check the wiring connections at the tach. Make sure they're clean and tight (a loss of voltage or ground will make the tach jump wildly).
If there's an adjustment pot on the back of the tach, OBSERVE THE SETTING. With a small, flat-blade screwdriver, move the adjuster ONE OR TWO postions, then return it to the original position.
See if problem is gone.....
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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