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When I took the boat out for the first time this spring I noticed tack was reading higher than normal. Im running a 96 175 Johnson FastStrike. Anyhow I knocked on the tack with my knuckles and it dorpped down to normal so I take it needs replacing or could it be something else.
Keep an eye on it. What you can try is mark the spot where the pointer is and using a small screwdriver twist the selector a few times and then return it to the original spot. You may have a little corrosion on the contacts.
TY ChampioNman
biggfishh did you solve your tach problem? My is doing the exact same thing.
Have your tried the reccomendation? In the brackish air down there a quick turn of the dial may help.