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  1. R

    Troubleshooting a tachometer

    I have a 1988 Evinrude 88 SPL with an omc tach. The boat has only been used in FRESH water service. The tach was installed by me (shadetree boat mechanic) in spring of 10' and worked correctly that season, but at the begining of the season it was giving me a lower reading under the same...
  2. R

    4" pitch drop - 450 rpm rise?

    Hi! I have an 1988 Envinrude 88 HP 2 stroke (88SPL). My boat is a 17' 1988 glassmaster center console. The boat has only seen trailer freshwater use (clean bottom, no paint) When I bought the boat used 2 years ago it had a 19 pitch michigan wheel vortex and no tachometer. I had an incident...
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