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    Tach and charging system HELP please

    I have a 1984 90hp johnson V4 on a 16ft fiberglass bass boat, and i have recently developed charging? problems and tach problems. i originally had a problem with fuel delivery(bad pump) and low rpms(3800 max @w.o.t.). fuel problem is fixed and the motor runs like new, however now my tach will...
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    Could it be a bad tach????????????????

    I have a 1984 johnson 90horse on a 16.5ft fiberglass bass boat. I was wondering if my tach could be bad. When i got the boat and had the motor installed the tach worked then after a few months it quit, well i had new steering put on and the tach started working again. My motor stamp states 90hp...
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    low rpms and low speed at wot

    ok, so heres my story; i own a 1984 16ft trophy bass boat(fiberglass made by bayliner)and i bought a 1984 90hp johnson last year that was rebuilt by a reputable and established dealer. During the 20hr breakin period the tech told me not to run it over 4500 rpm and to move the throttle around so...
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