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  1. W

    Rattle that changes with RPM -Johnson 90hp

    Took boat out for first time this year. 1985 Johnson 90hp v4. Faint rattle or tapping sound that gets faster but not really louder with increasing RPM. Not present at idle. Motor runs fine except for this rattle. It seems like more of a plastic sound vs a metal sound. Toward end of last...
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    1985 Johnson 90hp tach problem

    Motor is a 1985 model year 90 hp v4 Johnson two stroke. Took boat out today and when it was idling and when I was going very slow after putting it the water the tach worked. After leaving the dock starting to accelerate it dropped to zero. Speed was about 5 mph. As I sped up more to 10-15...
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    How to test stator?

    Took the boat out today for the first time this year. It is a 1986 model year 90 hp v4 Johnson two stroke. After driving a few minutes I saw the tachometer wasn't working. We continued for a few more minutes, then I slowed down and once it was in neutral before shutting the motor off the...
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    Losing fluid

    1986 Johnson 90 hp. I was having a problem with trim/tilt. I think I got that fixed, but in the process released the screw to manually raise and lower the motor. Now the screw (inside the hole where you can see a bit of fluid coming out) won't tighten. I can't get it out, either. It is...
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    What type of gas to use?

    I can get no ethanol 88 octane gas from Fleet Farm. Is it suitable for a 1985 Johnson 90 HP V4 outboard? Or should I stick with 91 octane no ethanol? There is about a 30 cent per gallon difference, which is pretty big considering the main lake I go on is large and I use about 3 gallons each...
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    Johnson trim sender

    I have a new-to-me 1985 boat, with a 1985 90HP Johnson V4 outboard. It needs a new trim sending unit, part number 583358. It was discontinued a couple years ago and I have only found one place that has it, but it is $180 shipped (about double the price it was just a couple years ago before being...
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