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    Johnson 90hp flywheel bad?

    I can get it $150 to $200 new on ebay. Or like $50 used but would get new.
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    Johnson 90hp flywheel bad?

    Thx. Will look in the factory repair manual a bit to see more. Maybe will replace upper and lower out of caution. VRO was taken out 20 years ago, I mix 50:1 oil in gas.
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    Johnson 90hp flywheel bad?

    Would there be a knocking if camshaft itself was bad? Everything I have seen is flywheel play with rattle is probably the upper bearing, and if no knocking crankshaft is probably fine. But nothing has been definitive. Rattle/tapping just started within last 2 hours of use. Does it take special...
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    Johnson 90hp flywheel bad?

    All compression 115 to 119 (got a new gauge). Gear oil isn't leaking and has about 2 to 3 hours on it since changed. Next step take off flywheel and look for problems? Are there bearings between flywheel and lower unit? Wonder if bearing (3 or 11 in diagram below) maybe are bad? What type...
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    Johnson 90hp flywheel bad?

    1985 90hp Johnson v4. It makes a rattling/ticking noise in the water. It is more noticeable if you are going kind of slow then accelerate a little (louder during the acceleration phase). Increases in frequency with increasing RPM (usually... see below for exception). Took the cover...
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    Bad stator or not?

    1985 Johnson v4 90hp. Heard a rattle today taking off from the dock. Sounded "tinny" like metal on metal (like the flywheel and flywheel nut). Got slightly louder with increasing RPM but otherwise ran fine. Drove about 3 miles. Shut motor off and sat an hour. Started motor and rattle was...
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    1985 Johnson 90hp tach problem

    After a bunch of testing it seems it was the regulator/rectifier. So I just got done installing an OEM rectifier/regulator. There are two yellow wires on the part. There is no yellow/gray wire. Does it matter which of the yellow wires I connect to the yellow/gray connection on the terminal strip?
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    1985 Johnson 90hp tach problem

    Was typing this out as trying things, ended up a little longer than anticipated. Battery was 12.8 volts at rest. Turned key to accessory and it was 12.8 v. Ran it at idle about 1000 rpm and it was 13.2 v. Put it in gear to about 2000 rpm and battery voltage just kept climbing for about 5...
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    1985 Johnson 90hp tach problem

    Duplicate
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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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    Intermittent tachometer, 1985 Johnson 90hp

    Took the boat out a couple days ago for the first time this year. It is a 1985 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...
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    Tilt/trim manual hydraulic screw won't tighten

    Got the snap washer out. I have a pair of pliers designed for those, but was only able to get one side in the hole because the hole is small and the washer is in there a ways. But got it out of the groove enough to get the whole thing out with needle nose pliers. I actually got the screw...
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    Tilt/trim manual hydraulic screw won't tighten

    Doing a new thread with a better description of the problem. 90 hp Johnson, 1986 The screw used to manually raise and lower the motor won't tighten. It leaks fluid now when the motor is raised or lowered, manually or using the trim/tilt button. This wasn't a problem before today (not...
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    Trim problem, down works but not up

    Swapped the relays and it is the same. So are electric motor or switch? How do I test those?
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    Trim problem, down works but not up

    Are the relays for this under the motor cover? I have done some work on the motor the last few years but nothing electrical. For sure relays this year range, or solenoids?
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    Trim problem, down works but not up

    1986 Johnson 90 hp v4. Down works but not up to trim/tilt motor. It worked intermittently today for about a ten minute period in the water, then the up stopped working all together. I am thinking a solenoid (or relay, not sure which is in this motor). Would down work if the electric motor...
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    Johnson 90 hp difficulty starting when warm

    I have a 1985 Johnson 90 HP V4. Parents owned it 30 years, new to me as of spring 2018. No hour meter, but probably about 200-250 hours on it. Typically we drive it 5-10 minutes, then stop for 20+ minutes before starting again. They used it the same (usually driving 5 min or less, actually...
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    Trim sender wiring on Johnson 90 HP

    I have a new-to-me 1985 boat, with a 1985 90HP Johnson V4 outboard. I just put on a new trim sending unit, part number 583358. I put the muffs on and ran it off the hose in the driveway to test it out along with a new rectifier/regulator I just instsalled, and it seems to work, but I had a...
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