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    Strange power loss 1991 Yamaha 25MSHP

    They were separate occurrences that happened back to back. I was trying to be thorough about the motors behavior before the problems started
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    Strange power loss 1991 Yamaha 25MSHP

    I’ve been having a mind numbingly odd issue with my Yamaha 25hp for the last month or so. I ran out of gas at WOT about 300 yds from the boat ramp. Tried to get the motor started, failed. Got it back to the ramp, busted my bowl gasket due to it being flooded. Rebuilt the carb. Since the...
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    1991 Yamaha 25mshp 2 Stroke Emergency Signal Light

    The folks over at Crowley Marine were able to get it answered. Makes sense, as there was no water running through it at the time. Posting this in hopes that it helps someone in the future. Thanks all
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    1991 Yamaha 25mshp 2 Stroke Emergency Signal Light

    I believe the imp shredded while using a bad water hose performing repairs. Not enough water getting in I guess. I'll be dropping the LU this week. Hopefully all the little chunks will turn up without issue. Unfortunately Yammy's website does not have manuals dating back far enough for my model...
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    1991 Yamaha 25mshp 2 Stroke Emergency Signal Light

    My main question is: does anyone definitively know what this indicator light is trying to warn me of? If it's a low oil level or temp gauge then I know it is a faulty indicator, but if it is an indicator for no/low oil pressure or water pressure, then I know I've got a problem on my hands...
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    1991 Yamaha 25mshp 2 Stroke Emergency Signal Light

    The tank was more than halfway full. I'm thinking I'll drain the tank, clean, refill with good fresh oil, and check again. I'm debating on deleting the oiler system all together. The fact that this light comes on so consistently with the flywheel makes me skeptical of how much information it...
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    1991 Yamaha 25mshp 2 Stroke Emergency Signal Light

    This could be a stupid question, but would anyone be able to enlighten me as to what the emergency signal light... signals? Last night I took my 25 2 stroke out for the first time since thanksgiving, and the first time since rebuilding the fuel pump. My impeller was shredded and the motor was...
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    Yamaha 25MSHP Fuel Pump

    Hello. I have been unable to locate a rebuild kit or part number for the fuel pump on my 1991 Yamaha 25hp 2 stroke. I have called up my local yam dealer and came up short handed. I have seen people on this forum talk about rebuilding or replacing them, but I have had no such luck finding a kit...
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    Water in lower? Yamaha 4

    Took it out on the water. The impeller is not nearly as powerful or cold as I’d like. What other seals should I be checking out? New housing gasket and new housing. I’ve blown out the passage ways with an air compressor. Surely the water outside of the housing has something to do with it…. Right?
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    Water in lower? Yamaha 4

    no water in lower oil. Lower seal is still good
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    Water in lower? Yamaha 4

    Very general question that I have not been able to find the answer to online: Should there be water in the lower outside the impeller housing? I have been fighting with a 4hp trying to get it to pump water. New housing and a second new impeller and I’m finally getting water inside a bucket…...
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    Yamaha 4hp 2 Stroke Powerhead Removal

    Before I replaced the impeller I had some water coming out, but not nearly enough. After replacing I had the same amount, if not less. I then shoved a pipe cleaner as far in the TT as I could and the water flow stopped completely. This is why I suspect an internal passageway is severely blocked...
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    Yamaha 4hp 2 Stroke Powerhead Removal

    I’ve pulled the CDI, carb, gas tank, pull start, everything. I have removed every bolt I can find. Do I need to hit it with the pry bar, or is there a secret bolt I’m missing?
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    Yamaha 4hp 2 Stroke Powerhead Removal

    I have a 1993 (according to model number) 2 stroke Yamaha 4hp. I am trying to figure out why it’s not putting water out through the tell tale (I’ve replaced and rechecked the impeller 3 times). After exhausting my options I’ve decided to remove the powerhead to take a closer look at the...
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    Clicking noise in neutral

    After toying with it for a bit I realized the clutch was not fully engaged in reverse when I attached the linkage with the barrel nut. After prying the lower linkage into reverse while spinning the prop I was able to get everything synced up correctly. No more clicks/rattles/knocks in neural...
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    Clicking noise in neutral

    Just disconnected the linkage, put lower and shifter in reverse, and reconnected. Same issue, but I noticed that if I push the shifter a little in the “reverse” direction the noise stops. I have very little understanding of lower unit gearboxes, but it is definitely an issue with the linkage...
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    Clicking noise in neutral

    After dropping my lower unit on my 1991 25hp Yamaha 2 stroke (25MSHP) to replace my impeller - which had no blades remaining - I was dismayed to hear an awful rattling/clicking noise after putting the lower back on. I’m assuming I screwed something up in the linkage... but I’m not sure what. I...
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    1958 18hp Fastwin Cuts Out

    I agree, they do seem to be set too rich. Definitely the next thing I'll be looking into once I figure out the tank/fuel issue.
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    1958 18hp Fastwin Cuts Out

    1958 Evinrude Fastwin 18hp model 15024 2 stroke, running 24:1 mixture This motor uses an old metal pressure style tank that as far as I can tell does not leak. This is my first 'pressure tank' motor and I'm still figuring out how the system works. My Fastwin will run - rough but run - for...
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    1958 Fastwin Not Getting Fuel

    Sorry, wrong nomenclature. Manuel fuel feed is what I was referring too
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