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  1. O

    04 f115 down on rpm

    I have a yamaha f115 in May it was reaching 5200 rpm with a 21 prop and around 5800 with a 17. Top speed 40 with 2 ppl and fuel. A little while afterwards I had to have the lower unit rebuilt. The mechanic had to go back in and work on the lowera second time.After that time I am now getting 4500...
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    2004 yamaha f115 trim seal leak

    So my trim seals were leaking this spring. Ordered new caps and seals. Im winterizing the boat today. Where the trim rods push into the seals. There is fluid coming up around both rods. How can new seals be leaking there already. Any help appreciated.
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    2004 yamaha f115 prop question.

    I have a 04 f115 on 22x72 express vx22 mod v. I just bought the boat 2 months ago. Ive noticed im only getting 5200 rpm. The prop on the engine is a Michigan wheel vortex prop 12.75 x 21. It came with another prop. Its a 13.75 x15 quicksilver prop. Looking for recommendations on which prop to...
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    Optimax oil on fins

    So I took the boat to a shop and they said it was the oil pump. I let it set motor down and oil is all over the fin. I will try to post pics . Just wondering if you guys think its the pump or something else. This is a 2012 2 stroke opti dfi
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    Help reading dealer printout

    From my research 136 isn't over heating. I took the boat out last night and no issues at all.
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    Help reading dealer printout

    It won't let me post pics for some reason.
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    Help reading dealer printout

    Here's pics
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    Help reading dealer printout

    I have a 2011 150 opti 2stroke dfi. I had the mechanic hook it up. It says port head overheat 136 degrees. It only did it one time at 1600 rpm. The dealer took it out and couldn't get it to do it again. He recommended pulling thermostats and cleaning them out. I will post pics of the readout...
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    2012 mercury 150 optimal oil leak at bolt

    There's a bolt on either side or the engine and 1 is leaking. I'm not sure what the bolt is called. I will post 2 pics of the bolt I'm wondering how to stop the leak. I've tried over and over to post a pic and it won't let me.any help on the leak is appreciated
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    Suzuki df20a water in fuel

    I didn't get any warning lights or buzzers on the lake. The motor just coughed and died wouldn't start. I looked at it and found water in the fuel. I drained the blue canister the fuel lines run to. Drained the fuel tank and started over with fresh gas. The engine still won't start it just...
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    Suzuki df20a water pump issues and no buzzer

    So i had a problem that the pump stopped pumping. There was no buzzer warning of the situation. I replaced the pump pump housing and cup. It now pumps water for a few minutes then stops. Im getting a single red light on the engine. But still no buzzer has the warning buzzer quit working. And im...
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    Mercury 150 xr6 prop help

    I have a 05 xr6 with the turbo 1 prop. M14 and 1/4x19 the prop blades look great but the prop tube appears to be warped or bent. When you spin the prop by hand you can see its out of round. The prop shaft looks true and the blades look great its just the tube. I can't figure out how it would...
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    2004 mercury 15hp 4stroke compression numbers

    So I just checked the compression on this engine. It was around 110 on both cylinders.This seems low from what im reading they should be The engine starts ane runs good just wondering why so low
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    2004 mercury 15hp 4stroke dipstick tube popping out

    I have a problem with the tube popping out. I can run for about 5 minutes and the engine will sputter it almost sounds like a light backfire and blow out the dipstick tube and proceed to blow oil out. I really hope the engine isnt headed for a rebuild. I was wondering what might be causing this...
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    2004 mercury 15hp 4stroke oil

    hi guys im looking to change the oil on my carbureated 15hp 4stroke. Ive seen some websites have 25w40 listed and others have 10w30. Im wondering what would be better for my motor. also some say conventional and others say semi synthetic. just trying to make sure i get the right oil thanks
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    2000 70hp jhonson No start

    Alright guys I have this 2000 70hp jhonson that wont start. It won't even crank. I moved a battery cable and turned over so I tightened the cables now I have nothing. I took the battery out of my truck and tried it nothing again. I tried jumping the solenoid and I have nothing. so I put a new...
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    2004 mercury 15hp 4stroke hard start

    hey guys this engine is on a boat I bought its a kicker motor. The engine runs great and never dies once started and ran. The problem is cold starts it just doesn't want to start very easy. It takes alot of cranking and choking and it will finally start. Ive never messed with a 4stroke would...
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    2009 Mercer 150hp vs 08 Yamaha 115

    Im looking at different boats 1 has a 09 150 2stroke mercury. The other has a 08 4stroke Yamaha. What would your choice of the 2 be and why. Ive narrowed it down to these 2 boats and im torn on the engines
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    2008 Yamaha 115hp

    im looking at a boat with 115hp 4stroke Yamaha on it. The engine looks very clean is there anything to look out for. were the Yamaha motors pretty good in that year. thanks
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    1998 honda 130hp

    hey guys im looking at a boat with a 1998 honda 130hp. is there any known problems with these engines. I know next to nothing about honda outboards.I am kinda concerned about buying a 22 year old engine. Thanks fornthe help
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