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    2009 merc 15hp 4 stroke recoil starter help

    Need help getting this back like its supposed to be. Motor was making a rattling sound, this is what the cause was. Pics or diagrams would be appreciated. I did find parts diagrams, but they are not much help on placement. Also, what is the part in the top pic for? It looks like its...
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    1987 Mercury classic 50 no power on top end.

    Ok, it's getting better. This motor had, or has multiple problems it seems. But, I am hanging in there. I will get this thing running right! Thanks for all or your help so far, it has been very valuable in my learning experience on this motor. Just decided to start a new post, since a lot...
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    2009 15hp 4 stroke adjust accelerator pump

    I have a 2009 15hp, tiller steer. I recently rebuilt the carb and changed the accrlerator pump diaphram. I need to adjust the diaphram. I found how to adjust the throttle linkage in my nanual, but not the accrlerator pump, or mixture screw? I think the mixture screw is behind a plug? Or is...
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    2009 15hp convert to short shaft?

    I have a 2009 merc 4stroke I bought attached to a jon. It is a long shaft. I would like to convert it to a short. Is that possible? Or, even cost effective? Or should I just try and sell or trade it for one?
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    Trying to sync a 1987 Classic 50 need a little help?

    Ok, I have 1987 Classic 50. From all the info I can find. My linkage adjustments look like this? I am going to go by this write up I found on this Forum! Awesome! Questions are. 34 degrees? Or, 21? I don't know what "Direct Charge" means, or how to tell this one is or not? It is a 1987...
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    Mercury Classic 50 not getting full throttlle?

    I have a 1987 Merc Classic 50 (45hp). I bought the boat about a year ago. Rebuilt the carbs, changed the fuel lines. Adjusted the carbs. boat only gets up to about 19 mph. Its a 17' bass tracker simi v. by the way. I had the exact same boat model before, and it would get about 25 or so on...
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    Deka DC31DT Maintenance? Charging Procedures?

    I just bought a Deka DC31DT Marine Master battery. It is a flooded cell battery. I can't seem to find any recommendations on charging, fluid levels? How often to check the electrolyte? Should I remove the caps when charging? Etc... I want to make sure it lasts, can somebody guide me in the...
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    87 classic 50 wire routing?

    I have a 87 classic 50. I just rebuilt the carbs and the wire routing looks kind of hinky to me. seems to be all in the way of the carbs inlet, and linkage. I don't think its supposed to be that way. Any body have any pics for reference? Especially the tilt and trim wiring as it routes...
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    87 Classic 50 carb float adjustment?

    I just acquired me a new/old fishing boat. Me and the wife are hoping to take it out for some fishing soon. It has been sitting up for a while, so I tore the carbs down, ordered new gaskets, and needles. They where full of fuel line pieces. I"ll be replacing all of the fuel lines also...
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    Basket case 1988 70hp?

    I have a basket case 70hp 1988 mercury OB. I disassembled this motor about a year ago for rebuilding. I had the block honed. Bought all the parts to rebuild. And there it set. My question is, just how important is it that each piston goes back where it came from, and rod, and so forth...
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    Mercury 39 water pumping troubles

    I have an old mercury 39 that I have been fixin up for my wifes Jon Boat. I rebuilt the whole bottom end on the thing. New water pump and all. Put it in the water tank... When turning it over with a drill, it pumps water, when it starts, it stops pumping water. I have the flush plug out...
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    How to check the main bearing ring seals?

    I'm in the beginning stages of a motor rebuild. Is there a way to check the main bearing ring seals? My kit did not come with new ones. Wonder should I get some. Thanks
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    1988 Mercury 70hp Rebuild, finally got my Block Back!

    Ok, I finally got my block back from the shop, bored out .015. New pistons and parts. Dang near all of them, and dang near all of my money out of my wallet! LOL. I ready to start rebuilding......Gonna need some pointers, never rebuilt an out board before. First question: Any suggestions on...
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    knocking the dust off an old 3.9 merc. Need Parts?

    I have and old 3.9 merc. I am trying to fix it up for a small river boat. It has potential. But I cant' find any parts by serial number? Can anybody help? I think its around a mid 60's model. I want to put in a new impeller, and rebuild the carb. It is also missing the drain and fill...
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    1988 Mercury 70hp,, What to check to see if its worth the trouble?

    I have a 1988 Mercury 70hp motor. Been sitting a while. Don't know if it runs. Don't have a manual. What should I check to see if it is even worth messing with? If it is worth it, I'll get a manual and go from there. Just don't want to spend time or money on a no win situation. I know the...
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    Compression 110/105/90?

    Re: Compression 110/105/90? I believe you are right. After further hair pullin, I found this wad of JB weld on the crank case.. I don't know much about these motors, so this might be hair brained but here goes. 2 strokes pull the fuel oil throught the case, correct? So, if this JB Weld...
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    Compression 110/105/90?

    Re: Compression 110/105/90? Ok, just to make sure I'm not still crossed up. Here are some pics. Small jet goes here under the screw, where normally would be a mixture screw? Larger jet goes here facing down, through the bowl gasket? Correct?
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    Are these the right spark plugs?

    I have a 70ESL-74M. Johnson. It has NGK BUHW-2 plugs in it. They look weird, and it's not running real smooth. Thinking maybe the carbs are dirty, but these plugs look strange. Motor has not ran exactly right since I've had it. Same plugs that I got it with. Compression is 105/110/90 top...
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    Compression 110/105/90?

    Is that bad? It's a 74 Johnson 70hp. Piston tops look clean, by flashlight?
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    74 Johnson 70hp electric fuel pump?

    I have a 74 Johnson 70 hp, I'm considering by passing the stock fuel pump, and installing an electric fuel pump. My fuel tank is a built in tank, and I want to get away from squeezing that primer bulb. Can this be done? What fuel pressure should I run? Any tips would be appreciated. Thanks
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