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    boat hydroplaning???

    hey gang. ive got a 16' fiberglass 85 Ozark fish and ski. v hull in the front, almost flat rear 1/3. here is my problem: after I get up on plane the boat feels like its "grabbing" the water and lists to the left. I steer right a little and it flattens out then it grabs and lists to the right, I...
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    new to me 2002 kawi ultra 130 wont run how to test fuel pump???

    hey guys I just picked up this pwc and its acting like its not getting fuel. sat for 5 yrs w out being used. drained old gas and she fires on fluid but I don't think the fuel pump is working .pulled the fuel lines off injectors and fuel does not squirt out lines when cranking. is there some way...
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    no compression on top cylinder???

    early 80s merc 70 hp 3 cyl. no compression on cyl 1, top cyl. the other 2 are around 125psi. guy said he was running the engine and heard a pop then putted back to the dock. does this sound like head gasket or sucking in air from bad top crank seal? did not seize up. thanks guys
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    tilt n trim fitment???

    hey gang. ive got a 1973 merc 85hp outboard w/ out tilt trim. I found one for sale for a good price but its off a 1995 merc 90hp. can anyone tell me if this will work for my 73? thanks, bradford
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    water deflecting off outboard and spraying over back sides of boat

    it didn't do this when I had my 85 merc 50hp on there. I 'upgraded' to a 73 merc 85hp and now this splashing is happening. I noticed that on the 50hp the leading edge of the lower mid section is shaped to cut through the water but on the old 85hp its pretty ugly as far as hydrodynamics. I cant...
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    1986 vro90 hp keeps blowing out port side power box. need elec wizard

    new to me 86 evinrude vro90 v4 90hp outboard. no spark on 2 port side cyls .took the box off the other side (it has 2 power boxes, one for 2 left cyls and one for 2 rt cyls) and plugged it in and I had spark so I got a used power box installed it and had spark on all 4 cyls. a few days later I...
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    strange gear slip when warm

    hey gang. so I made a good trade for a 1973 merc 850 85hp outboard. after some tinkering ive got her running like a champ in the test tank. when I put her in the water I immediately realized I had almost nothing in reverse. no grinding noise but only slight movement backwards. forward worked...
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    what does the cross pin slide do?

    hey guys. 73 merc 850 85hp outboard. part #55on parts diagram. its supposed to be there but it wasn't when I pulled bot end apart. shifts fine but I don't like missing parts. im pretty sure the p/o had bot end apart because it came apart very easily. can someone tell me what it does? thanks
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    unregulated voltage question

    hey guys. finally got my 1973 merc 850 85hp outboard up and running. the rectifier was shot so I replaced it w/ new one. I fired her up and checked voltage at battery and it was showing 18.+ volts of output at just over idle speed. from what ive read on other posts, this is an unregulated power...
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    quick engine swap question

    hey gang. ive got a customer who has a 76 mercuty 50 hp outboard w a short shaft and a late 60s merc 50 hp long shaft. the ss doesn't reach the water on his boat so he wants to put the powerhead from the ss on the body of the long shaft. is this gona work? thanks
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    whats with this nipple?

    hey gang. just picked up an old 1973 merc 850 85hp 4 cyl. I noticed that in the middle of the back plate (cyl head) there is a brass fitting that sticks off the engine. is this some sort of vacuum line or does it have to do w water flow? either way it looks like it should have a hose hooked to...
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    How To Test A Two-Wire Stator???

    how do you test a two wire stator? mine is from 73 85hp and there are no red or blue wires. the manual shows what you've written above, no mention of the 2 wrie stator test
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    #4 plug different than 1, 2, and 3

    hey gang. just picked up a 73 merc 850 4 cyl. after examining the plugs I noticed that 1, 2, and 3 looked perfect but on the #4 plug the porcelain was half dark(like the rest of the plugs) and half eggshell colored. should this lead me to believe that the crank seal on the bottom of the...
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    hull ventilation questions

    cant seem to find much on the subject. im not talking about venting fuel vapors. 1985 Ozark 16' fish-n-ski. . im wondering how deep should the bilge extend up the hull under the floor? as it stands there is a center stringer running up the middle of the boat. the lowest bilge area is off set...
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    first complete fiberglass floor transom help needed

    hey guys, Bradford here. so ive got an 84 Ozark 16" fishing boat. ive had it about 3 yrs. before I got it it had spent 8 yrs outside w no cover. after I removed the ecosystem that had developed in the boat I realized the floor was toast as I expected. I finally got around to getting it going...
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    water spraying from upper vent holes in lower unit

    I noticed that there is exhaust and water spritzing from the vent holes at the top of the lower unit. is this from a bad exhaust seal? 85 mercury 50hp 4cyl 2 stroke. thanks guys
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    tomos 4.8 water or air cooled?

    hey gang. anyone out there know if the tomos sportsman 4.8hp outboard is water or air cooler. im assuming its air cooled but I was watching a you tube video on another small tomos outboard and it looked as if there was the a jet of water spraying out of the engine as it does on my water cooled...
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    1984 50hp 4 cylinder lost power at wot

    quick history: I found this 16' Ozark w/ 50 hp merc ob a couple yrs ago sitting oun next to a barn uncovered. a mess. last reg was in 04. 120 lbs on each cyl. I replaced power board and stator. fired right up. cleaned fuel tank, tore down and soaked carbs. (did NOT replace gasket kit ), new...
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