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    1979 Johnson 6hp Prop slip

    Oh brother, I bought this $50 Facebook motor (1979 Johnson 6hp) listed as low compression. New head gasket, fixed. Spark one cylinder, new coil fixed. Runs great but the motor gets to a faster speed and the prop slips, rpms up. At first I thought it was just weeds from the pond, but apparently...
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    1979 Johnson 6hp spark on 1 cylinder

    I picked up a 1979 Johnson 6hp that had low compression. It HAD spark on both cylinders. I replaced the head gasket and it started right up, but had spark on only one cylinder. I went thru and tested everything via this chart and advice from a youtube video. At first it seemed to me that a new...
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    1968 Johnson 6hp can't tilt engine up to stay

    Hi folks, Recently got a nice old 1968 6hp Johnson, when I'm done I like to tilt the engine up, prop out of the water. It has been fine, but now wants to plop back into the water. My transom is a bit on the squishy side allowing a little to and fro, but not too bad. My old 9.5 required me to...
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    Mystery small Johnson 65? 6hp?

    Hi folks, I picked up this mystery Johnson on Craigslist, I can't find any ID except the Seahorse on the cowl. Any ideas?
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    1970 Johnson 9.5 Gas Efficiency

    This summer with Gas Prices so crazy I decided to run my Johnson 4hp on my 12 ft Aluminum instead of the 9.5 (both 1970). I was startled at how efficient the the 4hp is compared to the 9.5 which I always thought used way too much gas, but ran well. And yes I realize the size difference, just...
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    1970 4hp Johnson low compression

    Hi folks, I have 2, 1970 4hp Johnsons. One runs great. The other seems to have low compression. 25-30 each cylinder. I put some oil in the cylinders and it came up a tiny bit, 33. I am trying this with throttle wide open, choke off. I'm wondering if the rings might be stuck so I am spraying PB...
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    1970 Johnson 4hp Carb jet mix-up

    Hi folks, Took apart my 4hp Johnson'd carb to clean as it has never run right and started to think maybe the jets are swapped, then I got confused which one was where... One is a nice taper, other is more like a needle. Thanks
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    70 Johnson 9.5 points?

    Hi folks, Last year my 1970 Johnson 9.5 which has been trouble free for 6 years or so started feeling like it was mis-firing when I pulled started it, slight kickback. So this year I figured I better check the points. I took off the flywheel, set the point cam at the little arrow lined up to...
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    1970 Johnson 4hp lower unit Oil type?

    1970 Johnson 4hp lower unit Oil type? Thanks
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    1975 Johnson 9.5 starts, quits gas in water

    Hi folks, My 1970 Johnson 9.5 has run great for the last 8 years or so on the pond. I drain the gas out of it every season, new lower end oil. Starts 1st or 2nd pull. All of a sudden it starts the same but will quit after 10 seconds or so. It will then be tough to start or I usually let it it...
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    1970 Johnson 9.5 pull rope and Pin

    The pull rope on my 1970 9.5 Johnson broke yesterday, I also lost the roll pin (it was loose fitting) Got a new rope and pin. Instructions I have found have the pin already installed, if I put the pin in as it sits I cannot use the flathead to wind counter clockwise, but I can if the pin is out...
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    Short Shaft/transom length

    Hi folks, I have a 1970 9.5 short shaft Johnson on a 12 foot older Smoker craft aluminum, transom length is 15.5 inches. The boat is only rated for a 7.5. When I first tried it out I sat on a milk crate with a tiller extension towards the middle of the boat. Seemed to work well. But when you...
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    1971 Johnson 4hp fuel pump reassembly help needed

    I thought I'd clean the "filter screen" for the gas and ended taking apart the fuel pump, not knowing it was a fuel pump (lol). I tried a couple of times to put it back together and it leaked, I was also suspicious about the small spring (which appears to be missing the cap) and how it sat...
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    1971 Johnson 4hp impeller drive shaft problem

    Tried my old 71 4hp Johnson (weedless, I believe) to give it a run, started and then quit after a few minutes on the boat. Started it up again and it quit in less than a minute, I suspected the impeller and heard some sizzling at the power head. Rowed back, took the engine off and pulled off...
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    88 Merc 20hp, chirp when killing engine

    Hi folks, This season I overheated, replaced the impeller, then the head cover gasket which sprung a leak after the impeller was replaced. It has been running well. But sometimes when I hit the kill button I hear a chirp. Doesn't sound healthy, sharp and and fairly loud. Any ideas? -ugmold
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    88 Merc 20hp Waterpump Seal question

    Hi folks, Had a impeller go in my 20hp 1988 Merc, bought a kit, lower unit came apart ok, but under the pump housing the drive shaft seals looked nasty, I dug around a bit and the top seal (I think there is 2) was wasted, spring sticking up. I got it out fairly cleanly. Looks like the one below...
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    88 Merc 20hp, need to remove tilit pin to raise

    I got my 88 Merc 20 on my Whaler after fixing I think the friction control. http://forums.iboats.com/showthread.php?t=564318 I have hitched the engine up to the old pulley system which works fine but I have a problem after I go out for a cruise when I try to pull the engine back up I have to...
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    1988 Mercury 20hp Friction Control

    Hi Folks, Having a problem with my 88 Merc Friction control, basically it does nothing. I can tap the lever with a hammer to get it to go from side to side but it does nothing. I loosened the bolt that holds the lever, but did not take it off, very tight fit to get it back on. So I thought...
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    13 Boston Whaler Hull Thru

    Hi Folks, I would like to replace the hull thru, water drain. I did this years ago, brass piece with the flange tool, but I was never very happy with the fit. I like this idea. http://www.iboats.com/Perko-Thru-Hull-Connection-For-Pipe/dm/*******.485749532--session_id.990759540--view_id.20664...
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    Gas Tank Vent? 69 Johnson 9.5

    Hi, I have a small 3 gallon gas tank I am, using for my 9.5 Johnson. The other day after a "put" around the pond I grabbed the tank and stored it under my deck as usual. The next morning the tank was wet and so was the area around it. Taking off the cap release pressure and I was wondering if I...
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