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  1. S

    Fuels E5 and E10

    Hi Guys, I am in the UK and E5 and E10 fuels are being introduced into our country, I believe they are already in use in the States and the EU. I have 3 old Johnson outboards, a 20hp, 40hp and a 50hp all of early seventies vintage, what is your advice on using these new fuels please? Thanks...
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    50:1 or 40:1

    I am looking for a service manual for my 20hp 1973 Johnson, in the mean time can someone tell the correct fuel/oil ratio please. As I said in another I put it on a stand (in water) to see if it starts and runs which it did fine, I used a 40:1 ratio should I use a 50:1?
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    20hp Johnson throttle control

    Hi Guys, I have a 1973 20hp Johnson and I haven't used it for about 6 years, and as far as I can remember the throttle control makings were accurate ie stop, slow, shift, start and fast. I have put new oil in the gear box cleaned the plugs and new fuel, after some pulls it fired up great and...
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    Glue for fuel connections.

    Hi Guys, I have 3 Johnson motors, therefore 3 fuel tanks, one is fitted to my 20' hard boat and the fuel line goes through a grommet on the stern, the problem I have is that I have 2 different connections on the tanks. I decided to swap all 3 connection to the old Mercury type push/twist, the...
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    Steering on an Electro Shift 50hp Johnson '72'

    Hi Guys, about to connect the steering cable to my 50hp, I have tried 10mm wont go near it, tried UNC 3/8 and it damages the thread, Whit 3/8 is the nearest I can find but will not screw a full diameter of the bolt. Can anyone tell me the thread size or is it a special part, I cannot find it in...
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    Tachometer on a 50hp electro shift '72'

    For the last two years I have been building my boat up from a basic hull, I am fitting my 72 50hp Johnson electro-shift on the back and I need to be fitting gauges, starting with a tach and a volt meter. From the workshop manual it appears the the grey wire from the yellow plug goes to the tach...
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    OMC Type 'C' oil.

    Bit of advice please, I am in the UK and went to my local Power Boat Shop for some OMC Type C gear oil and I was told it had been superseded by some Premium type grade of oil can't remember the exact title, what's your advice guys please?
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    Tach and ammeter for a 50hp Johnson hydro electric..

    I am close to getting my boat and engine united for some trials, you guys gave me a lot of help and advice with my motor. I would like to fit a Tach and an ammeter, I would like to ask is there any particular ones to fit to the 50hp Johnson Hydro-Electric control. Also, I know the gray wire goes...
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    50hp electric shift, yellow plug

    I am trying to get hold of a remote control for my 50hp engine, they are as rare as the proverbial "rocking horse s_ _ _", I know I need a "hydro-electric". the are some out there with red plugs, can I change the wiring?
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    Engine ID

    Guys, I have posted this plea on the OMC site because I am trying to ID my engine. I have a 6 cylinder diesel engine fitted in my 33ft workboat, here is what I have. I have been told it is a 70hp Ford Mermaid engine and the only serial ID I have is MP470. Any ideas? skipper47
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    Engine ID

    Guys, Not sure if I am on the correct site, but here goes. I have a 33ft work boat with a 6 cylinder diesel, I am trying to ID the engine to try and get hold of manuals, here is what I have. I have been told that it is a 70hp Ford Mermaid, the only serial type numbers I have is MP470. Any...
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    40hp Johnson not firing

    I have a 1973 40hp Johnson which I cannot get to fire. I have replaced; Coils/laminations. Condensers. Points. Plugs. Any ideas? Much obliged. skipper47
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    Engine identification.

    Guys, You gave me lots of help with my Johnson outboards a couple of years back, I now have a bigger boat and require some help with the inboard engine ID. I have a GRP hulled cabin cruiser, the engine says "Mermaid" on it and I think is 70hp. Question is, is it a Ford Mermaid marine diesel...
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