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    76 seahorse 20 misfiring

    Hello, I have an old seahorse 20 which misfires (and sometimes dies) until it has warmed up, after about 10 mins, then it runs well. It used to run smoother when cold until I took the crankcase apart and re-sealed it. So the obvious answer is the crankcase bolts are a bit loose, but if it were...
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    1973 Evinrude nightmare!

    Hello, I have a 73 Evinrude Fastwin 20 which is rapidly turning into a total rebuild, just can't seem to get it to run right so I got a few queries which I could do with some help with. It starts relatively easy but it splutters and runs lumpy thereafter. Plugs are quite oily which would...
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    Need help with a part number

    Hello, I have a 1973 Evinrude Fastwin 20hp (European equivalent of the U.S 18hp) and I'm trying to find a part number for the 5 screws/bolts that go through the underside of the lower motor cover and into the engine block, thus holding the block down. They have a 5/16 head if remember...
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    6hp Johnson doesn't like starting when hot

    My mate has a 6hp Johnson (6rlere 1994) and it runs like a dream except it doesn't like starting when it's warmed up, I suggested it was incorrect spark plug gaps (or indeed plugs) but what does everyone else think please? Cheers
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    !973 Fastwin 20hp Thermostat Holes

    Hello, I was wondering if anyone can help me, on my Fastwin under the actual thermostat, inside the housing there are two holes, one at the top of the housing and one at the bottom, well the hole at the top seems to be blocked so does anyone know where it goes, I've managed to get a lot of crap...
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    1973 Fastwin 20 Petrol Type

    Hello, This might seem like a dumb question but does anyone know how to tell what petrol my engine runs on? Originally I'd imagine it would have run on leaded fuel but I got it running with unleaded, is it possible to convert them to unleaded and how can I tell if this has been done? Also...
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    1973 Fastwin 20hp

    Hello, Hello, I was wondering if anyone could help me please? I've got a 1973 Fastwin and between the cavitation plate and the gearbox there is a small hole which looks as though it might be from a jig or something, there are a couple of these holes in various places on the gearcase. The...
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    Fastwin Igntion

    There's two ignition systems that can be found on Fastwins (or the Johnson equivalent), one with internal and external coils and one with just internal. Does anyone which is the newer (or better) system? Also, at present I have the internal and external coil type system, could I change it to...
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    1973 20hp Evinrude Fastwin

    Hello, I was wondering if you could help me. I have a 1973 20 hp Evinrude fastwin and I am having trouble getting a spark from it. A friend of mine has the equivalent Johnson engine. I am having trouble working out the magneto on the Evinrude out because it looks as if one coil feeds both sets...
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