Recent content by stjon

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    Old Yamaha P200 12hp

    Hi all - after searching posts on this motor I've a horrible feeling it's not going to get many replies! I got this motor attached to my little fibreglass fishing boat. It's never run, but an engineer tells me it's a good motor if only I can source new coils. I can't find anything myself - would...
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    Long or short shaft?

    I am looking at a Johnson 4hp Model No J4BRC1C, serial number B006440. From info on here it appears to be a 1981 motor, but can you tell if it is long or shaft from that info? Steve
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    Any UK based boat fishermen/women reading this?

    Hi - I'm in the process of tidying my first ever little boat and engine - got it running and so excited. Could not have done any of it without this brilliant forum. I have no knowledge of boat fishing in the UK - legalities, best places, things to do/avoid, so if anyone has any advice or...
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    Connecting spark plug/boot/HT lead

    I have bought new plug leads and plugs for my Seahorse, so wanted to be sure the connections were all sound. I bought two boots with screw connectors to the HT lead, but found that I couldn't get a reliable connection onto the plug - there was just a flimsy (copper?) loop that got mangled when I...
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    1965 Seahorse 18hp thermostat question

    Hi again! I've just discovered that I don't have a t/stat in my motor! I read on here somewhere that the thermostat didn't change for many many years and the only one I get in the UK at a reasonable price is described as "JOHNSON OUTBOARD GENUINE THERMOSTAT - 2 STROKE ENGINES P/No.5005440. THIS...
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    1965 Seahorse 18hp fuel feed question

    When I pump the bulb on my Seahorse I sometimes get fuel leaking from where the pipe joins the motor. I have read about changing the hard to remove O ring so I think I'd rather change the female connector (on the fuel tank end) for simplicity - they seem cheap enough and I'd have to send to the...
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    Not pumping water - solved!

    Just wanted to post my good news and say to all other newbie boaters - listen to the experts! I have been posting and reading advice since my 1965 Seahorse 18hp stopped spitting water. I did everything that was suggested (changed impeller, cleared pathways etc etc) and must have taken the thing...
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    Seahorse 18hp 1965 - impeller change

    Re: Seahorse 18hp 1965 - impeller change Hope these pics show up OK. My reason for looking at the impeller was because I got the engine running, had a good water stream coming out of the exhauset, but after 5 minutes it stopped. But now I've seen the impeller it doesn't look bad, so what...
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    Seahorse 18hp 1965 - impeller change

    I just took the bottom half off an outboard for the very first time to prepare for a new impeller! I've read a lot about the process so things were where I expected, but I was surprised to find the cavity that the gearchange column had some black grease and a little water in there. Then I...
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    Removing float needle seat (Seahorse 18hp 1965)

    Hi again - I think I have read somewhere about issues removing the float needle seat but can't locate the thread. I've tried to get mine out but my largest screwdriver only just bridged the gap across the top of the seat and I could not budge it - it slipped and scraped the metal of the seat a...
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    1965 Seahorse 18hp - water stopped ejecting?

    I have finally got my engine running with a reliable tickover! Had a misfire but put a new HT lead on and that seemed to sort it! However, I left it running for a good 5 minutes in a barrel with no problem and loads of water ejecting from the exhaust, when the water suddenly stopped flowing...
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    Seahorse 18hp - It's running! Onto the next problems....

    Re: Seahorse 18hp - It's running! Onto the next problems.... OK I've tried to upload 2 pics - hope that has worked. The first shows the nut that screws into the float bowl at the base - from looking at the parts listing on MarineEngine.com for a 1959 motor, I expected this to be the high...
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    Seahorse 18hp - It's running! Onto the next problems....

    Thankyou all who have replied to my various questions to date - my Johnson now runs and I am SO happy!! I have replaced the coils, checked the condensors, and finally removed and cleaned the points so I got two good sparks - there really is no short cut is there?! But still a non runner so I...
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    1965 Seahorse 18hp ignition timing basic question

    Hi all - I have just replaced my coils (thanks to all the great info on here!) so I have 2 strong sparks. The timing looked roughly right so i hoped I'd get it running rough at least - the marks on the flywheel looked to be aligned with the mark on the stator when the points were about to open...
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    Coil covers - repair possible?

    Hi all - I'm finding it impossible to obtain affordable replacement coils in the UK for my 1965 Johnson Seahorse 18hp. The outer covers are badly deteriorated but I was wondering if it's possible to 'recoat' the outer with something that would protect the coil from damp eg some form of silicone...
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