Saving Old Seagulls

Virtually anything that will clamp round a tube of that diameter will do.
I use a bicycle handlebar clamp.

I use a 40+ on a 6 foot ply tender I built myself. It is probably a bit overpowered, but it does the job nicely. I found that mine was reluctant to start because of exhaust back pressure, as it was too deep in the water, but I fixed that by putting a collar round the tube just above the bracket.

My ...

I don't know the design in detail - I just assumed there must be some kind of seal stopping inlet gases leaking past the crankshaft bearings.

As luck would have it, I have just been given another identical model from someone's garage, and after cleaning up the plugs, points and fuel filter, it runs ...

No, it's stiff all the time, doesn't change at TDC. It's not the prop end, and there is no clutch. It looks like I'll have to open up the engine and look at the rigs and bearings.
It seems an odd coincidence that it has happened so suddenly but not while running, and hasn't run since it cut out. Can ...

Following on my post in Dohnut's thread, I thought I had exactly the same symptoms as his 40+.
However, prolonged attempts at starting have lead to a sudden new development - the crankshaft has gone very stiff to turn. It is impossible to spin the flywheel with the cord, and hardly possible with two ...

I've just logged in to post exactly the same question as here, and find someone with identical problems.

Mine's a 40 plus too, and was running well until it suddenly cut out. I have checked all the items already listed, and replaced the plug.
There is a spark, and the plug gets wet with fuel, but ...

That's just what I mean. I have a collar to lift the engine too, but the higher the engine, the more difficult it is to get any kind of grip on the petrol tank. I'm impressed that you find it so easy.

I can see how that would work if the engine is mounted low down, and you can bend over it from above. But sitting on a thwart in a small dinghy puts the flywheel at about chest height, so it is very difficult to brace the engine without risk of touching the flywheel. The boat isn't really stable ...

I am getting down to using my newly serviced Seagull, and have several observations. I don't know whether these are well known, or I am doing something wrong:

1) There is nothing to brace the motor against while starting, other than rather precariously holding the petrol tank while trying to avoid ...

Thanks Alistair.
The tilting effect is considerable in a small dinghy, and the depth of course varies enormously depending on loading. If I cram 4 people in it sinks about 6". With no clutch they'd all have to jump in pretty smartish!
Perhaps the ideal answer is a higher exhaust hole with a ...

I went through exactly this sequence some months ago. I could not get any water out running it in a tank.
But last weekend on the water for the first time there was very powerful jet of water out of the hole. It doesn't pump at low speeds, and it needs the motion of the boat through the water.

I tried out the 40 Plus on the water for the first time at the weekend. It was extremely difficult to start, but once started, ran perfectly, and would restart easily when still hot. Idling and pick up were fine, but I noticed it dripped constantly from the carburettor, and needed a tiny amount of ...

One thing that might possibly be indicative of something; everyone has talked of a dimple or slight depression in the crankcase collar, and 3 turns of the screw to lock the screw in it.
Mine has a hole the size of the screw going all the way through. Once located, the screw turns a further 1/4 " or ...

"Who cares here's a running Seagull. Magic!"

Exactly. It was aquired for next to nothing, and at first seemed like a lifeless lump. Now it starts and runs well, and next sunny day (!) I hope to have a go playing on the river. When the bigger boat is finally finished and re-launched, next year or ...

Thanks John I'll definitely be buying a manual!
I did put a hose hard up against the exit hole, and it all poured easily out of the inlet. I checked the delivery pipe and it seems well located at the top (stuck, in fact) and I was careful to get it in the hole at the bottem end on reassembly.
The ...