Hello All,<br /><br />This is my first boat and I'm not very technically-minded anyway, but here goes ...<br /><br />I am still trying to identify the year of this motor, but I think it's 1970 (model number 40052A).<br /><br />After a few minutes' running on three-quarters power, engine starts to die as if running out of fuel. Easing back on the throttle brings the engine back to life.<br /><br />So it's possible to run on about half-power, but no more. I checked that both cylinders are firing and the plugs both look the same colour so I assume they are.<br /><br />I imagine that this is a fuel problem and have checked all the lines and connectors up to the carb, plus I've cleaned and blown out both the filters.<br /><br />This only leaves the carb which looks a bit tricky to get off as the starter motor is in the way. Before I wade in there (and do some damage), I have a spare carb which I've been looking at. It has the number 379486 stamped on the side, and the number 307777 stamped on the bottom of the float bowl.<br /><br />Inside the float bowl, there is a small needle with a rubber tip which is pushed up as the float rises, stopping the fuel flow. As the level drops in the bowl, the needle is released and allows fuel to enter again.<br /><br />If this needle is sticking, might it be possible that this is causing the problem? As the power is increased, the float drops but the needle does not (or not as much) and so the engine is starved of fuel.<br /><br />So the question is, (a) does this sound likely, and (b) what is the best way to get at the carb (or get the float bowl off at least)?<br /><br />If anybody has any ideas, I'd be very grateful. If I can identify the motor, I see that I can get a manual through this site, which I really should do, but until I can afford it (sigh) any help would be greatly appreciated.<br /><br />Mal
