I've got a 40hp twin carb 2 stroke 40hp mariner recoil start.
the engine starts fine and shoves my avon along very well, it's just at tick over and very low revs it seems lumpy. i'm aware they are not as smooth as a 4 stroke and it never stalls but just feels, well, lumpy.
before i go talking to a marine engineer is was wondering if there was anything i can check at home.
i'm not much of a mechanic (basic oil changes on motorbikes and such is about it really) so the simpler the better. perhaps the idle is too low? or perhaps the carbs are a little gummed up with old 2 stroke oil. if so does anyone know of a carb cleaning additive i can try to clear it?
like i say, this is before i start paying mucho moolah on someone to strip, clean and set up the carbs.
for what its worth, when not using the boat i always run the engine after disconnecting the fuel line to run down any fuel in the engine and carbs to stop the gummed up thing.
any pointers will be much appreciated. it could just be me looking for issues that don't exist but i like peace of mind.