Re: seahorse 4hp not idleing
Ah, yes. With an unknown pedigree there is more to go over.
Fuel, spark, compression; check 'em all to be sure of what you have.
Another key piece of information required will be model number. This can be found on a plate attached to the transom bracket and on an aluminum welch plug pressed in to the top of the engine block.
Good luck.
J