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    6hp water circulation.

    Have rebuilt my 1974 6hp which runs well, except that I see no water discharge. I have removed the lower unit and spun the drive shaft with an electric drill, which results in a decent flow up to 12" head of water. Have replaced lower unit, ensuring copper tube to the engine is seated in pump...
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    6hp flywheel clearance

    Am about to refit the flywheel on my 1976 seahorse and wondered if there is a specific clearance between the coil induction core and the magneto? Incidently; does anyone know whether the designer responsible for the gearcase oil filler died a painful, lingering death?
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    6hp water pump bleed holes. Why are they there?

    This unit, which is from 1974, has a pin hole through the casing near the driveshaft and another in the lower plate. Both seem to be at the point of highest compression so would seem to defeat the object of the exercise. I also note that no driveshaft seal is specified for the top casing: how on...
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    johnson seahorse 6hp 1976. reassembly query.

    There being no crankcase gasket, should I use a sealant?
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    Johnson seahorse painted combustion chamber

    Here's something different; I think. I've used a 6hp 1976 seahorse for perhaps a hundred hours before it seized, due to a gummed piston. Having dismantled it, I discovered the combustion chambers appeared to have been red-leaded. I cannot suppose that this could have been expected to survive in...
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