Re: Mercury Mark 20/25 Impeller Installation

[legendre]

quote Jeff Register:

Try installing rings in a 5 hp Merc pistons in backwards with no way to compress the rings. Plastic Coke bottles & zip ties for compressers, They fell right in place.

So in fact, there +is+ a way to compress the rings.. just pointing that out. 😉

BTW, are you referring to the 70s-80s era Mercury 5HP (marked 4.5 or 45), single cylinder, with the one-piece jug & head? I have one of those, and they’re a very nice motor. Only real gripe, is the somewhat poorly engineered reverse lock mechanism. Bad place to cheap-out and use plastic instead of metal.