Re: 10hp Johnson.

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garry-in-michigan

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#76164

I converted a five horse I had in for an overhaul (which included oversize pistons and rings) by drilling through the upper top and bottom exhaust ports. I used modified counter sunk headed screws inside the bypass to screw a quarter inch aluminum plate like Frank made to the side of the engine. I retained the 4 gallon tank, caping off the manifold pressure nipple and zip tied the hose to the starter support bracket on the intake manifold to act as an air vent. That way he always had the proper fuel / oil ratio for the five horse Fisherman. . . 😎