Engine Block Drain Plug Kit – Fits MerCruiser Marine Engines (Replaces 22-806608A02, 18-4226) Optimax 2× Shaft O-Rings (replaces 420-430-110

2× Shaft O-Rings (replaces 420-430-110

A: Common symptoms include reduced water flow from the tell-tale (indicator stream)

Remove the screws holding the pump cover plate in place

which in turn controls the opening and closing of the carburetor's throttle butterfly

Engine Block Drain Plug Kit – Fits MerCruiser Marine Engines (Replaces 22-806608A02, 18-4226) Optimax 2× Shaft O-Rings (replaces 420-430-110Engine Block Drain Plug Kit Fits MerCruiser Marine Engines (Replaces 22 806608A02, 18 4226) This engine block drain plug kit features blue plastic, wing nut style drain plugs designed for winterizing or draining MerCruiser stern drive and inboard engines. They are used to drain water from the engine cylinder blocks and exhaust manifolds to prevent damage from freezing. These parts are direct replacements for Sierra 18 4226, MerCruiser 22 806608A02, 22