Fuel Pump
Tuesday, August 24th, 2010
How do I replace a fuel pump in a Mercruiser 898 sterndrive?
I have a 1978 Mark Twain 180v, with a Chevy 305 cid on a Mercruiser 898 Sterndrive. The fuel pump is out and I need to replace. My only problem is that I have no idea how and do not have a manual. If anybody can help, please do.
The same way as on a 305 or 350 chevy car engine.
Gasket on surface, pump lever in the block and tilt the pump so the lever goes under the cam lobe, tighten the bolts and reconnect the lines.
One note: be sure NOT to use a car fuel pump, the marine version has an extra port (diaphragm vent) that routes by a fuel hose to the carburetor top, when the diaphragm in the pump fails and it starts to leak this extra port dumps the fuel into the carb instead into the boat!
How to Repair or Replace a Fuel Pump : Removing Drive Shaft for Fuel Pump Repair
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