1988-1995 Mercury Force 5HP Outboards Service Manual, 90-823263 793, Page 214Get this manual

1988-1995 Mercury Force 5HP Outboards Service Manual, 90-823263 793, Page 214

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FTESTING GEAR HOUSING PRESSURE 1 Remove plug from lower starboard side of gear housing
Pressurize housing to 10 PSI and observe gauge for five minutesIf pressure drops, immerse housing in water