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Mercury thunderbolt 500 output shaft oil seal change-help!

Cptsnd

New member
:confused:Attempting to remove the cover to replace the output shaft oil seal (on bottom of engine)

im having trouble removing the actual cover, it's come out about 15 mm but doesn't seem to want to move any further....
 
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If you are talking about pulling the prop shaft out, use the propeller as a puller; stick and some plywood between the prop and the housing, and tighten the prop nut.

Jeff
 
That's the crankshaft.

The lower bearing cap can be pulled down to remove the seals. You need to loosen the bolts holding the crankcase together and pull the cap down.

Jeff
 
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