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Buy the Mercury 40HP seal kit here: www.boats.net/...
John will show you how to replace the prop seals on your Mercury outboard in this video from Boats.net. Removing the lower unit isn't necessary for this job, but we’re also changing the upper seals and replacing the water pump on this Merc 40, so we’ve already removed the lower unit. If you need to see how to do that you can check out this video: • Mercury Tracker 40 Low...
We’ll start by removing the gearcase fluid. Then, we’ll get the prop off so that we can access the bearing carrier assembly. With it removed, we’ll pull the old seals and replace them. Finally, we’ll get the bearing carrier and prop re-installed on the outboard.
See this diagram for a better look at the lower unit and prop shaft assembly: www.boats.net/...
Read how to do this job step by step: www.boats.net/...
See how to replace the input seals here: • Mercury 40HP Input Sha...
VIDEO HIGHLIGHTS:
Draining the lower unit - 0:45
Removing the prop - 0:55
Removing the bearing carrier - 1:20
Removing the old seals - 2:50
Replacing the seals - 3:20
Reinstalling the bearing carrier - 4:35
Find Mercury outboard parts here:
www.boats.net/...
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In the video we’re working with a 2003 Mercury 40HP 4-stroke EFI outboard motor, but you may have similar steps for your Mercury outboard. If you’re not sure whether these steps apply to your motor, leave a comment and we’ll get back to you.
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