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Changing the lower unit oil on a Merc 250hp torque master #11513620 03/31/16 03:13 PM
Joined: Apr 2009
Posts: 613
Texascajun69 Offline OP
Pro Angler
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Pro Angler
Joined: Apr 2009
Posts: 613
I am trying to change the oil in my lower unit and there appears to be NO drain hole. All of my other Merc's had a plug on the bottom side of the shaft bulge and another up higher no the side. I cannot find a drain hole.

Any help.


John K Fontenot
Diapers and Politicians need to be changed often; and for the same reason.
Moritz Chevrolet - 9101 Camp Bowie W Blvd, Fort Worth, TX - Monte Coon (817) 696-2003
Re: Changing the lower unit oil on a Merc 250hp torque master [Re: Texascajun69] #11513625 03/31/16 03:16 PM
Joined: Feb 2008
Posts: 2,100
epicoutdoors Offline
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Joined: Feb 2008
Posts: 2,100
Remove the prop. There it is!

Re: Changing the lower unit oil on a Merc 250hp torque master [Re: Texascajun69] #11513646 03/31/16 03:23 PM
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Posts: 613
Texascajun69 Offline OP
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Thanks That was my next move.


John K Fontenot
Diapers and Politicians need to be changed often; and for the same reason.
Re: Changing the lower unit oil on a Merc 250hp torque master [Re: Texascajun69] #11513951 03/31/16 05:37 PM
Joined: Nov 2012
Posts: 806
J
JimmyP Offline
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J
Joined: Nov 2012
Posts: 806
Put a level on the lower unit and make sure it is level when you refill. Once oil starts running out the top hole stop filling and let the oil drip until it stops running out. Don't just keep pumping and cap it off while still running out. The Torquemasters don't have a lot of open space in them and overfilling causes a pressure buildup that can cause the seals to fail.

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