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  #1  
Unread 12-29-2016, 01:30 PM
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Default 1981 mercury trim pump/motor

Hello, my trim pump needs oil added to it and well the plug for the fill hole will not come out. The head for the screwwas made of plastic and broke as soon as i put any pressure on it. Hoping there was some metal under the plastic head i tried an easy out and lets just say the whole plug is eaten up and isnt going to come out. Is there any other way to get oil into this reservoir besides the hole designed to take it?


i was just going to buy a new motor/reservoir but i cant seem to find what im looking for. There seems to be 4 different pumps that match the model year and none of them look like what i have. I also cannot find a part number on the one i do have. ive attached some pics of what i have, would any of you happen to know what it is and where i could find a replacement?


thanks in advance










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Unread 12-30-2016, 08:04 AM
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Hi James. A detailed (close up) pic of the plug/hole will help. Trying to assess the damage and if it's possible to put a drill/tap/plug or a drill/heli-coil/plug into it and save the pump.
Thanks
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.


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Last edited by Destroyer; 12-31-2016 at 01:58 AM.
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Unread 12-30-2016, 06:52 PM
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I'll get a close up tomorrow.

What I'm really interested in is finding a replacement before I destroy this one anymore trying to fix it.
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Unread 01-02-2017, 03:08 AM
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snow has prevented me from getting a pic, it should all be melted tomorrow or tuesday and ill get that. I have made some progress in finding a replacement.

here is the link to the replacement dipstick (the thing i have mangled in my current motor)

http://mercuryperformance.com/89499-...ck-p-7879.html

Here is the closest thing i can find to the motor that is on the boat. Im sure it will function correctly but Im not so sure the mounting bracket i have will work on this motor. Even if it wont i can figure out a way to mount it to the boat so i will pull the motor and start messing with it more. Id much rather buy a 15 dollar plug than a 200 dollar motor.

https://www.dbelectrical.com/product...5-92459a4.html
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Unread 01-02-2017, 03:57 PM
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Is your engine an inline 6 outboard? Also know as a tower of power?
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.


If God didn't have a purpose for us we wouldn't be here, so
Live simply, Love generously, Care deeply, Speak kindly.
(Leave the rest to God)

Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
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Unread 01-02-2017, 05:56 PM
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Probably more to it, but in the exploded view, looks like the bowl is held on by one screw,#10. Can u drop the bowl and get to the back of the dipstick.
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