Is this the right outdrive?

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pastorbud

Chief Petty Officer
Joined
Jun 1, 2005
Messages
555
I am looking for a lower unit for my 1987 125 HP Force outboard.
Force 125
Mod 1251X7B
Ser 3795

I think this one is what I need:
http://cgi.ebay.com/ebaymotors/FORC...ssories_Gear&hash=item2a133333f7#ht_500wt_975

But seller states "HONESTLY THIS IS LEFT OVER FROM LAST YEAR AND I DON'T REMEMBER WHAT YEAR THE MODEL WAS. SHAFT MEASURES 25" FROM THE CAV PLATE TO THE VERY TIP SO I THINK IT'S A 20. CHECK YOURS."

What exactly do I "check" to see if it fits? I have my old lower unit off, so I can measure or photograph just about anything.
 
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pastorbud

Chief Petty Officer
Joined
Jun 1, 2005
Messages
555
Re: Is this the right outdrive?

Y'know what? He seems to have mis-labeled it. I notice the water inlets are wrong, and it does not have twin vent and fill screws at the top.
 
Frank Acampora

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: Is this the right outdrive?

Yep! I'm with jerry. OMC See my private message to you
 
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pastorbud

Chief Petty Officer
Joined
Jun 1, 2005
Messages
555
Re: Is this the right outdrive?

Well, I think I found another.

http://www.ebay.com/itm/11080891803...e=ADME:X:AAQ:MOTORS:1123&vxp=mtr#ht_957wt_932

But what is a "20 inch transom"? My transom measures 22" from the outboard mounting bracket where it meets the top of the transom to the bottom directly below that. It's about 25-1/2" from the center of the bottom to the top.

I have a 1987 Force 125 HP, Model 1251X7B, Ser 3795.
 
jerryjerry05

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,927
Re: Is this the right outdrive?

They made 2 models a 20 and a 25.
You need to measure the drive from the top of the water pump to the top of the shaft.
Should measure 25-26" Any shorter like 21-22 it's a 20 inch and won't fit your 25
He says the transom is 20 not the drive.It's a 25
Measure yours.
 
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