Not sure what prop I need for my 1985 125hp Force outboard motor

Will.Ritt

Recruit
Joined
May 23, 2012
Messages
4
Hi,I recently bought a 19ft boat that came with a 1985 Force 125hp motor 1258x5a. It did not come with a prop and I am completely new to all of this and have no idea what fits and what doesnt. What I do know is that it needs a 15 spline prop and im pretty sure it needs a non thru hub exhaust prop. Im just looking for my cheapest option and plan to use the boat for fishing and the occasionally will be pulling a tube. If anyone can give me model numbers or what size and pitch I need that would be amazing. Thanks
 

steelespike

Supreme Mariner
Joined
Apr 26, 2002
Messages
19,069
Re: Not sure what prop I need for my 1985 125hp Force outboard motor

if we have to guess I would go with a 17" pitch. Its not likely to be too much prop
And if its under propped you can still use it and just watch the rpm.
You should have a accurate tach and a gps for speed to evaluate your results.
Some cells have a gps app.
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: Not sure what prop I need for my 1985 125hp Force outboard motor

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You need not be limited to the solid hub props. Thru hub exhaust props will work just as well with no loss of performance. Just be certain the outside hub of the prop will fit you small 4 inch diameter gearcase. White prop is a stock solid hub prop. All others are thru-hub exhaust.
 
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