Aluminum prop needing to replace has the following stamped on it.

48-77350-C1-23

I want to get a stainless steel prop. I Had a quicksilver prop on it (48 72760A4 23P) that ran a couple hundred rpms over max and now appears to be spun. Hub is stuck in prop so I can't remove it. Not sure that was the right prop or not but I ran it 3 years before this happened with no issues. Now rpms go way up and the motor stops pushing the boat if I get above a certain rpm while in the hole. I have another hub, but need the correct SS Prop to put on it. Is this the right prop to put back on it? If not, How do I find the right prop?

Motor is a 1998 Force (by Mercury) 120 HP outboard

Check out this site. Can help get you started in the right direction

 

http://www.mercurymarine.com/propellers/prop-selector/

Same problem I've run into using similar prop selectors. The 1998 Force 120 HP engine isn't listed.

Whatever you do don't take it to that A-hole on Interstate Drive.  I won't give him any business.

 

Go talk to the guys at the Merc. repair shop past the theater on Jefferson towards 111.

 

I checked around on iboats looking at that motor you've got the hard part, the right hub.  The force gearcase is just bigger.

 

http://boatpropellers.iboats.com/Force/120_HP_%281995-1996%29_19.00-Pitch_Propellers/194/

 

There you go!

 

Make sure your motor is the 15 spline thru hub exhaust!

Ha! I know what you mean. They not only rip you off but the are A-holes too. At least that one guy is.

Ha! I know what you mean. They not only rip you off but the are A-holes too. At least that one guy is.

 

I wait for his wife to be around.  She's much easier to deal with.  I converted my small boat's motor from a 20 HP to a 30 HP (changing the carb/intake/lines) this year, he was nothing but a complete jerk when I was asking for advice.  They just have loads of parts in stock and get stuff next day, otherwise I wouldn't use them.

It's been a while since I've had a hub replaced but my it's not that expensive, less than $100. It' not something you can usually do yourself because they are pressed in.

The last two digits in that number are the pitch, so a 23" pitch prop is what you are looking for.

Changing from an aluminum to a stainless prop should keep about the same pitch, but there should be a noticeable gain in performance. If the motor was only a couple hundred over max, I would stay with that pitch, you will get much better hole shot and performance when the boat is loaded.