Force operating rpm range

revertmastec

Petty Officer 1st Class
Joined
Nov 16, 2001
Messages
279
Can someone tell me the correct operating RPM range for a 86 Force 125?<br /><br />Thanks
 

Bry21317

Chief Petty Officer
Joined
Apr 9, 2002
Messages
552
Re: Force operating rpm range

I have a force 125hp, 88, the operating range is 4500-5500 and stamped on the label on the back on the left side of the engine when looking at the back of the boat. Just above the lower leg. My engine has been tweaked very much lately is running about 4800 rpms with a Hustler 17 Pitch prop on a 19 Foot bayliner. I am able to get it to about 40 mph now.<br /><br />Hope this should help at least give you an idea. <br /><br />In my clymer manual it says your's should be: 4250-5250.<br /><br />Thanks,<br />Bryan Cox
 

Bry21317

Chief Petty Officer
Joined
Apr 9, 2002
Messages
552
Re: Force operating rpm range

What are your RPM's running now? What size prop do you have? What size is your Bayliner?<br /><br />Bryan Cox
 

revertmastec

Petty Officer 1st Class
Joined
Nov 16, 2001
Messages
279
Re: Force operating rpm range

Bry,<br /><br /> I ahve a 18' Bayliner not sure of my prop pitch but I am running at 4300 with two people on the boat. Prop is pretty banged up so I think that is where I am losing my RPM. Guess I will hav to get a new prop. So you like the Hustler prop! Mayby that is what I will try. Who Did you get it from?
 

Bry21317

Chief Petty Officer
Joined
Apr 9, 2002
Messages
552
Re: Force operating rpm range

I purchased the Hustler prop from Boaters world. It is an Aluminum Prop, that is interchangeable. It is a two piece kit, Hub assembly and Prop that then slides onto the hub, this way you can change props easily. It was about $110 total. The hub is about $50 and the prop is about $59. But it was worth it. The Prop number you should need is HU1317AO, Make sure it has the O, there is an M for mercury, but that won't fit because Turning Point (Manufacturer) said that my 88 Force 125 had an OMC lower unit, so this is why you must use this prop. The Hub Kit number is Kit 1A.<br /><br />You can check out their website to read about the props at http://www.turningpointpropellers.com/ <br /><br />For the money, they work very good. I had a Michigan Wheel prop on my boat before, and it would allow the boat to over spin the prop in turns, it now sticks tight in the water and I don't have to trim down around some sharp turns I had problems in before.<br /><br />This engine seems to be running awesome now. I have a 19.5 bayliner with this engine on it. I am able to get up to about 40 or just a hair over with 3/4 tank of gas and me and another guy on the boat and all my tools so probably about 450 lbs in us two, hes 240, then my tools are about 75. I am running about 4800 RPMS now.<br /><br />Hope this helps.<br /><br />Bryan Cox
 
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