96 Force 75 Hp Bayliner 16 ft

jstriker28

Recruit
Thread starter
Joined
Aug 20, 2007
Messages
5
Hope someone can help me out. I got a good deal on this boat, and even after doing the research on the infamous Force engine decided to take a shot. Boat ran perfect for three weeks, and then the problem started. My wife and I were out, and the boat will not go over 19 mph GPS. Ive had it as high as 32 mph. Max rpm on the engine is 5200 I believe, and I am still getting very close to that according to the tach, which seems to be working properly. The same day I also lost reverse, when shifting to reverse it just felt like throttle only. I figured one thing had to do with the other, and looked through the forums. Turns out I was able to adjust the nut on the steel rod coming from the lower unit, up and that fixed reverse. So I was excited to open her up to see if I fixed the other problem. No such luck sitll 19mph GPS. I have been researching, and without doing the marker test, ordered a prop anyway, that should be in by the end of the week. Worst case I have an extra prop. Also checked compression, and its good across all three. Also I was out with my dad, the backyard mechanic to get his opinion, when we were out I thought I had it trimmed up too high, and the prop was out of the water, because I got revving and no thrust, he was looking at the engine at the time and swore it wasn't out of the water, which is why I ordered the prop. I really hope thats it, but can anyone think of any other possibilities. Also I have no idea how to take the prop off, but seeing those two things under the nut leads me to believe its not just a turn of the wrench, so if someone could help me out with that as well that would be great. Thanks for any advice tips.
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,986
Re: 96 Force 75 Hp Bayliner 16 ft

Sounds like you have it figured out.
Sure sounds like a spun prop hub.

...." but seeing those two things under the nut ".....

There should be a flat piece of stainless under the nut, with the little tabs on each side bent upward against the nut. Flatten the tabs back down, then remove the nut.

The tabs are there to prevent the nut from loosening and falling off.
 
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