Merc Bravo III Problem
 

Any insight into the possible problem would be appreciated before I tear the drive apart. The problem, my Bravo III outdrive is now starting to have problems with what I am calling a " sliipage"
By that I mean, when I start to apply the throttle the motor rpm and speed to not react accordingly. The outdrive starts to make a "grumbling noise" The motor rpm will increase with no speed to the boat. I apply more throttle, going from aprox. 1k rpm up to 2krpm and the boat does not move like it has, should. The motor rpm will quickly jump up to 2500-2700 rpm without the boat speed increasing. At low rpm 1K rpm and lass it seems to operate okay. No problem in going from F/N/R . The shift is definite. Just at a RPM above 2K I see the problem. Plus I find this problem happens when the motor/outdrive gets up to operating temp,aprox 175F. When it is cold, I pull out of the harbor it works as it should, comes on plane. All fluids are full. Any answers , tests,or solutions. Appreciate your help!

Re: Merc Bravo III Problem
 

Check the hubs (or get a prop guy to check them) in your props before you start tearing your drive apart.....

Re: Merc Bravo III Problem
 

Thanks mikeyt, I will do that. Its coming out of the water next weekend. I will drain the outdrive fluid and make sure no water has made its way in. It has been slipped for the last two months, great having it available when ever you want to go but hope I didn't intoduce water into the drive.

Re: Merc Bravo III Problem
 

Keep us posted. That is a new one i havent heard about or experienced.

Re: Merc Bravo III Problem
 

Years ago I had a motor coupler that failed and slipped as you described.

Re: Merc Bravo III Problem
 

Hudson River Steve
Thanks, I am pretty sure that is what is the problem. Big problem.!