Not a spun hub , help please!!

[natedog337]

Hey guys looking for some advice. I have a 26 ft pontoon with 4 stroke Yamaha 2011 with 38hrs on it.. Last year my first season I upgrading to a 4 blade prop with no issues... Prior to this season I removed prop to grease and reinstalled correctly.. It was installed and torqued properly.. Well took it out for its first tide this year and when I get to 3000-4000 Rpm it blows out and revs high and appears to slip.. Thinking I hard a spun hub Ireinstalled
My original prop and same issue except not as noticeable until about 4500-5000 rpm

Any advice on what my issue may be

Thxs everyone

 

[Triphammer]

Re: Not a spun hub , help please!!

No first hand info but from a quick glance at the exploded view, you may have an issue with
the "clutch dog".

 

[steelespike]

Re: Not a spun hub , help please!!

Have you added or removed or placed some weight differently? more people perhaps placed differently?
take a look under the boat anything dragging or hanging down.Have you tried trimming the motor?Usually can't move much and if it had moved a little it could create problems.If there are passengers try moving them a little at a time fore aft port /starboard etc.
You maybe have to lower the motor. On rare occasions you sometimes have to raise the motor.

 

[natedog337]

Re: Not a spun hub , help please!!

Well I feel pretty stupid. I've only had the boat 1 year and I found the sweet spot on my trim last year and used the gauge this year to set it exactly in the same place. Well i took a ride with my mechanic after trying to figure it out all day and the gauge or trim sensor is nit reading properly. Motor was trimmed to high. When I put it all the down and eye ball the trim, off she goes with no problems... Well it worked out with minimal aggravation thxs again

 

[natedog337]

Re: Not a spun hub , help please!!

Also probably didn't help that I was running on fumes which is less weight on the rear causin it to sit higher in water..

 

[steelespike]

Re: Not a spun hub , help please!!

Well thats a pleasant conclusion.I usually trim by sound and response.As i'm sure you know the there isn't much trim range on a pontoon.
Go have fun.