"CFLav8r" wrote in message
m...
My fairly new 03' Yamaha 115hp has been making a squealing noise that
sounds
like a loose belt.
Anyone have any idea what this might be?
I had the local maintenance guys at the marina look at it and they just
lubed some lower end bearing but they did not perform a sea trial.
Noise still there!

The power tilt has also been making noises but that I figure is just the
fluid level.

David
Port Canaveral, FL



Some Yamaha 4 strokes, usually the V6's, will squeal if salt spray gets
sucked in under the motor cover and sprays onto the engine and belt from the
flywheel rotation. Most of the time it is because a transducer is mounted
closer than 17" from the motor's centerline. Transducers with "speed wheels"
are the worst offenders. Silicone spray, used sparingly on the belt will
quiet things down for a while.

Other Yamaha's will squeal if the rubber bushings than surround the
driveshaft just above the water pump and just below the powerhead are too
tight and dry. Sometimes a touch of silicone spray or grease will shut them
up. The upper bushing can be accessed thru the front of the motor and the
lower by removing the gearcase.

Bill Grannis
service manager