Corrosion on my prop

M

Mike B

New member
I'm winterizing my 2017 Yamaha 115 today and found that my propeller has a considerable amount of corrosion on the back that faces the engine. its an aluminum prop. Is there an anode I should be looking for. Everything else looks great, just the back of the prop that sits on that bearing. Thanks
 
A photo would be very helpful.. Are you leaving the prop in the water when the boat Is left in the water? What type of water are you boating in. Is a 110 volt AC system plugged in when the boat is in the water?

It could be Cavitation (Basically boiling water in a low pressure area-as opposed to "Ventilation" where air is reaching the blades of the prop because of improper flow or trim.

It could break electrolysis/or Corrosion.
 
I might have been something I did at the beginning of last season, I may not have tightened it down enough. I realize now it came off too easy. Time to get a torque wrench. I didn't take a picture, Its always raised out of the water when at the dock and a lot of time when its not running and there is no ac within 75 feet. Thanks for the reply.
 
Mike B":259abwet said:
I might have been something I did at the beginning of last season, I may not have tightened it down enough. I realize now it came off too easy. Time to get a torque wrench. I didn't take a picture, Its always raised out of the water when at the dock and a lot of time when its not running and there is no ac within 75 feet. Thanks for the reply.
Click to expand...

It is possible that if the distance from the hub perhaps with an improper thrust washer, could cause more turbulence and the lower pressure?

When you get a chance take a photo.
 
Back
Top