older yamaha- prop has a knocking sound

[quizkidds]

i can ask the previous owner what kind of maintanence the intake and prop the ski has had. its a 95. when i get it in its slip and pull some of the seaweed that accumulates, the sound tends to go away. but my friend struck a shallow bulkhead while idleing and it is more constant now. <br /><br />does this little bit of seaweed theory I have hold any water? what should I start with once i have it out of the water and in a place where I can get to the intake?

 

[Jeff Walkowiak]

Re: older yamaha- prop has a knocking sound

the berrings in the pump may be worn or totally bad or the prop is worn out , have someone who is knowledgable with the pumps to have a look at it for you. Inspect the pump liner for bulges that will make contact with the prop