Water Impeller Replacement

[johnno]

Hi,<br /><br />I am unsure of the factors that determine when a water impeller needs replacing. Besides having a steady stream of water coming from the motor as an obvious sign, does the water impeller still need replacing after a number of years or after an amount of usage?<br /><br />The motor I have is a Merc 115 1979 Blueband (v6).<br /><br />Any help is appreciated.<br /><br />------------------

 

[ODDD1]

Re: Water Impeller Replacement

hey, johnno mercury says replace/inspect impeller every year.... which is way overkill....in our area we go 4 years and replace it as a maintenance item. even with a good telltale water stream coming out of block you can have the top cylinders running dry if you have a weak imprller. good luck with your motor!

 

[Todd]

Re: Water Impeller Replacement

I have a '69 six pack 95hp Merc and a '82 90hp Merc, both have the same type impeller. Its easy to change might take an hour at the most, but every year is to often. I think I had my first one on for 5 years and still was pissing strong. I think as long as you watch your stream of water everytime you use it you can tell when its going bad. Which everytime I have changed my its been when it only had one fin left on it.

 

[ODDD1]

Re: Water Impeller Replacement

Only one fin left? you are waitin tooo long........

 

[pfish1961]

Re: Water Impeller Replacement

Salt water, change every year. Fresh, every two. Long periods of disuse, every 2.<br /><br />Keep em wet by using them a lot, they last up to 3 years.<br /><br />Two is a good rule of thumb.