Quote Originally Posted by larry_arizona View Post
I would go by hours versus seasons. I average about 40 hours a season, so I changed mine after season 2.

If I was running 200 hours per season, I would do it annually.


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Only way I would do this is if you pull it out at the end of the season and re-install at the beginning of the next. I still prefer to put in a new one every season. I have had one rip a fin off because it was left in all winter and run again in the summer (run hours were less than 50 for 2 seasons). After I found that, I replace it every season, seams silly to pull it out only to put a used one back in. $40 impeller can save a $60K to well over $100K boats.