How often do you replace your impeller?

[P30]

Cool. A contrarian Afourian ...

... I'm lovin' it.

[sdemore]

This is more great and useful information guys! I just picked up my first boat (completely gutted with the disassembled A4 in boxes) last winter. I replaced the impeller as part of the engine rebuild and added an electric pump for the FWC. I had no idea of how long the impellers would last, or that you could rejuvenate the old ones.

Thank you for more great information to stick in the memory bank!

[Sam]

In Chicago I change mine [oberdofer] every 3 seasons, about 60 -75 hrs total on early model A4 I always [slowly and carefully] take the impellor and shaft out over winter layup and find this extends its' useful life. [rounded off - deburred the shaft edges so not o damage bushings] Always order a new spare and keep recent old one as emergency backup. Inspect, lightly lube and carefully reinstall in spring. Never had a impellor problem in 40+ yrs and am on only my second water pump. I have fairly decent access so job is not too difficult. A couple of times my backup has gone into someone else boat when there fins have cracked off.