Quote:
Originally Posted by OL_JR
I have a couple of older 2 stroke outboards that don't see a lot of use. Last 3-4 years they will maybe go on one trip or just get fired up and ran for a bit with fresh gas.
On an outboard that gets even somewhat steady use I'll replace the water pump every couple of years but curious how long I can go without worrying about these other ones.
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I assume you are talking about replacing the impeller? short answer is who knows. I've had some very old yamaha and honda outboards that probably went 20 years on the original impeller.
Had a Merc (a few mercs) that needed them replaced every few years.
I usually just had a kit ready to go just in case. Cheap and easy swap out. Also water pump housing.
Most manufactures say replace every 3 years at service time - but that's quite often for the average Joe who doesn't put 100+ hours a year on the boat per year.
I probably would just buy the kit, put it on the shelf and wait until the old ones dried up and started cracking (or the outboard stops peeing correctly). If you don't use them often, they won't wear down, but just like an old tire, they will start cracking over time.
I was going to say, you can always pull the lower unit and look, but at that point you might as well swap the new one in. You could use the old one as a spare.