Can anyone provide the link to the detailed post regarding the installation of an access port/panel to allow easier access to the raw water pump to change the impeller?
Bent nose pliers are helpful along with some lube when reinstalling the new one. Yanmar has a new tool that is supposed to help R/R the impeller (Yanmar OEM only)
We did not need to add an access panel on our boat but the raw water pump is facing the wrong way on the 3GM30F.
I added the Speedseal kit, http://www.speedseal.com/speedseal.html and I'm very happy with this modification. You might want to consider this modification. It takes about 10 days shipping to get it after ordering by phone. So far we have not had an impeller failure.
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