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Has anyone changed a water pump/impeller themselves on a Yamaha 90 4-stroke? If so, how hard is it? Do I need the manual? Should I just let the dealer do it?
Not in my opinion... I always stick with Yamalube products to ensure its getting what it needs per spec. Other brands will work fine i'm sure, but I always try to go verbatim with what's recommended by the manufacturer.Any thoughts on engine and lower unit oil? Are there better oils out there than what Yamaha uses?