Thread: 40hp yamaha impeller?

Just changed the impeller on my 40hp - 2005 Yamaha. I did some research and posted on the outboard forum that I found. Then I bought a manual from Walmart. Manual did help but talking to the guys at the marina probably helped the most.

Hardest part was putting the lower unit back in place and getting it all lined up. I did put the motor in forward gear before I dropped the lower unit. The Marina and several said to do this.

Manual was a Sealoc
Purchased Yamaha OEM Impeller, I only changed the impeller. Everything looked good so just changed impeller.

Originally Posted by dfar

Were the impeller blades straight or curved a lot? I am wondering if the impeller blades are weak or bent to much to pump. Did you check the impeller key or plastic wedge that some use?

They had just a lil bend to em but not real bad. Yeah, checked it all. I think I am just gonna go ahead and put a new impeller in. I've got it tore apart, might as well do it.