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#10758531 - 04/10/15 11:38 AM Yamaha 4stroke 25hp
Fishinole Offline

Registered: 03/08/11
Posts: 44
Loc: Highland Village
My son is having issues with this Yamaha 4 stroke motor. Replaced impeller 3 times in the last 3 months. Install new one, go fish, impeller shreds. repeat the process and it shreds again. He is in FL so I suggested finding a dealer to check the housing and low water pick up screens as he may be sucking sand and gravel that is shredding it. Any other ideas?

#10758974 - 04/10/15 03:49 PM Re: Yamaha 4stroke 25hp [Re: Fishinole]
redchevy Offline
TFF Celebrity

Registered: 01/25/05
Posts: 6102
Loc: texas
-Make sure it is the correct part
-make sure he has the veins the correct direction
-no obstructions in the housing?
-key installed, although that shouldn't shred it.

#10759023 - 04/10/15 04:11 PM Re: Yamaha 4stroke 25hp [Re: Fishinole]
PowerLizard Offline
Extreme Angler

Registered: 03/08/03
Posts: 1734
Loc: Flower Mound, TX
Check for the correct part number from a different source. The same guy is going to give you the same answer. Verify installation is done correctly via parts manual or Youtube. Try testing in a controlled environment like a trash can filled with water. Run it low speed for 10 minutes and then take it apart again to see if it is still shredding.


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