As a general rule of thumb the water pump impeller should be replaced every other season.
Yamaha outboard water pump replacement.
Replacing a water pump or impeller on yamaha t8 8hp outboard motor peculiarity of this motor water pump.
In this video i replace a water pump on a yamaha 50hp 2 stroke.
The yamaha motor water pump needs to be replaced about once a year to be maintained.
The water pump on your yamaha outboard motor has a special seal over the trim tab that you need to remove in order to access the bolts that hold the water pump in place.
For steps requiring lubrication use brp triple guard marine grease or mercury 2 4 c marine lubricant.
For use on engine models.
Sierra 18 3068 yamaha water pump impeller sierra replacement water pump impeller for yamaha outboards.
A water pump repair kit is available for almost all outboard models.
In this video i replace a water pump on a yamaha 50hp 2 stroke.
Full power plus impeller replacement for yamaha water pump sierra 18 3069 40hp 50hp 55hp 60hp 70hp outboard motor parts 6h3 44352 00 4 5 out of 5 stars 13 14 09.
If your yamaha 90hp water pump has been neglected for some time it may also be necessary to replace one or both halves of the water pump housing.
In owning this motor for 8 years i have found that if you let it set for an extended period of time possibly 6 months that when you start it back up using muffs that your water pump may not pump water out the tell tale hole.
18 3413 water pump kit w housing 18 3440 water pump kit 18 3432 water pump kit 18 3430.