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Yamaha 115 water pump Replacement


If you possess an outboard motor, it’s likely that sooner or later you’ll need an innovative new liquid pump impeller. Together with chances are in addition good that it’ll come sooner—not later. Some manufacturers, like Yamaha, advise that you examine the impeller yearly and change it every two to three months. To see how this job gets carried out by a pro, we went to Norfolk Marine along with Yamaha Master Tech Chris Breeden take united states through procedure.

The first step in this process is eliminating the reduced unit. Pull the bolts that secure it, and also a friend allow you to slide the unit down and off of the outboard. Always have a spot to stay the low product in an upright position, if your wanting to pull it off of this engine.

Next, get rid of the liquid pump housing bolts, after which lift-off the housing. Make use of a flat-head screwdriver to help pop the housing no-cost, if necessary. You can now achieve the components you'll want to replace: underneath gasket, base-plate, impeller, key, and glass. If you’re only performing an inspection, search for a “set” (bending) when you look at the impeller vanes, damage to them, or any melting or scoring on the cup. If any of these indications of wear can be found, change the components.

With the bad components changed, bolt water pump housing straight back on. Then carry the reduced unit and slip the shaft back-up the outboard, giving the reduced unit some wiggle-jiggle until it slides into place. After that, oil the reduced product bolts (so they don’t seize set up) and bolt the lower unit right back on.

Eventually, offer your handy-work a test: hook a freshwater offer on motor, start it up, and also make yes water is moving through the outboard as meant. Note—it needs a few momemts for liquid to your workplace its method through the powerhead and the tell-tale, on big four-stroke engines. Examining how the engine changes is a great idea, also, simply to make certain you lined every thing up properly when re-assembling the engine.

Much more good outboard advice, from Master Tech Chris Breeden and Boats.com:
- tips replace the motor Oil on a 4-Stroke Outboard
- how exactly to replace the Thermostat on an Outboard Engine
- 100 Hour Two-Stroke Outboard Engine Provider
- How to Winterize a Four-Stroke Outboard
- Resolve Your Outboard Engine Problems: Starting, Gas, Shear-Pins



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