Parts Shop

Waterpumps

 

 

Waterpumps should be done every one to two years or 100  to 200 hours, depending on how you use your boat.  If you do mostly deep fresh water you can do this every other year.  For those who run in salt water or shallow water the pump needs to be done yearly.  When you change the impeller you need to use fresh gaskets and seal to gaurentee you get a good seal.  Any parts that you are reusing need to be inspected.  Make sure that your wear plate, cup and housing are smooth.  If they are not you need to replace these parts.  Impellers are usually sold seperately or in a kit with the seals.  Some waterpump kits include housings, while others do not.

 

Even if you do not run your motor the impeller must be changed.  When you take your waterpump apart you will see that the cup that your impeller sits in is not really a circle.  The reason for this is that when the impeller pushes the water from the bigger area of the cup on to the smaller part of the cup it increases the pressure of the water to push it up to your power head to cool the engine.  When your engine sits for extended periods of time the veins on the impeller develope a memory, they develope a curve.  This means the impeller can no longer push water up to your powerhead with the same strength. 

 

Waterpumps keep your engine from overheating which can cause catastrophic failure of your powerhead.