How to replace a water pump impeller in a 50 hp nissan outbord thanks?

Question

How to replace a water pump impeller in a 50 hp nissan outbord thanks?

Answer 1

You have to drop the lower unit from the bottom of the motor. You will see a cover held on with 4 screws Remove it and you will see the impeller, should have 4 or 5 rubber blades on it. pull the set s***w out and pull the old impeller off, slide the new one on the shaft. Make sure the blades are all going in the same direcition. Put the set s***w back, put the cover back, put the lower unit back in place and you should be all set. Hint, if the motor is used in salt water, spray wd-40 on all the screws and bolts the day before. Good luck.

Answer 2

You need to unbolt the leg of the power head and then when you pull it off you will see where the impeller sits.  Fit new impeller and re-bolt together.