Re: 1977 85 hp evinrude v4 how replace water pump?
This is just some notes to go along with the factory description. <br /><br />Pull carbs (clean 'em while they're off), disconnect shift linkage under carbs, remove the 6 (?) nuts holding the LU to the mid-section, pull the LU off. Be careful to save the plastic tubes that act as guides for the water tubes when you re-install the LU. Also, be careful not to thread the shift rod up or down on it's threads - it wants to stay the same length. <br /><br />Once the LUs off, straight-forward to pull the pump top off & replace the impeller. A little grease or lube on the impeller vanes will help. By the way, a new impeller, if dry, can be wicked hard to turn within the pump housing - first time I encountered it I thought the LU was locked up.<br /><br />If you want to be real thorough, pressure check the LU while you have it off, or just go ahead & change the prop shaft, pump, and shift rod seals. <br /><br />I have used a shotgun brush to clean out the shift rod tube on engines that've seen a lot of salt water. Other than that, re-assembly is just like the manual, and you need a helper. Here's where you re-use those plastic tubes, by the way.
