The answer is yes if youre talking about an out drive. But you need to have the correct manual before you start. BTW this should be posted in: Mercruiser, Volvo and OMC I/O or Inboard Engine Problems
http://www.mercstuff.com/howdoi.htm <br /><br />Go to this site - it will tell you and<br />show you everything you need - it is<br />an easy job - smear new impeller with<br />grease.