Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 367Get this manual
RIGHT HAND NON-RATCHETING
IMPORTANT: It is recommended that all seals and gaskets be replaced (as normal repair procedure) to assure effective repair
REMOVAL AND DISASSEMBLY
1Slide rubber centrifugal slinger up and off driveshaft2Remove water tube guide and seal from water pump cover(Retain guide for reassembly and discard seal 3Remove (and retain) nuts, one bolt and all washers which secure water pump cover to gear housing4Using pry bars, lift water pump cover up and off driveshaft51874