Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 422Get this manual
LEFT HAND NON-RATCHETING
"Vee" Blocks and Dial Indicator Position propeller shaft roller bearing surfaces on vee blocksMount dial indicator at front edge of propeller splinesRotate propeller shaftDial indicator movement of more than 0.006 in(0.152 mm) (or noticeable wobble) is reason for replacement
DISASSEMBLY
1Remove shift cam from cam follower2Insert thin blade screwdriver or awl under first coil of cross pin retainer spring and rotate propeller shaft to unwind spring from sliding clutchDO NOT overstretch spring