Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 518Get this manual
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RIGHT HAND NON-RATCHETING
aAdaptorBearingWasherSpringNut; thread nut all the way onto boltBoltSet ScrewSleeve; Holes in sleeve must align with set screw
3 Align adaptor on driveshaf