Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 517Get this manual
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RIGHT HAND NON-RATCHETING
aDriveshaft Holding Tool (91-34377A1)Torque Wrench; Torque Nut to 75 lbft(101.5 Nm)SocketBreaker Bar
IMPORTANT: Wipe any excess Loctite from pinion