Mercury Optimax 75, 90, 115, DFI starting year 2004 service manual., Page 136Get this manual
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TIMING, SYNCHRONIZINGADJUSTING
aAttaching plateJam nuts1.11 mm 0.10 mm (0.44 in 0.040 in
REFNOQTYb JAM NUTS TORQUE DESCRIPTION lb-in 65 lb-ft Nm7.3
90-889785 APRIL 2003