Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 486Get this manual
ATTACHMENTSCONTROL LINKAGE
3Place Ride-Guide yoke on pivot block and secure with 716 inx 1-34 in(11.1 mm 44.5 mm) bolt and locknut, as shown in Figures and 2Torque locknut to 10 Ibft(13.5 Nm), then back off 14-turn