Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 113Get this manual
TIMING, SYNCHRONIZINGADJUSTING
Throttle Cam Adjustment
NOTE: Low pressure electric fuel pump is removed for viewing purpose1Loosen roller arm screw allowing roller to move freely2Allow roller to rest on throttle camAdjust idle stop screw on throttle arm to align cam roller in the pocket of the throttle cam3Tighten roller arm screw to provide clearance of 0.005 in 0.005 in(0.127 mm 0.127 mm) between roller and cam
- Roller Arm ScrewRollerThrottle CamWide Open Throttle Stop ScrewIdle Stop Screw