Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 99Get this manual
Throttle Cam Adjustment (1997 Models) 1Loosen throttle cam moves freelyAllow throttle camAdjust throttle arm and align rollerroller screw so the roller the roller to rest on the the idle stop screw on the mark on cam with center of
MAXIMUM THROTTLE
Hold throttle arm against full throttle stopAdjust full throttle stop screw until alignment mark on cam is centered with roller
aThrottle Cam Roller ScrewThrottle CamIdle Stop ScrewAlignment MarkRoller
Throttle Arm Full Throttle Stop Full Throttle Stop Screw Alignment Mark on Cam Roller
THROTTLE PLATE STOP SCREWS IMPORTANT: DO NOT adjust throttle plate stop screws from factory settingThe top throttle plate clearance is set 0.038 in(0.965mm) (#62 drill) and the bottom throttle plate is set 0.011 in(0.279mm) (#80 drill)Contact the Mercury Marine Technical Service Department for proper adjustment procedure