Yamaha 115-225 HP Outboards Service Manual, Page 56Get this manual
PERIODIC SERVICE
D31700-0
CARBURETOR PICKUP TIMING NOTE: _
Before adjusting the carburetor pickup timing, be sure to adjust the carburetor link and ignition timingRefer to pages 3-23 and 3-31
Throttle cam control link
1) Remove the throttle cam control link2) Turn the flywheel rotor so that the timing plate points to specified degree115, 130 4-degrees ATDC 150-200 6-degrees ATDC