Yamaha 115-225 HP Outboards Service Manual, Page 65Get this manual
4) Turn the flywheel rotor by hand so that the timing plate points specified position
Flywheel position: 115: 25degrees 130L130: 22degrees 150L 150: 24degrees ProV150: 28degrees ProV200: 20degrees 175, 200, 225: 22degrees
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5) Adjust the length of the fullyadvanced ad justing screw so that when the magneto control lever contacts the fullyadvanced adjusting screw, the marking on the pulser assembly aligns with the timing mark on the flywheel rotor
With timing light
&WARNING
1Install the specified test propeller2Install the outboard to the test tank
Before adjusting, be sure to warm up the engine1) Check that the timing plate position is correct(Refer to page 3-16 2) Adjust the lengths of both magneto control link and throttle cam control link to specifications