1983 Yamaha 30EN Outboards Service Manual, Page 21Get this manual
dMake sure the timing plate on the port side of the engine is aligned with the TOC mark on the timing indicatorIf not aligned, loosen the timing plate set bolt, align it with the TOC mark, and tighten the boltTurn the COl magneto base counterclockwise so that the timing mark on the COl magneto base aligns with the TOC mark on the COl magneto rotor 1COl magneto base COl magneto rotor 1COl magneto rotor Timing plate 3Timing mark
2 Timing mark
Turn the COl magneto rotor clockwise so that the timing plate aligns with the specified ignition timing25 BTOC