1983 Yamaha 30EN Outboards Service Manual, Page 58Get this manual
COl magneto 1Remove the flywheel cover from the flywheel
The major load must be carried in the direction of the arrow If not, the holder can easily slip off
Keep the nut side flush with the crankshaft end until the flywheel comes off the tapered portion of the crankshaft
Align surface
1Flywheel cover
Loosen the flywheel nut using the flywheel magneto holder and 30 mm (1 .18 in) socket wrench