2009 Yamaha F40 Outboard Service Manual, Page 194Get this manual
Flywheel magnet and timing belt
Removing the flywheel magnet
1Remove the fuel systemSee Chapter 6, "Fuel system 2Turn the flywheel magnet clockwise and align the "1" mark on the driven sprocket with the" mark on the cylinder head
3Loosen the flywheel magnet nutNOTICE: Apply force in the direction of the arrow to prevent the flywheel magnet holder from slipping off easily
Universal puller c: YB-06117
Removing the stator assembly