Honda BF15D BF20D Outboard Motors Shop Manual., Page 152Get this manual
1FLYWHEEUCOILS aREMOVAL
1) Remove the following:engine cover (P5-1)- left engine under cover (P5-2)- right engine under cover (P5-3)- recoil starter (P7-2)- starter case (P7-10)
[I] STARTER
2) Remove the three 10 mm flange bolts and starter pulley3) Hold the flywheel using the commercially available flywheel holder and remove the flywheel nut
[I] FLYWHEEL NUT
F21 FLYWHEEL HOLDER (Commercially available)