Honda BF15D BF20D Outboard Motors Shop Manual., Page 102Get this manual
9) Tighten the 45 mm lower mount rubber pinch bolts to the specified torque TORQUE: 22 (2.2 kgf m, 16 lbf ft)
LOWER MOUNT RUBBER PINCH
1O)lnstall the lower mount rubber cover with the boss toward up, and tighten the four 20 mm flange boltsTORQUE: 12 (1.2 kgf m, lbf ft)
RUBBER COVER
11)Reinstall the following:gear case assembly (P4-10)- left and right engine under covers (P5-2,s)- engine cover (P5-1)