Honda BF15D BF20D Outboard Motors Shop Manual., Page 359Get this manual
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CYLINDER, PISTON
1 31 OUTER TUBE
112 lbfft)
Do not reuse
O-RING 2.0 34.5 mm reuse
12 11 CYLINDER
1 Do not reuse1
O-RING 2.4 27.7 rnm