Honda BF115A, BF130A Outboard Motors Shop Manual., Page 242Get this manual
PISTON RING GROOVE WIDTH STANDARD
SERVICE LIMIT
1.220.230mm (0.0480- 0.0464 in) 2.8052.825 mm (0.1104- 0.1112 in)
121 SECOND
1 mm .5 (0.049in) 2.85 mm (0.112in)
-15- 20 mm (0.60.8 in)
PISTON RING SIDE CLEARANCE
STANDARD
- 0'060 mm (0.0014- 0.0024 in)
(0.0012- 0.0022 in)
SERVICE LIMIT
0.13 mm (0.005in) 0.13 mm (0.005in)
PISTON RING END GAP
Measure the piston ring end gap 1520 mm (0.6- in) from the cylinder bottomBefore measurement, be sure to set the ring on the cylinder securely using the piston