2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 129Get this manual
POWERHEAD SPECIFICATIONS Data 9.915 HP
CYLINDERPISTONPISTON RING
Cylinder distortion Piston to cylinder clearance Cylinder bore Cylinder measuring position Piston skirt diameter Piston measuring position Cylinder bore wear Piston ring end gap 1st Limit Limit mm(in) mm(in) mm(in) mm(in) mm(in) 0.05 (0.002) 0.02760.0425 (0.00110.0017) 0.100 (0.0039) 58 .00058.015 (2.28352.2841) 50 (2.0) from cylinder top surface 57 .96557.980 (2.28212.2827) 15 (0 .6) from piston skirt end 0.055 (0.0022) 0.100.25 (0.0040.010) 0.50 (0.020) 0.100.25 (0.0040.010) 0.50 (0 .020) Approx5.8 (0 .23) 4.6 (0 .18) Approx7.4 (0.29) 5.9 (0 .23) 0.020.06 (0 .00080.0024) 0.10 (0 .004) 0.020.06 (0.00010.002) 0.10 (0.004) 1.211.23 (0 .04760.0484) 1.211.23 (0.04760.0484) 2.512.53 (0.09880.0996) 1.171.19(0.04610.0469) 1.171.19 (0 .04610.0469) 0.0020.013 (0.00010.0005) 0.040 (0.0016) 13.99514.000 (0.55100.5512) 13.980 (0.5504) 14.00214.008 (0.55130.5515) 14.030 (0.5524)