Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 9Get this manual
5MAINTENANCE STANDARDS ENGINE
Part Item Idle speed (in neutral) Engine Recommended full throttle rpm 900 Standard Service limit
+ 50 min-I (rpm)
!I]: 4,5005,500 min-I (rpm) [2]: 5,0006,000 min-I (rpm)
Cylinder compression
0.05 (0.002 in) max0.91.1 (0.0350.043 in) 20.00020.021 (0.78740.7882 in) 0.150.19 (0.0060.007 in) 0.210.25 (0.0080.010 in) 4.9754,990 (0.19590.1965 in) 4.9554.970 (0.19510.1957 in) 5.0005.012 (0.19690.1973 in) 0.0100.037 {0.00040.0015 in) 0.0300.067 (0.00120.0026 in) 33.28 (1.310 in) 12.96212.980 (0.51030.51 in) 13.00013.018 (0.51 180.5125 in) 0.0200.056 (0.00080.0022 in) 0.050.30 (0.0020.012 in)
0.10 (0.004 in) 2.0 (0.08 in) 20.05 (0.789 in)
Cylinder heads
Valve seat width Camshaft journal I.DClearance
NoI IN EX IN EX
Valves Stem 0.D
4.95 (0.195 in) 4.93 (0.194 in) 5.04 (0.198 in) 0.07 (0.003 in) 0.12 (0.005 in) 32.0 (1.26 in) 12.92 (0.509 in) 13.04 (0.513 in) 0.07 (0.003 in) 0.4 (0.016 in)