Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 121Get this manual
IIISERVICE INFORMATION 1MAINTENANCE STANDARDS 2TORQUE VALUES 3WIRING DIAGRAM 4TROUBLESHOOTING 5MAINTENANCE SCHEDULE
1MAINTENANCE STANDARDS
Item Engine Idle speed Cylinder compression Cylinder Piston Sleeve 1.0Skirt .0 Piston -to-cyl nder clearance Piston pin bore 1.0Piston pin Piston pin 0.0Piston-to-piston pin clearance Piston ring Side clearance (Topsecond) End gap (Topseco nd) Connecting rod Sma ll end 1.0Big end oil clearance Big end side clearance Crankshaft Crank pin .0Journal .0 (at oil pan) Oil pan Standard 1,550 100 min -1 (rpm) 1,079 98 kPa (156 14 psi) at 1,000 min -1 (rpm) 60.000 mm (2.3622 in) 59.985 mm (2 .3616 in) 0.0150.050 mm (0.00060.0020 in) 18.002 mm (0.7087 in) 18.000 mm (0 .7087 in) 0.0020.014 mm (0.00010.0006 in) 0.0600.095 mm (0.00240.0037 in) 0.15-0.35 mm (0.0060.014 in) 18.005 mm (0.7089 in) 0.040.063 mm (0.00160.0025 in) 0.10.7 mm (0.0040.028 in) 29.98 mm (1.180 in) 24.993 mm (0.9840 in) 25.013 mm (0 .9848 in) 0.0200.046 mm (0.00080.0018 in) IN EX Stem 0.0IN EX Guide I.DIN EX Stem -to-guide clearance IN EX Seat width 0.060.14mm 0.110.19 mm 5.48 mm (0 .216 in) 5.44 mm (0.214 in) 5.50 mm (0 .217 in) 5.50 mm (0.217 in) 0.0200.044 mm (0.00080.0017 in) 0.0600.087 mm (0.00240.0034 in) 0.8 mm (0 .03 in) Service limit