Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 11Get this manual
HONDA BFeOA-e5A
4MAINTENANCE STANDARDS
Unit: mm (in)-
Part Engine
Item Idle meed (in neutral) Cylinder compression
Standard
Service limit
900 50 min-I (roml
Carburetor
Main jet Pilot screw opening Float height
15 kgcrn2 (212 psi) at 500 min- (rpm)
2 turns out (0.6) 0.10 0.1 (0.004 0.006)-
Spark plug Valves Valve clearance Stem O.DGuide I.DSeat width Spring free length Stem-to-guide clearance Rocker arm Rocker arm I.DRocker arm shaft O.DRocker arm shaft-torocker arm clearance Piston Skirt O.DPiston-to-cylinder clearance Pin bore I.DPin O.DPin-to-pin bore clearance Piston ring Ring side clearance
IN INIEX IN
0.18-0.22(0.007 -0.009) 5.475-5.490(0.21 56-0.2161) 5.500-5.51 (0.2165-0.21 70) 0.9 1.1 (0.035 0.043) 0.9 (0.035-0.043) -
5.45(0.21 5) 5.54(0.218) 2.0(0.08) (0.08)