Honda BF20 BF2A Outboard Motors Manual, Page 7Get this manual
BFSO-BFSA
4MAINTENANCE STANDARDS PART ITEM
Engine Carburetor Idle speed Cylinder compression Main jet Pilot screw BF20S:
STANDARD 140010 min" (rpm) 6.5 kgcrn2 (92.4 lbsin2 )[800 rnin"(rprn) #70 turns (Engine serial number 10000011007046) 1-314turns(Engine serial nurnber100704j and subsequent) 2-18 turns 10.5-13.5 rnrn (0.413-0.531 in) 0.6-0.7 rnrn (0.024-0.028 in) 0.7-0.9S2 6.3-7.7KS-l 0.2-0.6 rnrn (0.008-0.024 in)
SERVICE LIMIT
BF20L, BF2A:
Float height Gap Transistor unit Primary side Secondary side Air gap Valve clearance Stem O.DGuide I.DStem-to-guide clearance Seat width Spring free length
IN EX IN EX INIEX