Honda BF20 BF2A Outboard Motors Manual, Page 20Get this manual
HONDA BFSOBFSA
6CARBURETOR
1) Start the engine and allow it to warm up to normal operating
2) temperatureWith the engine idling, turn the pilot screw in or out to the setting that produces the highest idle rpmThe correct settina will usually be obtained at approximately the followingnumber of turns out from the fully closed (lightly seated) position:
Pilot screw opening
2 turns (Engine serial number
1000001-1 007046) 1-314 turns (Engine serial number 1007047 and subsequent) BF20L, BF2A: 2-118 turns