Honda BF8, BF9.9 and BF10 Outboard Motors Shop Manual., Page 19Get this manual
Engine Does Not Run Smoothly Engine starts, but stalls soonIdle scmd is not stable or stalls
or fouled spark caused from excessive choke application (SE valve type)
Remove spark plug, clean and reinstall itClose the choke and restart the engine
Faulty SE thermal valve (SE thermal valve type)Spark plug faulty
Inspect: P6-7
Clean and adjust or replace: P3-6
Carburetor pilot screw andlor throttle stop screw misadjusted
Adjust: P6-8
Carburetor slow circuit clogged