2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Manual, PN 5005483, Page 120Get this manual
FUEL SYSTEM TROUBLE CHECK CHART
CARBURETOR
ENGINE WILL NOT START
STARTS, WILL NOT IDLE
WILLNOT IDLE SLOWLY
SPITS AT IDLE, LEAN
ENGINE RICH AT IDLE
EXCESSIVE OIL USE
Sl'ALLS ON ACCELERATION