2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Manual, PN 5005483, Page 114Get this manual
FUEL SYSTEM
CARBURETOR
Top of float should touch lower gauge surface but should not touch upper gauge surfaceInstall float chamber and new gasketApply Locquic Primer and Screw Lock to the threads of four float chamber screwsInstall the screws and torque in an "X" pattern 25 to 35 inIbs(2.8 to 4.0 Nm)2
1Float gauge 2Top of float 3Lower gauge surface 4Upper gauge surface
1Float chamber and gasket
DR4808A
If float level is not correct, lightly bend metal float arm to adjust levelBe careful not to force float needle valve into seatCheck for correct float drop dimensionThis dimension affects the full opening of the inlet needle and is critical to correct operation of the carburetorWith carburetor body in normal running position, the float must drop open from base of carburetor body to dimension shown
Installation
CAUTION
Replace any fuel hoses if deteriorated or damaged