Suzuki outboard motors 1988 2003 repair manual., Page 77Get this manual
FUEL SYSTEM 4-15 CLEANINGINSPECTION
See Figures and 4
Never dip rubber parts, plastic parts, diaphragms, or pump plungers in carburetor cleanerThese parts should be cleaned only in solvent, and then blown dry with compressed airPlace all metal parts in screen-type tray and dip them in carburetor cleaner until they appear completely clean, then blow them dry with compressed airBlow out all passages in the castings with compressed airCheck all parts and passages to be sure they are not clogged or contain any depositsNever use piece of wire or any type of pointed instrument to clean drilled passages or calibrated holes in carburetorMove the throttle shaft back and forth to check for wearIf the shaft appears to be too loose, replace the complete throttle body because individual replacement parts are not availableInspect the main body, airhorn, and venturi cluster gasket surfaces for cracks and burrs which might cause leakCheck the float for deteriorationCheck to be sure the float spring has not been stretchedIf any part of the float is damaged, the unit must be replacedCheck the float arm needle contacting surface and replace the float if this surface has groove worn in itInspect the tapered section of the idle adjusting needles and replace any that have developed grooveAs previously mentioned, most of the parts which should be replaced during carburetor overhaul are included in overhaul kits available from your local marine dealerOne of these kits will contain matched fuel inlet needle and seatThis combination should be replaced each time the carburetor is disassembled as precaution against leakageASSEMBLY
1Install new carburetor O-ring into the carburetor body2Apply an all-purpose lubricant to new idle speed screwInstall the idle speed screw and spring The standard setting is: