2004 SR Johnson 2 Stroke 9.9, 15, 25, 30 HP Outboards Service Manual, Page 154Get this manual
FUEL SYSTEM
CARBURETOR
Disassembly
9.915 MODELS
IMPORTANT: Changing original factory fuel mixture calibrations beyond the limits allowed by the tamper resistant device is violation of federal lawChanges to the original design or adjustment limits become the responsibilty of the servicing technician andor the ownerThe following procedures must be followed EXACTLY to ensure compliance with emissions standardsIMPORTANT: This carburetor uses tamper resistant low speed needle and body cover assembly (except 10HR models)The needle valve is NOT removable from the cover and is adjustable within limited rangeIf the needle is turned for any reason, it should be returned to its original locationHR Models Only Remove the low-speed needle and spring from the carburetor body coverAll Models Remove the six cover screwsLift the cover and gasket off the carburetor body