1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 144Get this manual
Specifications Idle RPM Wide Open Throttle (W.O.T RPMModel 3040 Marathon40 SeaproModel 40 Idle Mixture Screw Adjustment (Preset-Turns Out) Float Level 45005500 RPM 50005500 RPM 1-12 14 916 in(14.29mm) 700800 RPM (In Forward Gear)
WME Carburetor Specifications
NOTE: Carburetor Number Stamped at Top of Carburetor FlangeCarburetor Number WME-36WME-36A WME-37WME-37A WME-38 WME-39WME-39A WME-42WME-42A WME-63 WME-64 WME-65 WME-66 WME-67 Model H.P30 H.PManual 30 H.PElectric 40 H.PManual 40 H.PElectric 30 H.PEHO 30 H.P Manual 30 H.PElectric 30 H.PEHO 40 H.PManual 40 H.PElectric Main Jet Bowl Back Size Vent Jet Drag Jet 0.054 in0.054 in0.066 in0.066 in0.054 in0.054 in0.054 in0.054 in0.066 in0.066 inNone None None None None None None None None None None None None None None None None None None None Float Setting 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) 916 in(14.29 mm) Pre-Set Idle Screw (Open) 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns 1-12 Turns