Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 114Get this manual
Carburetor Adjustments Float Level
1With carb uretor turned upside down and carb
scale seated on inner edge, check float level from top of float to float bowl flange as shown
Carburetor Removal
1Disconnect breather hose from ai intake2Discon nect electrothermal valve wires (Ye llow)
aAir IntakeBreather HoseElectrothermal Valve Wires
3Cut sla-strap and disconnect fuel pump outlet hose (refer to "Fuel Pump Removal" in section
Floal Height
0.47-0.63 in(12.0-16.0 mm)