Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 119Get this manual
Carburetor Installation 1Install bolts securing carburetor assembly to
intake manifold
aAir IntakeBreather HoseElectrothermal Valve Wires
5Connect fuel pump outlet hose to carburetor
bowlSecure hose with sta-strap (refer to "Fuel
Pump InstallationRemoval" in section 3A)aBolts (3)