Suzuki DF25/DF30 Four Stroke Service Manual, Page 91Get this manual
FUEL SYSTEM 5-3
FUEL LEAKAGE CHECK PROCEDURE
After performing any fuel system service, always be sure there is not fuel leakage by checking as follows1Squeeze fuel primer bulb until you feel resistance2Once pressurized, check all connections and components for any signs of leakage
FUEL HOSE CONNECTION
Note that fuel hose connection varies with each type of pipeBe sure to connect and clamp each hose correctly by referring to the figure For type "A" (short barbed end) pipe, hose must completely cover pipe"A"