Suzuki WagonR+ RB310 Service Manual page 2584

4) Connect fuel hose (1) and vapor hose (2) to pipes as shown in
figure and clamp them securely.
CAUTION:
When connecting joint, clean outside surfaces of pipe
where joint is to be inserted, push joint into pipe till joint
lock clicks and check to ensure that pipes are connected
securely, or fuel leak may occur.
5) Connect fuel pump wire at coupler (1).
6) Connect negative cable at battery.
With engine "OFF" and ignition switch "ON", check for fuel leaks.
ENGINE FUEL 6C-13