Suzuki DR-Z400S 2001 Service Manual page 116

FUEL AND LUBRICATION SYSTEM 4-7
Remove the piston valve control solenoid 1 and joint pipe 2
(Except for E-03, 28, 33).
1
2
Remove the throttle position sensor.
Remove the coasting richer pump assembly.
Remove the starter plunger assembly.
Remove the top cap.