Engine fuel supply and exhaust system of motorcycle Ducati ST2 (1997-2003)

Throttle body adjustments
The throttle body is a crucial component in engine power management and is responsible for performance and exhaust emission control. During production the throttle body assembly is adjusted and set using data from extensive testing. Each part of the...

Adjusting the throttle and choke cables
Caution! Adjustment of the throttle and starter cables can change the results of other adjustments made previously. Before you adjust these cables, refer to the previous section. The throttle twist grip must have a free travel of 2 to 4...

Raising the fuel tank
Proceed as follows: Release the rear lock and remove the seat. Unscrew the two screws (A) fixing the front cover to the tank support. Remove the cover disengaging it from the ignition switch. Unhook the spring front spring clip (B) from the tank...

Removing the fuel tank
Loosen the clip (2) and disconnect the breather pipe from the three breather ways on the tank flange. Disconnect the fuel level sensor and pump connector (3) from the main cable. Loosen the clip on the infeed pipe (M) of the OUT fillers and the...

Disassembling fuel tank components
Changing the fuel filler cap unit To remove the fuel filler cap unit, proceed as follows: Open the filler cap. Unscrew the 3 outer screws (1) fixing the ring nut to the fuel filler recess. Unscrew the anti-theft screw (2) on the inside. Remove the...

Removing the exhaust system
Unscrew and remove the screws (1) holding the silencer to the pillion passenger rear footrests. At reassembly ensure that all parts are refitted as shown in the relative section. Unhook the spring (2) and remove the silencer from the exhaust pipe....

Removing the air filter box
Unhook the spring clips (1) on both sides of the filter box. Remove the cover. Remove the filter cartridge. At reassembly, fit the cartridge with the fins pointing forwards in the direction of travel. Loosen the clips (2) on the manifold hoses...

Removing the throttle body
Loosen the clips (1) and (2) on the intake manifolds. Disconnect the throttle body from the intake manifolds but leave it connected to the accelerator and choke cables and to the main cable. At reassembly, the clips (1) and (2) must be fixed with...

Removing the intake manifolds
Unscrew and remove the 2 nuts (3) and remove the intake manifold from the vertical head. Remove the O-ring. Plug the exhaust manifold of the vertical head and the manifold of the horizontal head. Note for Sams version At reassembly, fit the...