Elements of transmission motorcycle Ducati ST2 (1997-2003)

Adjusting chain tension
Raise the motorcycle onto its centre stand. Turn the rear wheel slowly until the chain is fully stretched. At the halfway mark on the swinging arm (see adhesive label on arm), press the chain upwards with one finger and measure the amount of slack....

Removing the gear change lever, the sprocket cover and the clutch drive
Unscrew the screw (1) clamping the gear change lever to the selector shaft. Remove the lever from the shaft but leave it connected to the pedal. At reassembly, position the gear change lever on the selector shaft as indicated in "Adjusting the...

Removing the final drive sprocket
Loosen the nut (1) on the rear wheel spindle. Unscrew the chain tensioner bolts (2) fully and then push the wheel forward. Engage a low gear to provide resistance for the next operation. Unscrew the two bolts (3) on the sprocket stop plate. Remove...

Changing the rear sprocket — inspection
To change the rear sprocket you must first remove the complete rear wheel from the bike following the instructions given above in "Removing the rear wheel". Proceed as follows: Remove the complete sprocket flange (1) from the wheel. Clamp the pins...

Washing and lubrication the chain
Washing Chains with O-rings must be washed in petrol, diesel fuel or paraffin oil. Do not use benzene, trylene or other solvents which will damage the rubber O-rings. Only use sprays which specify that they are for use with O-ring chains....

Clutch cylinder and hose routing
When fitting a new hose between the clutch master cylinder and the clutch drive, care must be taken to position connectors on the cylinder and the drive at the correct angles. Warning! Incorrectly positioned hoses can cause clutch faults....

Disassembly gear selector
Unscrew the gear selector retaining screws. Pull out the gear selector with drive shaft, spring and plate.

Disassembly clutch
Unscrew the four clutch inspection cover retaining screws. Remove the cover and the soundproofing gasket. Unscrew the retaining screws and extract the spring cups and the clutch springs. Pull out the plate pusher. Remove the drive pin and the clutch...

Disassembly gearbox
Pull out the fork guide rods. Move the forks to disengage them from the selector drum slots. Remove the gear selector forks. Pull out the fork drum. Remove the primary and secondary shafts complete with gears. Do not damage or lose the shims on the...

Clutch unit overhaul
The clutch is disengaged using a drive unit consisting of a thrust piston (1) which operates inside a support, connected to the alternator cover. This piston (1) pushes a control rod (2), fitted in the primary gearbox shaft which, in turn, drives...

Gearbox overhaul
Check the condition of the front coupling gear teeth. They must not be damaged in any way and must have sharp edges. The idle gears must rotate freely on their shafts. The idle gears must have a minimum axial clearance of 0.10 mm/0.0039 in. The...

Shimming the gearbox shaft
To establish the total shimming for the primary shaft "SA" and the secondary shaft "SB", proceed as follows: Measure "A" and "B" on the primary and secondary shafts (on the latter, you must also include the shim adjustment thickness "C" of 2.3 mm);...

Overhaul selector drum
To establish the clearance between the fork drive pin and the selector drum slot, measure the two values with a caliper gauge. If the limit is exceeded, establish which part must be changed, by comparing the valued with the values of new components....

Overhaul gear selector forks
Inspect the gear selector forks. All bent forks must be changed as they may lead to difficulties in gear changing or may suddenly disengage the gears under load. Use a feeler gauge to check the clearance of each fork in its gear groove. If its...

Reassembly clutch
Before refitting the clutch cover, make sure that it has a seal ring on the crankshaft with relative washer and circlip. When changing the seal ring (1), refit and position the new part as shown in the diagram. Position the reference bush (2) and...

Reassembly gear selector lever
If the selector lever components have been separated during disassembly, you must correctly position the lever (1) in relation to the stop plate (2). The lever pin must be in the exact centre of the plate; to adjust the position, loosen the lock nut...