See also:

Mixture adjustment check (Every 6000 miles (10 000 km) or 6 months)
Caution: Refer to the precautions in Section 1, Chapter 4, Part A or B (as applicable), before proceeding. Before carrying out any carburettor adjustments, ensure that the ignition timing and sp ...

Auxiliary drivebelt check (Every 12 000 miles (20 000 km) or 12 months)
1 Refer to the Specifications at the beginning of this Chapter and check the tension of each drivebelt at the point stated. Check the full length of each drivebelt for cracks and deterioration. It ...

Weber 2V carburettor automatic choke unit - adjustment
XR3 models 1 Remove the air cleaner as described in Section 2. 2 Disconnect the electrical lead to the automatic choke. 3 Unscrew and remove the three screws which hold the automatic choke housi ...