See also:

Timing belt renewal - CVH engines (Every 36 000 miles or 3 years)
Refer to Chapter 2, Part B. ...

Camshafts and cam followers - removal, inspection and refitting
Note: Once the timing chain has been removed from the camshaft sprockets, do not turn the crankshaft until the timing chain has been correctly refitted - this is to prevent contact between the val ...

Weber 2V carburettor automatic choke unit - removal, checking and refitting
XR3 models Removal 1 Remove the air cleaner (Section 2). 2 Disconnect the electrical lead to the automatic choke. 3 Undo the three choke housing cover retaining screws, withdraw the cover and bi ...