See also:

Ignition system component check (Every 6000 miles or 6 months)
1 Where applicable, remove the distributor cap and thoroughly clean it inside and out with a dry lint-free cloth. Examine the four HT lead segments inside the cap. If the segments appear badly bur ...

Air cleaner air temperature control - description and testing
Thermostatically-controlled air cleaner 1 On all pre-1986 models and certain models from 1986 onwards, the air cleaner is thermostatically-controlled by a vacuum operated system to provide air at ...

Engine idle speed 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 ...