See also:

Heated Exhaust Gas Oxygen (HEGO) sensor - removal and refitting
Note: A new sealing ring will be required on refitting. Removal 1 Apply the handbrake, then jack up the front of the vehicle and support it on axle stands (see “Jacking and Vehicle Support”). 2 ...

Engine valve clearance check (Every 12 000 miles (20 000 km) or 12 months)
SOHC engines 1 The valve clearances must be checked with the engine cold. On carburettor models remove the air cleaner. 2 Disconnect the HT leads from the spark plugs and release them from the cl ...

Engine coolant
Checking engine coolant The concentration and level of engine coolant should be checked at the mileage intervals listed in the scheduled maintenance guide. The coolant concentration should be maint ...