See also:

Oil pump - removal and refitting
Note: A suitable puller will be required to remove the crankshaft pulley. A new crankshaft pulley bolt, a new lower timing chain cover gasket, and a new oil pump gasket, must be used on refitting. ...

Oil filler cap cleaning - OHVand HCS engines (Every 6000 miles or 6 months)
1 Simply pull the oil filler cap from the rocker cover and, where applicable, disconnect the hose(s) from the cap. 2 Inspect the filler cap, and if necessary clean the cap using clean petrol to re ...

Crankshaft and main bearings - removal and refitting
1.8 litre (R2A type) Removal 1 With the engine removed from the vehicle, remove the timing belt, crankshaft sprocket and thrustwasher. 2 Remove the pistons and connecting rods. If no work is to ...