Attention! The presence of traces of engine oil on the head on the toothed belt side indicates that the camshaft seal is out of order and needs to be replaced.
1. Remove the pulley from the camshaft.
2. Drill two holes in the seal on two diametrically opposite sides and screw self-tapping screws into them. Pull the seal out using pliers by the screw heads.
3. Clean the seal seat thoroughly.
4. Lubricate the working lips of the new seal with engine oil and install it into the seat.
5. Install the pulley onto the camshaft.