1. Remove toothed belts, pulleys and covers.
2. Remove the old oil seal with a screwdriver, wrapping its blade with electrical tape so as not to scratch the camshaft and the walls of the hole.
3. Press in a new oil seal using a suitable mandrel. The camshaft seals are installed in the same position as the crankshaft seals (see section «Replacing the front crankshaft oil seal»).
The arrow on the oil seal indicates the direction of rotation of the camshaft.