2. Loosen the lower mounting bolts, unscrew the upper generator tension bolt, tilt the generator toward the engine and remove the drive belt.
3. Unscrew the 4 timing belt cover mounting bolts and remove it.
4. On engine models manufactured from 2/82, the timing belt cover consists of two parts, each with its own rubber gasket. The lower cover has a mark for setting the first cylinder to TDC. The lower cover can only be removed after the pulley has been removed from the crankshaft.
5. Turn the engine crankshaft until the marks on the camshaft pulley and cylinder head, as well as on the crankshaft pulley and oil pump housing, are aligned.
6. Fix the engine crankshaft by removing the starter and fixing the flywheel ring gear.
7. Unscrew the mounting bolt and remove the V-belt pulley from the crankshaft.
8. Loosen the timing belt tension roller mounting bolts and use a screwdriver to move the tension roller away from the belt, compressing the spring, and tighten the bolts.
9. To reinstall the timing belt, mark its direction of movement.
10. Remove the timing belt.
Caution! After removing the belt, it is strictly forbidden to turn the crankshaft and camshaft pulleys, as this may cause the pistons to hit the open valves, which will lead to serious damage to the engine.
11. Remove the toothed pulley from the crankshaft, as well as the thrust washer.
12. Using the appropriate tool, remove the front crankshaft oil seal ring.
13. Lubricate the working edges of the new sealing ring and install it in place using the adapter sleeve and pulley mounting bolt.
14. Install the thrust washer with the convex side facing the sealing ring and the toothed pulley.
15. Install and adjust the timing belt tension, checking the alignment of the timing marks.
16. Further installation should be carried out in the reverse order of removal.