Caution: The engine must be supported from above using a winch or A-beam.
2. Remove the bolts securing the drive disk to the crankshaft.
3. Carefully wipe the removed disk with a rag soaked in acetone, completely removing traces of oil and grease. Check the working surface of the disk for cracks and other mechanical damage. Minor defects can be eliminated using fine-grained sandpaper. Check the toothed ring for cracks and chipped teeth. Place the disk on a flat surface to assess its flatness (use a flatness gauge). If necessary, give the assembly for turning.
4. Wipe the mating surfaces of the drive plate and crankshaft. If there are signs of oil leaks through the rear crankshaft oil seal, replace it (see Section Replacing the rear crankshaft oil seal).
5. Install the drive disc onto the crankshaft.
Attention! The mounting holes are located asymmetrically, which guarantees a clear fit of the assembly. Before screwing in the mounting bolts, lubricate their threaded part with a locking sealant.
6. Tighten the mounting bolts to the required torque in a strictly defined order.
7. Further installation is carried out in the reverse order of dismantling the components.