1. Lubricate the bushings...
2....and the distributor shaft with a thin layer of engine oil.
3. Before installing the coupling, install the runner with the outer contact towards the contact of the first cylinder in the cover.
4. Install the coupling on the shaft so that the coupling pins coincide with the slots on the camshaft with the piston of the first cylinder set at TDC (see note).
Information copied from the portal VAZbook
Note: Position of camshaft slots with the piston of the first cylinder set to TDC.