Remove the cylinder head cover (see "Adjustment of thermal clearances in the engine valve mechanism")

The crankshaft position (timing) sensor type (2612.1.113 BOSCH or 406.3847113) of the inductive type is designed to determine the angular position of the engine crankshaft, synchronize the operation of the controller with the engine's working process and determine the crankshaft speed.

If there are signs of oil leakage through the crankshaft seals, first check if the crankcase ventilation system is clogged and if its hoses are pinched, repair if necessary

Usually, oil baffle caps are changed when there is increased oil consumption, accompanied by a large emission of smoke from the muffler

The device of the fuel priming and fuel priming pumps is shown in the figures

For lapping the valves, it is most convenient to use a special mechanical device (reversible drill). In addition, ready-made manual valve holders are available