Over time, during operation, the gasket under the engine head cover loses its elasticity and strength and oil leaks from under the cover

You can try tightening the cover bolts.

If the oil leak from under the cylinder head cover could not be eliminated by tightening the cover bolts, replace its gasket.

You will need: a 12 wrench, a screwdriver.

Disconnect the wire from the negative terminal of the battery.

Drain the cooling system.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Loosen the inlet hose clamp and move it aside.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Disconnect the hose and wire harness holders.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Remove the crankshaft position sensor harness from the holder.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Remove the high voltage wire ends from the spark plugs.

If the replacement of high-voltage wires is not expected, the tips can not be removed from the wells of the cover

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Loosen the ventilation hose clamp and remove the hose

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Loosen the suction hose clamp and remove the hose

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Disconnect the wire blocks from the primary connectors of the ignition coil.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Remove the head cover bolts...

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Remove the cover along with the gasket, high voltage wires and ignition coils.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Inspect the condition of the valve cover seal and oil scraper tubes, replace if necessary

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Remove the cover gasket.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Remove the gaskets for sealing the candle channels.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

With a screwdriver, unscrew six screws and, prying with the same screwdriver, remove the oil deflector.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

After washing all the parts in kerosene, wipe dry.

We degrease the mating surfaces of the oil deflector and valve covers, as well as the screws.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

We apply glue-sealant to the oil deflector and, after setting it in place, press it tightly.

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

How to replace the cylinder head cover gasket ZMZ-406 Gazelle

Wipe the surface of the cylinder head

Install a new gasket on the cover, install the cover in the reverse order of removal, and connect all hoses and wires