Tightening order for cylinder head cover bolts
Checking valve clearances
1 - locknut, 2 - adjusting bolt, 3 - spring, 4 - cam, 5 - pusher (lever arm), 6 - plate, 7 - valve, 8 - valve spring
Valve clearance adjustment
1 - cam, 2 - pusher (valve lever), 3 - adjusting bolt, 4 - lock nut
1. Remove the air filter and disconnect the high voltage wires from the ignition distributor and spark plugs.
2. Remove the cylinder head cover by unscrewing the ten bolts of its fastening (in reverse order as shown (see fig. Tightening order for cylinder head cover bolts).
3. Unscrew the spark plugs to make it easier to turn the engine crankshaft.
4. Rotate the crankshaft (in the direction of its working rotation) until the cam of the valve under test is set upwards.
5. Using a feeler gauge, check the clearance between the tappet and cam of this valve (see fig. Valve clearance adjustment). The gap, measured with the engine cold, between the valve stem and its tappet should be 0.020 mm for the intake valve and 0.25 mm for the exhaust valve.
6. If necessary, adjust the valve clearance by turning the clearance adjustment bolt 3 accordingly (see fig. Valve clearance adjustment).
7. Tighten to the appropriate torque (see subsection 4.1.1.9) ten bolts of fastening of a cover of a head of the block of cylinders in the order shown in fig. Checking valve clearances.
8. Screw in new spark plugs.
9. Connect the high voltage wires to the ignition distributor and spark plugs.
10. Install the air filter.
Visitor comments