Examination
Turn on and warm up the engine until the coolant temperature is 80°±9°C, and then turn off the engine.
Remove all spark plugs.
Remove the cylinder head cover.
Place the transmission in neutral and apply the parking brake.
Turn the crankshaft by the central bolt clockwise until the groove on the pulley aligns with the mark «T». The pistons of the 1st and 4th cylinders are now at TDC. Cylinders are counted from left to right. Cylinder 1 is located on the side of the engine V-belt.
By moving the rocker arms of cylinders 1 and 4 up and down by hand, check which cylinder is at TDC. If there is clearance at the same time in the intake and exhaust valves, then the cylinder is in the TDC position of the compression stroke.
If the piston of the 1st cylinder is in the TDC position of the compression stroke, then the clearance of the valves indicated by the white arrows is adjusted.
If the piston of the 4th cylinder is in the TDC position of the compression stroke, then the clearance of the valves indicated by black arrows is adjusted.
ATTENTION: To change the position of the cylinder to another, it is necessary to turn the crankshaft one revolution clockwise.
Measure the valve clearance between the rocker arm and the valve surface with a feeler gauge.
If the feeler gauge is pulled through with an interference fit, the clearance is correctly adjusted.
Required valve clearances
Adjustment
Loosen the locknut about 1/2 turn while holding the adjusting screw with a screwdriver.
Turn the adjusting screw to set the valve clearance by constantly moving the feeler gauge.
Tighten locknut.
Recheck the valve clearance and readjust if necessary.
Turn the crankshaft one more turn and check the gaps in the other valves.
Then check the insertion and tightness of the mounting screws and rocker arm mounting brackets.
Attach the cylinder head cover.