For convenience, we take out the oil dipstick.
Remove the ignition distributor cover (see Replacing the distributor rotor).
Turn the crankshaft clockwise with the key (front view) until label matches (drilling) on the camshaft sprocket with a protrusion on the bearing housing.
In this case, the mark on the crankshaft pulley should be located opposite the TDC mark (long) on the camshaft cover.
This position of the shafts corresponds to the end of the compression stroke in the 4th cylinder. We adjust the gaps of the 8th and 6th cams (in the direction of travel).
To adjust the gap with a wrench «at 17» Loosen the adjusting bolt locknut.
We insert a feeler gauge 0.15 mm thick between the valve lever and the cylindrical part of the cam. key «at 13» turn the adjusting bolt, setting the required clearance. The movement of the probe should be free, but without play.
We take out the probe and, holding the adjusting bolt with the wrench, tighten the lock nut with the second wrench.
This raises the adjusting screw slightly. After that, check the gap and, if necessary, repeat the adjustment.
Rotate the engine crankshaft 180°clockwise. This will rotate the camshaft by 90°. For convenience, the mark on the camshaft sprocket can be duplicated from the outside.
The angle of rotation of the camshaft can also be controlled by the distributor slider. It will also rotate 90°; after which we adjust the next pair of valves.
The sequence of valve adjustment is shown in the table:
Angle of rotation of the crankshaft | No. of adjusting bolts |
0° | 8 and 6 |
180° | 4 and 7 |
360° | 1 and 3 |
540° | 5 and 2 |