
The tightness of the needle valve is checked on a stand that supplies fuel to the carburetor at a pressure of 30 kPa (3 m w.c.)

You will need: keys "for 10", "for 13", "for 14", "for 17", "for 19", "for 21", "for 22", "for 36" (or a special key for the crankshaft pulley fastening nut, in the absence of such a key, you can use a gas wrench),

We remove the tips of the spark plugs together with the high-voltage wires, the ignition coils (you can only disconnect the connectors by leaving them on the valve cover), the throttle cable and, having disconnected the wires from the sensors of the lubrication and cooling systems, remove the wiring harness from the brackets of the head cover .

You will need: micrometer, caliper, ruler
Pre-soak the soot with kerosene. Mechanical cleaning of soot is possible