Content of works	Frequency			Technical requirements	Tool and materials
	TO-1	TO-2	TO-3
Engine
To check:
- state and tightness of cooling systems, food, lubricant	+	+	-	Dribble of cooling liquid, fuel, oil is not allowed	Visually
- corner of an advancing of ignition of ZMZ-4025,-4026, UMZ-4215.	+	+	-	see section 9. If necessary to adjust	Stroboscope
To check fastening:
- heads of the block of cylinders (4215, ZMZ-4025, 4026)	-	+	-		Key of 17 mm
- oil case	-	+	-	To tighten the weakened nuts	Key of 13 mm
- filter settler (UMZ-4215), filter of thin purification of fuel (UMZ-4215)	-	+	-	To tighten the weakened nuts	Key of 13 mm
- radiator and water pump, case of the thermostat, pulley of the water pump and tension roller **	-	+	-	To tighten the weakened nuts	Key of 13 mm
- generator and starter	-	+	-	To tighten the weakened nuts	Key of 17 mm, 19 mm
- drives air and butterfly valves of the carburetor	+	+	-	To tighten the weakened fastening	Key of 10 mm, screw-driver
To adjust:
- belt tension (belts ** 4215, ZMZ-4025, 4026) drive of units	+	+	-		Ruler with a dynamometer, keys 12, 13 mm
- minimum frequency of rotation of a bent shaft idling and content of carbon monoxide (SO) and hydrocarbon (SN)	+	+	-		Tachometer, screw-driver, gas analyzer
- a gap between electrodes of candles	+	+	-	The gap has to be 0,8-0,95 mm (ZMZ-4025, 4026); 0,7-0,85 mm (ZMZ-4061, 4063, UMZ-4215)	Probe, candle key
- a gap between valves and yokes (4215, ZMZ-4025, 4026)	-	+	-		Key of 13 mm, screw-driver, probe
To clear:
- the case of the air filter of the carburetor and to blow the filtering element	-	+	-	To blow from within a corrugation, and then outside	Source of compressed air
-? the case of the air filter of the carburetor and to replace the filtering element	-	++	-	See section 4.1	Rags
- the case of the fuel filter settler and its filtering element (fall)	-	-	+	After installation of the case into place to be convinced of lack of dribble of fuel	Keys 10, 12 mm, flat-nose pliers, unleaded gasoline, rags
- a glass settler of the filter of thin purification of fuel (for UMZ-4215 engines) and to wash out the mesh filtering element. To replace the paper filtering element ***	-	+	-	After installation of a glass into place to be convinced of lack of dribble of fuel	Unleaded gasoline, rags
- high-voltage wires and pomekho-podavitelny tips of spark plugs	+	+	-		Unleaded gasoline, rags
- external surfaces of devices of ignition, cover and runner of the sensor distributor of ignition (4215, ZMZ-4025, 4026)	+	+	-		Unleaded gasoline, rags
To merge a sediment from the fuel tank (fall)	-	-	+		Capacity for gasoline, a key of 24 mm
To merge a sediment from the case of the fuel filter settler	-	+	-		Key 17
To replace:
- spark plugs	-	++	-		Key candle
- the filter of thin purification of fuel (for ZMZ-402, 406 engines)	-	-	-	Dribble of fuel is not allowed
Transmission
To check:
- state and tightness of a hydraulic actuator of coupling, transmission and back bridge	+	+	-	Dribble of liquid and oil is not allowed	Visually
- inhaling of a nut of a flange of the leading gear wheel of the back bridge	-	+	-		Keys 14, 17, 27 mm,
- fastening of a reducer of the back bridge	-	++	-	To tighten the weakened nuts	Key of 14 mm
- fastening of the main and working cylinders of coupling, axis of a pusher of the main cylinder of coupling	-	-	+	To tighten the weakened nuts	Keys 13, 17 mm
- a coupling case to the block of cylinders	-	-	+	To tighten the weakened nuts	Key of 14 mm
- fastening of the transmission and its cases	-	-	+	To tighten the weakened nuts	Keys 12, 19 mm
To clear:
- sapuna of the transmission and back bridge	-	+	-		Rags

* Operation on lubricant of knots and units of the car are specified in tab. 11.4 "The card of lubricant".

** Through each 500 km.

*** For the filter with the paper filtering element.