1.6. Start-up and stop of the engine

Launch of the engine
General provisions
Before launch of the engine check levels of cooling liquid in the cooling system, fuels and oils in an engine case.
If necessary pump over a power supply system.
Install the lever of switching of transfers to neutral situation.
As soon as the engine begins to work, immediately release an ignition switch key, it is automatically
will return to situation I. Warm up the engine. Temperature of cooling liquid of the heated-up engine has to be not below 60 °C. Do not begin the movement on the car with not heated-up engine.
It is strictly forbidden to accelerate warming up at a high frequency of rotation of a bent shaft.

Launch of the UMZ-421.10-10 (UAZ-31601) engine
 Launch of the cold engine at a temperature from 0 °C and above
Pump up fuel in the carburetor the lever of the manual drive of the fuel pump.
Sharply press several time a pedal of control of the throttle gate of the carburetor (an accelerator pedal).
Switch off coupling, then ignition and a starter, but no more than on 5 pages. Intervals between inclusions have to be old-tera not less than 10-15 pages.
If the engine is not launched after three attempts, stop start-up, find out and eliminate malfunction.
 Launch of the cold engine at a temperature from 0 to -20 °C
Before start-up execute the following operations:
1. Turn the starting handle a bent shaft of the engine on 3–5 turns.
2. Extend to the full the handle of control of the air gate of the carburetor (for this purpose it is necessary to press previously a pedal of management of a butterfly valve).
Repeat the subsequent operations according to the instructions "Launch of the Engine at 0 °C and Above".
At warming up of the engine gradually, in process of increase in frequency of rotation of a bent shaft, drown the handle of control of the air gate against the stop.
 Launch of the cold engine at a temperature below -20 °C
At a low temperature you make launch of the cold engine after its preliminary warming up by a heater-podogrevatelem or otherwise (steam, hot air, etc.).
Before launch of the engine it is recommended to warm up the transistor switchboard for what include ignition and launch the engine in 3 min.
The further sequence of operations remains same, as well as in case of launch of the cold engine at a temperature of surrounding air from 0 to -20 °C.
 Launch of the hot engine
At launch of the hot engine do not cover the air gate of the carburetor and do not press sharply a pedal of control of the throttle gate as it will give to pereobogashcheniyu mixes and will complicate launch of the engine.
If nevertheless combustible mix appeared pereobogashchennoy, then it is necessary to blow cylinders air for what smoothly press to the full a pedal of control of the throttle gate of the carburetor and immediately turn a starter a bent shaft of the engine during 5–10 pages.

Launch of UMZ-420.10-10 and UMZ-4213.10 engines (UAZ-3160 and UAZ-31605)
 Launch of the cold engine at a temperature from -20 °C and above
1. Include ignition. At the same time the electric fuel pump which operation is listened at the idle engine has to turn on.
2. If the engine is launched after a long stop, it is recommended to wait until the fuel pump is switched-off (about 5 c).

Note
Before start of the engine the power supply system for simplification of pumping of system of fuel feeding recommends "to pit" air via the special screw of the filter of thin purification of fuel against Sukhoi.


3. At a serviceable control system the control lamp of malfunction (on the dashboard) has to join and go out. If the control lamp does not die away, then it is necessary to define and eliminate malfunction.

Prevention
If on the car converter of the fulfilled gases is established, operation of the engine with the burning control lamp leads to failure of converter and the sensor of concentration of oxygen in the fulfilled gases.

4. Press a coupling pedal against the stop.
5. Include a starter.
6. After launch of the engine release a key (switch off a starter).
Make repeated attempt to launch the engine not earlier than through 15–20 pages.
At launch of the engine it is not necessary to press a pedal of management of a butterfly valve.
After launch of the engine the system of its management will automatically increase idling frequency for warming up of the engine and will gradually, reduce in process of warming up of the engine it to the minimum value.
If the engine is not launched after three attempts, stop start-up, find out and eliminate malfunction.
 Launch of the cold engine at a temperature below -20 °C
At a low temperature carry out launch of the cold engine after its preliminary warming up by a heater-podogrevatelem or otherwise (steam, hot air, etc.).
The further sequence of operations remains same, as well as in case of launch of the cold engine at a temperature of surrounding air from -20 °C and above.
 Launch of the hot engine
The sequence of operations remains same, as well as in case of launch of the cold engine at a temperature of surrounding air from -20 °C and above.
If the engine is not launched from three attempts, press against the stop a pedal of an accelerator and on 2–3 with include a starter. At the same time the control unit will fulfill the "Mode of a Purge of Cylinders of the Engine" function then repeat start-up attempt.

Launch of engines 425LTRU of the car UAZ-31604
 Launch of the hot and cold engine at a temperature from 0 °C and above
Install a key in the ignition switch (lock) in situation I. Wait, the control lamp of inclusion of candles of an incandescence will not go out yet. Switch off coupling, then a starter (situation II), without pressing an accelerator pedal. You hold a starter included before launch of the engine, but no more than 10 pages.
Repeatedly try to launch the engine not earlier than through 15–20 pages.
If the engine is not launched or becomes deaf, return a key to situation 0. Then establish a key in situation I, wait, the control lamp of inclusion of candles of an incandescence will not go out yet, and include a starter. If the engine is not launched after three attempts, stop start-up, find out and eliminate malfunction.
Control of the frequency of rotation of a bent shaft of the engine at warming up is exercised automatically.
At a temperature of air above 0 °C the heater of the fuel filter has to be switched off.
 Launch of the cold engine at a temperature from 0 to -20 °C
Include the switch located on dashboards, a heater of the fuel filter.
Install a key in the ignition switch in situation I, at the same time the heater of the fuel filter and candles of an incandescence will join. For warming up of the fuel filter wait 1 - 1,5 min.
Return a key to situation 0.
The further sequence of operations remains same, as well as in case of launch of the cold engine at a temperature of 0 °C and above.
 Launch of the cold engine at a temperature below -20 °C
Launch the engine after its preliminary warming up by a heater-podogrevatelem or otherwise (steam, hot air, etc.).
The further sequence of operations remains same, as well as in case of launch of the cold engine at a temperature from 0 to -20 °C.

Engine stop
For a stop of the engine turn a key in the ignition switch in situation 0. Before a stop of the engine it is necessary to allow to it to work within 1–2 min. with a small frequency of rotation of a bent shaft.