1. The maintenance instruction
2. Maintenance service
3. Engines
4. Fuel system
    4.1. Fuel system with the carburettor
      4.1.1. The fuel pump
      4.1.2. The gauge of level of fuel in a tank
      4.1.3. A fuel tank
      4.1.4. Removal and carburettor installation
      4.1.5. Carburettor dismantling
      4.1.6. Carburettor work
      4.1.7. Carburettor adjustment
      4.1.8. Starting arrangement OVAD
      4.1.9. The subsequent cooling of the engine
      4.1.10. An inlet collector
      4.1.11. A final collector
    4.2. One-dot systems of injection of fuel
    4.3. Multidot systems of injection of fuel
5. Systems of greasing, cooling
6. Release system
7. Coupling
8. Transmissions
9. Power shafts
10. A steering
11. Suspension brackets
12. Brake system
13. A body
14. An electric equipment

4.1.8. Starting arrangement OVAD

Installation of the auxiliary valve приоткрывания a starting diaphragm

2 – a connector,

3 – a second membrane,

4 – a tank

The auxiliary valve приоткрывания a starting diaphragm (the work scheme)

1 – the adjusting screw,

2 – a calibrated jet,

3 – a shaft of management of a starting diaphragm,

4 – the pipeline разряжения,

5 – a receiver,

М1, М2 – membranes

The mechanism has двухмембранную with разряжением a control system приоткрыванием, and also a receiver разряжения and a socket.


The engine cold, the starting arrangement is included, springs push membranes in a direction of the case of the carburettor and influence a management shaft, the starting diaphragm is closed. During engine start разряжение in an inlet tube influences membrane М1 which leans against membrane М2. Разряжение does not influence membrane М2 immediately because of use of the calibrated jet in pass between the chamber and a receiver. The starting diaphragm is slightly opened, but in such degree that enrichment immediately increases. Разряжение reaches the second chamber and works a receiver, the spring is compressed by a membrane, the shaft of management of a starting diaphragm can move till the end of the course, and the starting diaphragm opens completely.

Connection of the second chamber and the pipeline разряжения in cars with an automatic transmission
1 – a calibrated jet,

2 – the returnable valve

In cars with an automatic transmission the external chamber is connected to a support of the carburettor by means of the valve of delay and the calibrated jet.