Examination
Remove air filter (see section «Removal and installation of the air filter»).
Press the needle -1- of the idle speed correction air jet with a small screwdriver and, moving the air damper, check its ease of movement.
Check the resistance of the air damper regulator. To do this, disconnect the connector, connect an ohmmeter to both contacts of the air damper regulator and measure the resistance of the winding. Setpoint see table of main carburetor technical data.
Then measure the insulation resistance. To do this, connect an ohmmeter between the housing and the throttle control connector. Thus, measure the resistance by connecting an ohmmeter in series to both pins of the connector.
Install air filter (see section «Removal and installation of the air filter»).
Withdrawal
Remove air filter (see section «Removal and installation of the air filter»).
Unplug connector -3- for choke control.
Use a felt-tip pen to make a mark -4- on the mounting ring of the air damper regulator in order to subsequently install the regulator in its original position.
Loosen the 4 fixing ring screws (arrows) and remove the choke control -5-.
Detach choke shaft from lever and remove connecting rod -6-.
Check for ease of movement of the control lever by turning it through a full 320°angle.
Installation
Insert the air damper regulator with the fastening ring and tighten the screws slightly so that the regulator cannot turn.
Connect the connecting rod from above with the short end with the adjusting lever. Position the connecting rod so that the control lever points in the same direction as the lever -7- on the choke.
In this position, press the connecting rod into the lever on the choke.
Press the choke adjuster so that the notch on the edge of the retaining pin enters the slot in the carburetor body. In this position, check the possibility of full opening and closing of the air damper.
Tighten the fixing ring screws.
Connect connector.
Install air filter (see section «Removal and installation of the air filter»).