Contents: Removal ↓ Installation ↓
1. Disconnect the wire blocks from the microswitch terminals (see "Carburetor - removal and installation").
2. Clean the microswitch from dirt and rinse it with white spirit.
3. Connect an ohmmeter to the switch terminals and measure the resistance.
When the primary throttle valve is closed, when the air valve is open and the switch is in the correct position (see "installation" below), its contacts are open. The resistance of a serviceable switch should tend to infinity. If the resistance is low, the switch is faulty or incorrectly installed.
4. Turn the throttle lever with your finger. If the switch is working correctly, its lever is pressed and the contacts close.
A working switch should have resistance that tends to zero.
Removal
A faulty microswitch can be replaced without removing the carburetor from the vehicle. For clarity, the work is shown on a removed carburetor.
The source is on the website: VAZBOOK.RU
1. Disconnect the wire blocks from the microswitch terminals (see "Carburetor - removal and installation").
2. Using a slotted screwdriver, unscrew the two screws securing the microswitch to the bracket and remove the microswitch.
Installation
We install the microswitch with the carburetor air damper open.
1. Install the switch on the bracket without tightening the screws. Turn the switch clockwise, thereby pressing its lever, until the switch operates. At the same time, its contacts will open. Holding the switch in this position, finally tighten the screws of its fastening.
2. Check the switch installation. When turning the throttle actuator lever B clockwise until its cutout stops in the antennae A, the microswitch should operate (characteristic click).
3. Connect the wire blocks to the microswitch terminals (in random order).