Examination
Remove carburetor.
Note: The workshop can test the performance of the accelerator pump using a special tool without removing the carburetor.
Turn the stepped washer -1- so that it no longer touches the screw -2- for adjusting the idle speed of the cold engine. Secure the stepped washer in this position.
Substitute a suitable funnel and volumetric tube under the carburetor,
Throttle lever 5 times in a row to put it in the position of its full opening (make 1 move in about a second). Before each next move, pause for about 3 seconds.
Attention: The float chamber must be filled with fuel, otherwise fuel will not flow.
Determine the amount of injected fuel, divide by 5 and compare with the prescribed value, see below.
Adjustment
If necessary, adjust the performance of the accelerator pump. To do this, loosen the locking screw -1- and turn the eccentric -2-.
+ = performance increase
- = reduce performance.
Install carburetor.
Adjust the engine shaft speed when the engine is idling and the CO content in the exhaust gases.
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