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6.1.11.3.7. Productivity of the accelerating pump

PERFORMANCE ORDER
1. Remove the air filter, then start the engine for several seconds, then switch off it. Looking from above in the carburetor, open manually a butterfly valve. When opening a butterfly valve the double stream of fuel given from a spray of the accelerating pump has to be observed. In the absence of a stream of fuel execute check as follows.
2. When checking operability of the accelerating pump it is necessary to give to the float-operated camera fuel from the additional tank.
3. Mount primary camera of the carburetor over a volumetric glass. Completely open ten times and close a butterfly valve, and you make opening of the gate within 1 second then return the gate to a starting position and in 3 seconds repeatedly open it. Check that the cam of the accelerated turns of idling did not limit movement of a butterfly valve.
4. Measure amount of fuel which the accelerating pump gave to a volumetric glass, and compare these data with provided in subsection 6.1.1.
5. If adjustment is required, weaken the screw of fastening and turn a cam in the required direction then tighten the screw and repeatedly check productivity of the accelerating pump.
6. For adjustment weaken the screw (under an arrow) and turn a cam plate in the required direction.