AC3 Series of Engines
40
7. Clean the metering orifice with carburetor cleaner.
8. Set the needle valve lever as per the carburetor
manufacturer’s recommendations using a W-tool.
See Figure 5.29.
9. Follow steps in reverse order to rebuild the carbure-
tor.
10. Perform a needle valve pop off test by following the
carburetor manufacturer’s recommendations.
11. Install the carburetor on the engine.
12. Test run the engine before returning it to service.
Figure 5.28
Orifice from the
pump side
! CAUTION! CAUTION
Do not insert anything into the
orifice to clean it. That will dam-
age the orifice resulting in the
carburetor being unrepairable. See Figure
5.28.
Figure 5.29
Needle valve lever
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