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Overload Protection Switch

With pressure tester, gauge, and dwell meter connected as in FULL LOAD ENRICHMENT SYSTEM test, pump tester up until engine stalls. Air pressure reading should be 10 psi (.70 kg/cm2 ). At same time, air pressure indicator on instrument panel should move to red zone and red "Turbo" warning light on instrument cluster should light. If not, replace overload protection switch.