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Vacuum Switch F

  1. Disconnect vacuum hose to vacuum switch F and connect a hand vacuum pump to hose. Apply vacuum to switch. Check for voltage at Brown/Black wire (1500 HF Calif.) or Brown wire (1500 Calif.) of vacuum switch F.
  2. Voltage should be available when vacuum below 8 in. Hg (1500 HF Calif.) is applied. If there is no voltage, replace vacuum switch F and retest.
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