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Warm Dr17 - Propane Rpm

  1. Turn off all lights and accessories. Connect a tachometer to engine. Disconnect radiator cooling fan, and warm engine to normal operating temperature. Turn engine off. Disconnect the battery negative cable for 3 seconds and then reconnect it. Disconnect the oxygen sensor connector, and restart the engine.
  2. Run engine for more than 2 minutes. Remove fresh air duct from air cleaner. Insert propane hose 4 inches into the air cleaner snorkel. Open propane main valve. Meter propane until maximum RPM is reached.
  3. Engine speed should increase by 40-90 RPM. If such increase occurs, proceed to WARM DR18 for engines equipped with oxygen feedback system or to WARM DR20 for engines not equipped with oxygen feedback system. If engine speed increase is not within proper range, adjust by proper propane assisted idle set procedures.
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