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Cold Mixture Heater & Fuel Heater

NOTE: Fuel heater is not equipped on all models.
  1. To measure resistance of CMH, unplug wiring connector. Using an ohmmeter, measure resistance between terminals. Resistance at 68°F (20°C) should be .5-2.2 ohms.
  2. To measure resistance of fuel heater, unplug wiring connector. Using an ohmmeter, measure resistance between terminal and float bowl. See Fig 1. Resistance at 68°F (20°C) should be 2-6 ohms.
Fig 1: Checking Resistance of Fuel Heater
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