Cold Weather Starting Procedure Using Intake Air Heater System-If Equipped

causym CAUTION: DO NOT use starting fluid in tractor equipped with an intake air heater system. (See your John Deere dealer for a complete list of other starting aids available.)

Tractors are equipped with an intake air heater system. An electric heating element (A) warms intake air.

1. Activate the intake air heater system by turning key (B) to the RUN position. Hold the key in for 10 or 15 seconds for temperatures below 18°C (64°F). Hold key in for 30 seconds when ambient temperature is below 0°C (32°F).

2. Depress clutch pedal and turn key switch clockwise to start engine.

3. If engine runs rough, activate the intake air heater system by pushing in and holding key switch (B) until engine runs smooth.


A-Electric Heating Element
B-Key Switch

LV4940

5320N

LV4941

5420N and 5520N

LV4939

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