Starting the Engine

Key Switch Operation

Accessory Position (A)-Push key in and turn to Accessory position for accessory operation.

Stop Position (B)-Turn key to Stop position from accessory or run positions to stop engine or disable accessories.

Run Position (C)-After turning key to Start position and releasing key, key returns to Run position. Run position enables run circuit allowing engine to run.

Start Position (D)-Turn key to Start position when starting engine. Key will return to Run position when released. See procedure below for proper starting procedure.

Press key in and hold for air intake heater operation. Refer to Cold Weather Starting procedure in this section.


A-Accessory Position
B-Stop Position
C-Run Position
D-Start Position

LV7199

Straddle Mount and Hi-Crop

LV7201

Cab Shown; IOOS Similar

OUO1043,0000E71 -19-05AUG03-1/4

TS177
LV5478

Hi-Crop and Straddle Mount
Starting Procedure

IMPORTANT: DO NOT use starting fluid. Tractor is equipped with intake air heater.

NOTE: If temperature is below 5°C (40°F), refer to Cold Weather Starting Procedure in this section.

1. Push hand throttle (A) forward off idle position (approximately 1/3 of full throttle). Engine may not start with throttle pulled completely down.


A-Hand Throttle
B-Key Switch ON

LV8420

IOOS Shown; Cab Similar

OUO1043,0000E71 -19-05AUG03-2/4

causym CAUTION: Avoid possible injury or death from a machine runaway.

Do not start engine by shorting across starter terminals. Machine will start in gear and move if normal circuitry is bypassed.

Before starting engine, ensure transmission shift lever is in Park or Neutral and range lever is in Neutral.

Start engine only from operator's seat.

NEVER start engine while standing on ground.

IMPORTANT: DO NOT run a cold engine at full throttle. Idle engine at 1200 rpm until engine has warmed.

2. Depress clutch pedal and turn key switch fully clockwise (B) to engage starter. Release key when engine starts. If key is released before engine starts, wait until starter and engine stop turning before trying again.

IMPORTANT: DO NOT operate starter more than 20 seconds at a time. If engine does not start, wait at least two minutes for the starter motor to cool before trying again. If engine does not start in four attempts, refer to Troubleshooting section.

LV8465

Cab Shown; IOOS Similar

LV5478

Hi-Crop and Straddle Mount


A-Hand Throttle
B-Key Switch ON

OUO1043,0000E71 -19-05AUG03-3/4

Cold Weather Starting

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 (optional) intake air heater system. An electric heating element (A) warms the intake air.

1. Activate the intake air heater system by turning key (B) to the Run position. Push in and hold in key for 10 or 15 seconds for temperatures above 0°C (32°F). Push in and hold in key for 30 seconds when ambient temperature is below 0°C (32°F).

2. Depress clutch pedal and turn key clockwise (C) to start engine.

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

4. Idle engine at 1200 rpm until engine warms to operating temperature.

LV5471

5320 Shown

LV8454


A-Electric Heating Element
B-Key
C-Turning Key Switch in Clockwise Direction

OUO1043,0000E71 -19-05AUG03-4/4