793C Off-Highway Truck Caterpillar

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Diesel engine exhaust contains products of combustion which may be harmful to your health. Always start and operate the engine in a well ventilated area and, if in an enclosed area, vent the exhaust to the outside.

The machine will not start unless the following conditions exist:

• The transmission control lever is in the NEUTRAL position.

• The engine speed is 0 rpm.

• The prelubrication of the engine is complete or the prelubrication system is turned OFF.

1. Adjust the operator's seat. Adjust the mirrors.

2. Fasten the seat belt.
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   Do not allow a companion to ride on the machine unless the companion is seated within the Rollover Protective Structure (ROPS) with the seat belt fastened. The companion must have the seat belt fastened while the machine is in operation. Personal injury or death may occur if the companion is not restrained and protected.

   Note: Before you start the engine, wait for the self test of the VIMS. The self test will activate when the engine start switch is turned to the ON position. See Operation and Maintenance Manual, "Vital Information Management System (VIMS) Self-Test" in this section for further information.

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   Illustration 1	g00289933

3. Move transmission control (1) to the NEUTRAL position.

4. Engage parking brake (2).
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   Illustration 2	g00591761

5. The dump body should be down and the hoist control should be in FLOAT position (3).

6. Make sure that no one is on the machine, underneath the machine or around the machine. Make sure that there are no personnel in the area.

7. Sound the horn.
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   NOTICE
   Excessive ether (starting fluid) can cause piston and ring damage. Use ether for cold weather starting purposes only.

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   Illustration 3	g00656594

8. Leave ether starting aid switch (4) in the AUTO position. Turn the engine start switch to START position (5).

   Only use the manual ether injection for cold weather starting.

9. Release the engine start switch when the engine starts.

Note: For starting below −18°C (0°F), use of additional cold weather starting aids is recommended. A coolant heater, a fuel heater or some extra battery capacity may be required. At temperatures below −23°C (−10°F), consult your Caterpillar dealer or refer to the Operation and Maintenance Manual, SEBU5898, "Cold Weather Recommendations".