Cold Weather Operation

CAUTION:

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Handle Starting Fluid with Care

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Cold Weather Starting Guidelines

A - Minimum Cranking RPM

B - No Aids

C - Electric Air Heat

D - Block Heat

E - Ether (See Caution)

F - Electric Air Heat and Block Heat

G - Ether and Block Heat (See Caution)

DO NOT use starting fluid near fire, sparks, or flames. DO NOT incinerate or puncture a starting fluid container.

Engines may be equipped with intake air heaters, coolant heaters, fuel heaters, or ether injectors as cold weather starting aids. Later “475” 4-valve cylinder head engines are equipped with glow plugs as an automatic cold weather starting aid.

Starting aids are required below 0°C (32°F). They will enhance starting performance above these temperatures and may be needed to start applications that have high parasitic loads during cranking and/or start acceleration to idle.

Using correct grade of oil (per engine and machine operator's manual) is critical to achieving adequate cold weather cranking speed.

Synthetic oils have improved flow at low temperatures, especially in arctic conditions.

Other cold weather starting aids are required at temperatures below -30°C (-22°F) or at altitudes above 1500 m (5000 ft). (See “Using a Booster Battery or Charger” later in this section.)

1. Follow steps 1—4 as listed under STARTING THE ENGINE, earlier in this section, then proceed as follows according to the instrument (gauge) panel on your engine.

2. 275-Series Engines Without Air Intake Heaters: Manually activate ether injectors.

   NOTE: Air intake heaters (275 engines) and glow plugs (475 engines) operate automatically through the ECU. The Engine Preheater Indicator light on these engines, located above the key switch, should always illuminate when the switch is turned ON. In warm weather, the light illuminates briefly as a light check. In cold weather, the light remains on during the automatic operation of the air intake heater or glow plugs. Operating time depends on temperature. Do not crank engine until light turns off.

   275-Series Engines with Air Intake Heaters and 475-Series Engines with Glow Plugs: Turn key ON, but DO NOT crank engine until Engine Preheater Indicator light turns off.

3. Follow remaining steps 5—6 as listed under earlier in this section.

   Additional information on cold weather operation is available from your authorized servicing dealer.