Recommended Engine Speeds and Operating Procedures

LV9542-UN-04AUG04

A - Tachometer

B - 1700 rpm Mark (540E)

C - 2400 rpm Mark (540)

Tachometer (A) shows engine rpm, read in hundreds.

Warming Up Engine

Do not place tractor under full load until it is properly warmed up.

1. Idle engine at 1200—1500 rpm for several minutes.

2. Run engine at about 1900 rpm and under light load until engine reaches normal operation condition.

   NOTE: If hydraulic functions operate slowly, warm the transmission-hydraulic system oil.

Avoid Idling Engine

Allowing engine to idle at low rpm uses fuel inefficiently, and can cause a buildup of carbon in the engine.

If tractor must be left with the engine running more than three or four minutes, minimum engine speed should be 1200 rpm.

Observe Engine Work and Idle Speeds

Slow idle speed should be 850 ± 50 rpm. At light or no load, full throttle speed will increase to 2600 +50/-25 rpm.

Normal working speed is 1600—2400 rpm rated speed. Within these limits engine can be put under full load.

NOTE: With PTO shift lever in 540E position, engine fast idle speed is limited to 1700 rpm.

For correct PTO speed, run engine at:

• Economical 540E PTO (B) operation (lighter load): Increase engine speed until tachometer needle is aligned with 1700 rpm mark (B).
• Standard 540 rpm PTO (C) operation (load requiring full engine power): Increase engine speed until tachometer needle is aligned with 2400 rpm mark (C).

Restarting Stalled Engine

Should the engine stall when operating under load, depress clutch and restart it immediately to prevent abnormal heat buildup and continue with normal operation, or operate at slow idle for one or two minutes before stopping.