Recommended Engine Speeds and Operational Procedures

Warm 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 operating condition.

NOTE: If engine is hard to start during cold weather, operate cold weather start aid, if equipped. (Refer to Cold Weather Start Aid-If Equipped, in this section.)

NOTE: If hydraulic functions operate slowly, warm the transmission-hydraulic system oil. (See Warm Transmission-Hydraulic System Oil, in Section 70.)

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 3 or 4 minutes, minimum engine speed should be 1200 rpm.

Observe engine work and idle speeds

1. Low idle speed:

  • 850 ±50 rpm

2. Full throttle speed, at light or no load:

  • 2375 ±50 rpm

3. Engine (not vehicle) nominal full load speed:

  • 1600-2200 rpm
PULV002238


A-Tachometer
B-1645 rpm mark (540E)
C-2100 rpm mark (Standard 540)

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NOTE: Implement overspeed occurs if:

If Engine rpm Exceeds

1645 rpm

For 540E PTO

2100 rpm

For 540 PTO

 

With PTO speed shift lever in 540E position engine high idle is limited to 1815 rpm.

4. Engine speed at PTO operation:

  • For economy 540E PTO operations (light PTO implement load), run engine at 1645 rpm (B).
  • For standard 540 PTO operations (PTO load demands full engine power), run engine at 2100 rpm (C).

Restart stalled engine

If engine stops running due to overload, immediately restart engine. A running engine causes oil and coolant to circulate, which prevents abnormal heat buildup. If engine stalls, but does not stop running due to overload, run at low idle for one or 2 minutes in order to dissipate heat buildup.

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