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

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

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.

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.

5225 and 5325: Slow idle speed should be 900 ±50 rpm. At light or no load, full throttle speed will increase to 2625 ±50 rpm.

5425, 5525 and 5625: Slow idle speed should be 825 ±25 rpm. At light or no load, full throttle speed will increase to 2625 ±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 or 1000 rpm (if equipped) PTO (C) operation (load requiring full engine power): Increase engine speed until tachometer needle is aligned with 2400 rpm mark (C).

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.

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