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Service Engine


Avoid Fumes

c CAUTION: Avoid injury! Engine exhaust fumes contain carbon monoxide and can cause serious illness or death.

Move the machine to an outside area before running the engine.

Do not run an engine in an enclosed area without adequate ventilation.

• Connect a pipe extension to the engine exhaust pipe to direct the exhaust fumes out of the area.

• Allow fresh outside air into the work area to clear the exhaust fumes out.

Engine Oil - Diesel Model

Use oil viscosity based on the expected air temperature range during the period between oil changes.

The following John Deere oils are preferred:



• PLUS-50® (SAE 15W-40)

• TORQ-GARD SUPREME® (SAE 30)

• TORQ-GARD SUPREME® (SAE 5W-30)

• PLUS-4®

Other oils may be used if above John Deere oils are not available, provided they meet one of the following specifications:

• SAE 15W-40 - API Service Classification CF-4 or higher.

• SAE 5W-30 - API Service Classification CC or higher.

• SAE 10W-30 - API Service Classification CF or higher.

• SAE 30 - API Service Classification CF or higher.

Checking Engine Oil Level

1. Park the machine safely. (See Parking Safely in the SAFETY section.)

2. Stop the engine.

3. Check engine oil when oil is cold.

4. Lift the hood. (See Raising Hood in Service-Miscellaneous section)

5. Remove plenum.


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6. Clean around dipstick. Remove dipstick (A).

7. Install dipstick in tube.

8. Remove dipstick. Check oil level on dipstick.

9. Oil must be between Add and Full marks.

10. If oil level is low, add oil to bring oil level no higher than full mark on dipstick. (See Engine Oil in this section for correct oil.)

11. Install the dipstick. Lower the hood.

12. If oil level is above full mark, drain to the proper level. Determine cause of over-full condition and correct.

Changing Engine Oil and Filter

1. Run engine to warm the oil.

2. Park mower on level surface and lower cutting units.

3. Stop the engine. Lock the park brake and remove the key.


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4. Remove drain plug (A) to drain oil.


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5. Remove oil filter (B) (not shown). Turn filter to the left counterclockwise to remove.

6. Apply a film of clean engine oil on seal of new filter.

7. Install filter. Turn filter until seal contacts mounting surface. Tighten 1/2–3/4 turn after gasket contact.

8. Install drain plug.

9. Remove filler cap (C). Add approximately 2.4 L (2.5 qt.) of oil. (See Engine Oil in this section for correct oil.)

10. Remove the dipstick (D) to check oil level.

11. Install and tighten the filler cap.

12. Run engine at slow speed 2 minutes. Check for leaks around filter.

13. Stop the engine and wait a couple of minutes. Check oil level. Add oil only to full mark on dipstick.

14. Install the dipstick.

Cleaning Plenum Air Intake Screens

1. Park the machine safely. (See Parking Safely in the SAFETY section.)

2. Raise the hood.


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3. Remove plenum (A) by lifting up and away from engine.

4. Clean plenum air intake screens (B) (top and sides) with brush or compressed air.

Checking Air Restriction Indicator

1. Park the machine safely. (See Parking Safely in the SAFETY section.)

2. Raise hood.


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3. Remove plenum (A).

NOTE: Indicator will not signal correctly if indicator case is cracked or broken.


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4. Check air restriction indicator: When yellow plunger (B) inside indicator shows in clear window, air cleaner requires immediate service.

5. Install plenum.

6. Lower the hood.

Replacing Air Cleaner Element

1. Park the machine safely. (See Parking Safely in the SAFETY section.)

2. Lift the hood.

3. Remove plenum.


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4. Unclip and remove air cleaner canister cover (A).


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5. Remove and discard old primary element (B).

IMPORTANT: Avoid damage! Do not clean secondary element. Replace secondary element only:

• Every third primary element change.

• Every two years.

• When air restriction indicator shows yellow in the window, after replacing the primary element.



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6. Remove and discard if necessary the secondary element (C).


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7. Depress and release reset button (D) on bottom to reset air restriction indicator.


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8. Install secondary element (E). Push on securely.


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9. Install new primary element (F), push on securely.


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10. Install cover and engage latches (G).

11. Install plenum

12. Lower hood.

Clean Rubber Dust Unloading Valve

IMPORTANT: Avoid damage! Prevent damage to the engine. Never operate engine without air cleaner elements and rubber dust unloading valve installed.



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Remove rubber dust unloading valve (A) and clean. Replace if damaged.

Service Cooling System Safely


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c CAUTION: Avoid injury! The radiator will be hot and can burn skin. Built-up pressure may cause explosive release of coolant when the radiator cap is removed:

• Shut off the engine and allow to cool.

• Do not remove the cap unless the radiator and the engine are cool enough to touch with bare hands.

• Slowly loosen the cap to the first stop to release all pressure. Then remove the cap.

Recommended Engine Coolant

IMPORTANT: Avoid damage! Using incorrect coolant mixture can damage the radiator:

• Do not operate engine with plain water.

• Use ethylene-glycol based antifreeze approved for use in aluminum radiators or aluminum engines.

• Do not exceed a 50% mixture of coolant and water.

• Do not pour coolant or water into the radiator when the engine is hot.


The following John Deere coolants are preferred:

• COOL-GARD® PRE-DILUTED SUMMER COOLANT (TY16036).

• COOL-GARD® CONCENTRATED SUMMER COOLANT (TY16034).

If neither of the recommended coolants is available, use a glycol base coolant that meets the following specification:

• ASTM D4985 (JDM H24A2).

Check container label before using to be sure it has the appropriate specifications for your machine. Use coolant with conditioner or add conditioner to coolant before using.

If using concentrate, mix approximately 50 percent antifreeze with 50 percent distilled or deionized water before adding to cooling system. This mixture will provide freeze protection to -37 degrees C (-34 degrees F).

Certain geographical areas may require lower temperature protection. See the label on your antifreeze container or consult your John Deere dealer to obtain the latest information and recommendations. Never exceed the maximum dilution rate for the coolant you are using. Exceeding the maximum rate will greatly reduce the coolant effectiveness.

Checking Coolant Level

IMPORTANT: Avoid damage! To prevent engine damage:

• Do not operate engine without coolant.

• Do not pour coolant into the radiator when the engine is hot.

To prevent engine overheating:

• Never exceed more then 50 percent antifreeze in cooling system.

Cooling system capacity: 4.15 L (4.25 qt.) plus 532 ml (18 oz.) in the overflow tank.


1. Lift hood.

2. Check coolant level:


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• If engine is warm, coolant should be between lines (A) and (B) on coolant tank.


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3. Remove cap (C) to add coolant.

4. If coolant is low, add ethylene glycol (without stop-leak additive) antifreeze and water in the ratio specified on the antifreeze container.

5. Install and tighten recovery tank cap.

6. Clean debris from air intake screen and radiator.

7. Check condition of hoses. Check for leaks or loose connections.

Draining Cooling System

1. Stop the engine and let it cool.

2. Raise the hood.


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3. Slowly remove radiator cap (A).


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4. Open radiator petcock (B). Drain coolant into a bucket.

5. After all coolant has drained, close radiator petcock.

6. Flush cooling system.

Flushing Cooling System

c CAUTION: Avoid injury! The radiator will be hot and can burn skin. Built-up pressure may cause explosive release of coolant when the radiator cap is removed:

• Shut off the engine and allow to cool.

• Do not remove the cap unless the radiator and the engine are cool enough to touch with bare hands.

• Slowly loosen the cap to the first stop to release all pressure. Then remove the cap.

IMPORTANT: Avoid damage!

• Do not flush the cooling system when the engine is hot.

• Do not operate engine without coolant.


1. Fill cooling system with clean water and John Deere Cooling System Cleaner, or John Deere Cooling System Quick Flush or an equivalent. Follow directions on the can.


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2. Install and tighten radiator cap (A).

3. Start and run engine until it reaches operating temperature. Stop engine.


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4. Open radiator petcock (B) and drain the cooling system immediately before rust and dirt settle.

5. Close radiator petcock.

Filling Cooling System

IMPORTANT: Avoid damage! To prevent engine damage from improper cooling:

• Do not use straight antifreeze or more than 50% antifreeze in the cooling system.

• Do not mix or add any other type additives to the cooling system.

Cooling system capacity: 4.15 L (4.25 qt.)


1. Fill cooling system. For cold weather, use a solution of only ethylene glycol antifreeze (without a stop-leak additive) and clean, soft water. A chart on the antifreeze container tells how much antifreeze to use for the freeze protection needed in your area.

John Deere Cooling System Sealer or its equivalent may be added to the radiator to seal leaks. Do not use any other additives in the cooling system.

2. Install and tighten radiator cap.

3. Run engine until it reaches operating temperature.

4. Stop the engine.


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5. After the engine cools, check coolant level in recovery tank (A). Level should be up to H mark (B) on tank when engine is hot or L mark (C) on tank when engine is cold.

6. Remove cap (D) to add coolant if necessary.

7. Check condition of coolant system hoses. Install new hoses periodically. Tighten hose clamps regularly.

Checking Sediment Bowl

1. Stop the engine. Raise the hood.


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2. Check for water in sediment bowl (A): Orange ring will float on top of the water.

3. If necessary, clean bowl and replace filer.

Cleaning Fuel Filter Sediment Bowl

1. Raise the hood.


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2. Turn collar (A) to remove bowl and filter. Discard the filter.

3. Clean the bowl.

4. Install new filter and bowl.

5. Tighten collar.

6. Lower the hood.

Bleeding Fuel System

IMPORTANT: Avoid damage! Modification or alteration of injection pump, pump timing, or fuel injectors in a manner not recommended by the manufacturers will terminate the warranty obligation to the purchaser.


1. Stop the engine.


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2. Loosen bleed screws (A) and (B).


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3. Pump lever (C) until fuel flows from around screws.

4. Tighten screws when fuel flows free of bubbles.

5. Start the engine.


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6. If engine does not run smoothly, loosen three fuel line fittings (D) one at a time.

7. Tighten fittings when fuel flows free of bubbles.