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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

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



The following John Deere oils are preferred:

• TURF-GARD™

• PLUS- 4™

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

• API Service Classification SG or higher

Checking Engine Oil Level

IMPORTANT: Avoid damage! Failure to check the oil level regularly could lead to serious engine problems if oil level is low:

• Check oil level before operating.

• Check oil level when the engine is cold and not running.

• Keep level between the FULL and the ADD marks.

• Shut off engine before adding oil.


NOTE: Check oil twice a day if you run engine over 4 hours in a day.

Make sure engine is cold when checking engine oil level.

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

2. Let engine cool.

3. Raise hood.


MX20912

4. Remove dipstick (A). Wipe dipstick with a clean rag.

5. Install dipstick. Be sure dipstick is all the way down.

6. Remove dipstick.

7. Check oil level on dipstick. Oil level should be between crosshatch marks on dipstick.

IMPORTANT: Avoid damage! If oil level is at or below crosshatch marks, do not run engine.


8. If oil level is low, remove oil filler cap (B) or (C).

9. Add oil to bring oil level no higher than top of crosshatch mark on dipstick.

10. Install dipstick.

11. Install and tighten oil filler cap.

12. Lower hood.

Changing Engine Oil and Filter

IMPORTANT: Avoid damage! Change the oil more often if the vehicle is used in extreme conditions:

• Extremely dusty conditions.

• Frequent slow or low-speed operation.

• Frequent short trips.


1. Run engine a few minutes to warm oil.

2. Park machine safely. (See Parking Safely in the SAFETY Section.)

3. Raise hood.


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4. Put drain pan under drain plug (A).

5. Open drain plug.

6. Allow oil to drain completely.

7. Close drain plug.


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8. Clean dirt from around oil filter (B).

9. Position drain pan under filter.

10. Turn oil filter counterclockwise with a filter wrench to remove.

11. Put a light coat of clean engine oil on gasket of new filter.

12. Install replacement oil filter by turning oil filter clockwise until gasket contacts filter base. Tighten filter an additional one-half turn.


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13. Remove oil filler cap (C) or (D). Add approximately 2.1L (2.25 qt) of oil.

14. Install and tighten filler cap.

15. Start and run engine at idle to check for leaks.

16. Stop engine. Fix any leaks before operating.

17. Check engine oil level. Add or remove oil if necessary.

Cleaning Air Intake Screens

c CAUTION: Avoid injury! Compressed air can cause debris to fly a long distance.

• Clear work area of bystanders.

• Wear eye protection when using compressed air for cleaning purposes.

• Reduce compressed air pressure to 210 kPa (30 psi).

IMPORTANT: Avoid damage! An obstructed air intake screen can cause engine damage due to overheating. Keep air intake screen and other external surfaces of the engine, including cooling fins, clean at all times to allow adequate air intake.

Turn engine off before removing intake screens to avoid drawing debris into the radiator.


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

2. Raise hood.


MX13587a

3. Remove side panels (A).

4. Clean air intake screens on side panels using a brush, cloth or water.

5. Clean rear air intake screen (B) with a brush, cloth or compressed air. Blow compressed air back toward seat.

6. Install side panels.

7. Lower hood.

Checking Air Restriction Indicator

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

2. Raise hood.

NOTE: Indicator will not function correctly if plastic indicator housing is damaged.


MX13575

3. Locate and check air restriction indicator (A).

• If window (B) is clear, no air cleaner service is required.

• If window (B) shows fully red, air cleaner requires immediate service.

4. Service air cleaner elements if needed.

5. Push yellow reset button on top of air restriction indicator.

6. Lower hood.

Cleaning Air Cleaner Dust Unloading Valve

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


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

2. Remove hood.


MX21819

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

4. Install valve.

5. Install hood.

Servicing Air Cleaner Elements

IMPORTANT: Avoid damage! Dirt and debris can enter the engine when removing the air cleaner elements. Service elements only when red signal is in view in window of air restriction indicator with engine off.


Servicing Primary Air Cleaner Element:

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

2. Allow engine to cool.

3. Remove hood.


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4. Release latches (A) and remove air cleaner canister cover (B).


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5. Remove and discard primary element (C). Replace with new primary element.

6. Install air cleaner canister cover with rubber dust unloading valve pointing downward.

7. Check instruction molded into canister cover for proper installation.

8. Hook latches onto cover.


MX13575

9. Push reset button (D) on air restriction indicator.

10. Start engine. Allow engine to run approximately one minute at maximum throttle speed.

11. Stop engine.

12. Check air restriction indicator.

• If window (E) is clear, no air cleaner service is required.

• If window (E) shows fully red, secondary air cleaner element requires immediate service.

Servicing Secondary Air Cleaner Element:

1. Remove air cleaner canister cover.

2. Remove primary air cleaner element.


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MX21820

3. Remove and discard secondary air cleaner element (A). Replace with a new secondary air cleaner element.

4. Install primary air cleaner element.

5. Replace air cleaner canister cover.

6. Push reset button (B) on air restriction indicator.

7. Install hood.

Checking Air Cleaner Intake Hoses and Clamps

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

2. Allow engine to cool.

3. Remove hood.


MX20913

4. Check condition of upper (A) and lower (B) air intake hoses. Replace if needed.

5. Check to be sure hose clamps are tight and secure.

6. Install hood.

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.

Servicing Cooling System

Checking Coolant Level

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

2. Allow engine to cool.

3. Raise hood.


MX20914

4. Check recovery tank (A) coolant level:

• If engine is warm (into green range on coolant temperature gauge), coolant level should be between the top line (B) and the bottom line (C).

• If engine is cold, coolant level should be at the bottom line (C).

5. Remove recovery tank cap (D) if necessary to add coolant.

6. Add pre-diluted coolant or specified ratio of antifreeze and water.

7. Install and tighten recovery tank cap.

8. Lower hood.

Draining Cooling System

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

2. Allow engine to cool.

3. Raise hood.


MX13601

4. Slowly open radiator cap (A) to the first stop to release all pressure.

5. Remove radiator cap.


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6. Put drain pan under radiator petcock (B) located behind right side panel.

7. Open radiator petcock. Drain coolant into pan.

8. Close radiator petcock.

9. Flush or fill cooling system and install radiator cap.

Flushing Cooling System

NOTE: Cooling system capacity is 2.8L (3.0 qt).

1. Drain cooling system.

2. 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 can.

3. Install and tighten radiator cap.

4. Run engine until needle on coolant temperature gauge reaches the green range.

5. Stop engine.

6. Drain cooling system immediately before rust and dirt settle.

7. Remove recovery tank:


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• Hold tank (A) and remove screw (B).

• Pull overflow hose (C) from tank and remove tank.

8. Remove tank cap and clean tank.

9. Install tank.

10. Install overflow hose to bottom of tank. Be sure hose is not kinked.

Filling Cooling System

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.


NOTE: John Deere COOL-GARD coolant is recommended when adding coolant to the cooling system.

Follow the directions on the container for correct mixture ratio.

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

2. Allow radiator to cool.

3. Fill cooling system. Cooling system capacity is 2.8L (3.0 qt).

• Coolant should be level with lower ridge of radiator neck.

4. Install and tighten radiator cap.

5. Run engine until needle on coolant temperature gauge reaches the green range.

6. Stop engine.

7. Check recovery tank coolant level:

• Coolant level should be between the “H” line and the “L” line.

8. Remove cap from recovery tank to add coolant if necessary.

9. Lower hood.

Cleaning Radiator Screen and Fins

c CAUTION: Avoid injury! Compressed air can cause debris to fly a long distance.

• Clear work area of bystanders.

• Wear eye protection when using compressed air for cleaning purposes.

• Reduce compressed air pressure to 210 kPa (30 psi).

IMPORTANT: Avoid damage! High-pressure water or air can damage cooling fins or other engine components. Use water from a hose or reduce compressed air pressure to 210 kPa (30 psi).

Turn engine off before cleaning radiator screen and fins to avoid drawing debris into the radiator.


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

2. Raise hood.


MX13587a

3. Remove side panels (A).


MX20918

4. Grab handle (B) on screen on left side of machine, and pull screen out slightly to remove from behind tab (C). Remove screen.

5. Clean screen with a brush, compressed air or water from a hose.


MX21774

6. Turn fastener (D) on left side of machine to unlock position.

7. Carefully remove oil cooler (E) from radiator compartment.


MX21775

8. Clean oil cooler (E) with gentle hose spray or vacuum cleaner.

9. Clean cooling fins (F) on both sides of radiator.


MX21776

10. Install oil cooler. Check to be sure tab (G) extends through slot on right side of machine. Turn fastener on left side of machine to lock position.

11. Install screen.

12. Install side panels.

13. Lower hood.

Checking Radiator Hoses and Clamps

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

2. Raise hood.


MX20919

3. Check upper radiator hose (A) for damage or cracking. Replace if needed.

4. Tighten hose clamps (B) as needed.

5. Check lower radiator hose (C) for damage or cracking. Replace if needed.

6. Tighten hose clamps (D) as needed.

7. Lower hood.

Servicing Alternator Belt

c CAUTION: Avoid injury! Rotating parts can catch fingers, loose clothing, or long hair. Wait for engine and all moving parts to stop before leaving operator’s station to adjust or service machine.

Checking Belt Tension

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

2. Allow engine to cool.

3. Raise hood.


MX13612

4. Apply moderate thumb pressure to belt (A) halfway between pulleys. Belt should deflect inward approximately 13mm (1/2 in.).

5. Adjust belt tension if deflection is more or less than specified.

Adjusting Belt Tension


MX13613

1. Loosen adjusting bolt (B).

2. Loosen alternator bolts (C).

3. Push alternator up to loosen belt, and down to tighten belt.

4. Tighten bolts.

5. Check belt tension.

6. Lower hood.

Replacing Belt

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

2. Allow engine to cool.

3. Raise hood.

4. Loosen adjusting bolt (B).

5. Loosen alternator bolts (C).

6. Push alternator up to loosen belt.

NOTE: Rotate driveshaft for access to bolts, if necessary.


MX13614

7. Remove three cap screws (D) to disconnect drive shaft from engine sheave.

8. Remove belt from engine sheave, and alternator and fan pulleys. Pull belt over fan.

9. Install new belt loosely around sheave and pulleys.

10. Install driveshaft. Tighten three cap screws to 40 N•m (30 lb-ft).

11. Check belt tension. Adjust as needed.

12. Lower hood.

Checking Fuel Filter Sediment Bowl

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

2. Allow engine to cool.

3. Raise hood.

NOTE: Red ring in bottom of sediment bowl will float on water. If ring is floating, sediment bowl should be cleaned.


MX20909

4. Check for water and deposits in bottom of sediment bowl (A).

5. Clean sediment bowl and replace fuel filter if needed.

6. Lower hood.

Cleaning Fuel Filter Sediment Bowl and Replacing Filter

c CAUTION: Avoid injury! Fuel vapors are explosive and flammable:

• Do not smoke while handling fuel.

• Keep fuel away from flames or sparks.

• Shut off engine before servicing.

• Cool engine before servicing.

• Work in a well-ventilated area.

• Clean up spilled fuel immediately.

NOTE: Change filter when fuel is low.

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

2. Allow engine to cool.

3. Raise hood.


MX20909

Picture Note: Fuel shut-off valve shown in open position

4. Close fuel shut-off valve (A).

5. Put drain pan under fuel filter sediment bowl to catch fuel spillage.

6. Turn locking collar (B) counterclockwise to remove bowl (C).

7. Remove and discard fuel filter.

8. Remove and retain plastic ring and spring from sediment bowl.

9. Clean bowl, plastic ring and spring.

10. Install plastic ring and spring in original position in sediment bowl.

11. Install new filter on filter head.

12. Position sediment bowl and locking collar. Tighten locking collar to filter head.

13. Open fuel shut-off valve.

14. Lower hood.

15. Start machine and check for leaks.

Adjusting Fuel Injection Pump

NOTE: The fuel injection pump is calibrated by the engine manufacturer and should not require any adjustments.

If engine is hard to start, lacks power, or runs rough, check the TROUBLESHOOTING section of this manual.

After performing the checks in the troubleshooting section, if your engine is still not performing correctly, contact your John Deere dealer.