Introduction
Safety
Controls
Operating
Replacement Parts
Service Machine Safely
Service Interval Chart
Service Engine
Engine Warranty Maintenance Statement
Changing Engine Oil and Filter
Cleaning Engine Oil Cooling Fins
Checking and Cleaning Precleaner and Air Cleaner Element
Service Transmission
Service Steering and Brakes
Service Electrical
Service Miscellaneous
Troubleshooting
Storage
Assembly
Specifications
Warranty
John Deere Service Literature
John Deere Quality Statement
Copyright© Deere & Company
Service Engine
Engine Warranty Maintenance Statement
Maintenance, repair, or replacement of the emission control devices and systems on this engine, which are being done at the customers expense, may be performed by any nonroad engine repair establishment or individual. Warranty repairs must be performed by an authorized John Deere dealer.
Adjusting Carburetor
NOTE: The carburetor is calibrated by the engine manufacturer and should not require any adjustments.
If engine is operated at altitudes above 1829 m (6,000 ft.), some carburetors may require a special high altitude main jet. See your John Deere dealer.
Possible engine surging will occur at high rpm when the transmission is in neutral ("N") and the PTO switch is in the OFF position. This is a normal condition due to the emission control system.
If engine is hard to start or runs rough, check the TROUBLESHOOTING section of this manual.
After performing the checks in the troubleshooting section and your engine is still not performing correctly, contact your John Deere dealer.
Avoid Fumes
c CAUTION: Avoid injury! Engine exhaust fumes can cause sickness or death:
- If it is necessary to run an engine in an enclosed area, use an exhaust pipe extension to remove the fumes. |
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:
· TORQ-GARD SUPREME® (SAE 5W-30)
The following John Deere oils are also recommended, based on their specified temperature range:
Other oils may be used if above John Deere oils are not available, provided they meet one of the following specifications:
· SAE 10W-40-API Service Classification SG or higher
· SAE 5W-30-API Service Classification SG or higher
· SAE 10W-30-API Service Classification SG or higher
· SAE 30-API Service Classification SC or higher
Check Engine Oil Level
1. Park mower on a level surface. Stop engine. Allow engine to cool.
2. Lift and secure cowling in the open position.
3. Clean area around dipstick prior to removing it.
4. Remove dipstick (A). Wipe it clean.
6. Remove dipstick. Check oil level on dipstick; oil level should be between ADD and FULL (B).
· If oil is low, add oil to bring oil level no higher than the FULL mark on dipstick. (See Engine Oil in this section for correct oil.)
· If oil level is above the FULL mark, drain to proper level.
IMPORTANT: Avoid damage! To prevent extensive engine wear or damage, always maintain the proper engine oil level. Never operate the engine with the oil level below the add mark or over the full mark. |
7. Install dipstick. Lower the cowling.
Changing Engine Oil and Filter
2. Park front mower on a hard, level surface.
3. Engage the park brake. Stop the engine.
4. Lift and secure cowling in the open position.
· Put container under drain tube.
· Loosen and remove drain plug (A).
· Allow oil to drain into an oil drain pan.
· After oil drains, install and tighten drain plug.
6. Remove oil filter (B). Turn filter left to remove.
7. Apply a film of clean engine oil on gasket of new filter.
8. Install filter. Turn filter right until gasket makes contact with mounting surface. Tighten 1/2 to 3/4 turn after gasket contact.
9. Clean area around the oil fill cap (C) and oil dipstick (D).
10. Unscrew and remove the oil fill cap. Add approximately 2.2 L (2.3 qt.) of oil. Add approximately 0.24 L (1/2 pt) of oil for the filter capacity. (See Engine Oil in this section for correct oil application.)
11. Install and tighten oil fill cap.
12. Start engine and run at slow throttle for approximately two minutes. Check for leaks around filter and drain plug.
· Remove and wipe oil dipstick clean with a rag.
· Remove dipstick. Oil level should be between ADD and FULL (E).
Checking Spark Plugs
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c CAUTION: Avoid injury! Before you remove the spark plug, STOP the engine and let it cool.
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1. Stop engine and engage park brake.
2. Lift and secure cowling in the open position.
3. Clean area around both spark plugs.
4. Disconnect the spark plug wire (A) from each plug.
5. Remove and inspect spark plugs:
· Clean each plug and check for damage, replace if necessary.
· If plugs are in good condition, check gap.
6. Check and adjust spark plug gap (B) to 0.76 mm (0.030 in.).
7. Install spark plugs and tighten to 24.4-29.8 N·m (18-22 ft.-lb.).
8. Install both spark plug wires.
Cleaning Engine Oil Cooling Fins
1. Stop engine and engage park brake.
2. Lift and secure cowling in the open position.
3. Clean engine oil cooling fins (A) with a rag, brush, or compressed air.
Cleaning Engine Cooling Fins
1. Stop engine and engage park brake.
2. Lift and secure cowling in the open position.
3. Remove cap screws (A) and front clean out plates (B) from each side of engine.
4. Remove spark plug wire (C) from each engine spark plug.
5. With compressed air, thoroughly clean grass buildup and debris from the following areas:
· Head cooling passage behind each front cleanout plate (B).
· Area (D) behind each spark plug access hole.
· Area (E) between the rear of the engine and the heat shield on each side of the engine.
6. Install front clean out plates.
Cleaning Air Intake Screen
1. Stop engine and engage park brake.
2. Lift and secure cowling in the open position.
3. Clean engine screen (A) with a rag, brush or compressed air.
Checking and Cleaning Precleaner and Air Cleaner Element
NOTE: It may be necessary to check the air filter more frequently if operating vehicle in dusty conditions.
1. Stop engine and engage park brake.
2. Lift and secure cowling in the open position.
3. Loosen air cleaner cover retaining knob (A) and remove the cover (B).
4. Inspect foam precleaner (C) without removing.
NOTE: DO NOT wash paper element.
5. If foam precleaner is dirty, carefully remove from filter, leaving paper element (D) in the air cleaner housing:
· Wash foam precleaner in a solution of warm water and liquid detergent. Squeeze out excess water in a dry cloth until precleaner is completely dry. (DO NOT wring.)
· Put approximately 30 ml. (1 oz.) of clean engine oil onto precleaner. Squeeze precleaner to distribute oil evenly. Squeeze out excess oil with a clean cloth.
6. Inspect and replace paper filter element (D) ONLY if damaged or very dirty.
7. Remove element cover wing nut (F) and cover (E) and remove paper element.
8. Install cleaned foam precleaner and NEW paper element.
9. Install element cover and wing nut.
10. Install air cleaner cover and retaining knob.
Replace Fuel Filter
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c CAUTION: Avoid injury! To avoid injury, keep cigarettes, sparks, and flames away from the fuel system. Make sure engine is cool to the touch.
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IMPORTANT: Avoid damage! When installing a new fuel filter, the filter arrow (A) must be pointed in the direction of the fuel flow. |
1. Park front mower on a level surface.
2. Stop engine and engage park brake. Allow engine to cool.
3. Lift and secure cowling in the open position.
4. Turn fuel shut-off valve (B) to the CLOSED (OFF) position. (See Using Fuel Shut-Off Valve in the Operating Machine section.)
Picture Note: Fuel shut-off valve shown in the closed position.
5. Slide hose clamps (C) away from filter (D).
6. Place a drain pan under hoses to catch any fuel that may be left in the hoses.
7. Disconnect hoses from filter.
8. Install new filter. Be sure filter is installed with arrow (A) pointing in direction of fuel flow.
9. Connect hoses to new filter.
11. Turn fuel shut-off valve (B) to the OPEN (ON) position. (See Using Fuel Shut-Off Valve in the Operating Machine section.)