John Deere

OMM124509

Issue A9

F925 and F935 Front Mower

F925 Serial No. (150001 - )

F935 Serial No. (150001 - )

Introduction

Safety Signs

Controls

Operating

Lawn Care

Replacement Parts

Service Machine Safely

Service Intervals

Service Engine

Service Transmission

Anti-Chatter Transmission Oil

Transmission and Hydraulic Oil

Grease

Alternative And Synthetic Lubricants

Checking Transmission Oil Level

Changing Transmission Oil

Changing Transmission Oil Filter

Adjusting Transmission Neutral

Lubricate PTO Shaft Bearing

Service Steering & Brakes

Service Electrical

Service Miscellaneous

Troubleshooting

Storing Vehicle

Assembly

Specifications

Warranty

John Deere Quality Statement

CopyrightŠ Deere & Company

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Service Transmission


Anti-Chatter Transmission Oil

NOTE: Tractor is filled with John Deere Low Viscosity
HY-GARDŽ (J20D) transmission oil at the factory. DO NOT mix oils.

These tractors are equipped with a hydraulic wet disc clutch transmission. To avoid chatter, use only Low Viscosity
HY-GARDŽ (J20D) transmission oil. DO NOT use type "F" automatic transmission fluid.

John Deere Low Viscosity HY-GARDŽ (J20D) transmission oil is specially formulated to minimize clutch chatter, and to provide maximum protection against mechanical wear, corrosion, and foaming.

IMPORTANT: Avoid damage! When operating in temperatures below
-7°C (20°F), you must use Low Viscosity HY-GARDŽ or transmission damage will occur.


Transmission and Hydraulic Oil


MIF

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

John Deere HY-GARDŽ is recommended.

Other oils may be used if they meet the following:

John Deere Standard JDM J20C.

Grease

Use grease based on the expected air temperature range during the service interval.


TS1417

The following greases are preferred:

ˇ John Deere MOLY HIGH TEMPERATURE EP GREASE

ˇ John Deere HIGH TEMPERATURE EP GREASE

ˇ John Deere GREASE-GARD

Other greases may be used if they meet one of the following:

ˇ SAE Multipurpose EP Grease with a maximum of 5% molybdenum disulfide

ˇ SAE Multipurpose EP Grease

Greases meeting Military Specification MIL-G-10924F may be used as arctic grease.

Alternative And Synthetic Lubricants

Conditions in certain geographical areas may require lubricant recommendations different from those printed in this operator's manual. Some John Deere lubricants may not be available in your location. Consult your John Deere dealer to obtain information and recommendations.

Synthetic lubricants may be used if they meet the performance requirements as shown in this operator's manual.

Checking Transmission Oil Level

IMPORTANT: Avoid damage! Check oil level before machine has been run or when oil is cold.


1. Park Front Mower on a level surface.

NOTE: Sight tube is located under left floor panel and viewed from under the front of the machine.


M78405c

2. Oil must be in center of sight
tube (A).

IMPORTANT: Avoid damage! DO NOT FILL OVERFLOW CONTAINER. Add oil as necessary to the sight tube level.



M78405a

3. If oil is low, lift seat. Remove overflow container cap (B).

4. Add John Deere Low Viscosity HY-GARD (J20D) transmission oil. DO NOT use Type "F" automatic transmission fluid.

5. Run engine for a few minutes.

6. STOP engine and wait a few minutes before checking transmission oil level. Add oil as necessary.

Changing Transmission Oil


M38670

1. Remove drain plug to drain oil.

2. Install and tighten drain plug.

IMPORTANT: Avoid damage! DO NOT FILL OVERFLOW CONTAINER.

ˇ Add oil only as necessary to sight tube level (A).


3. Remove container cap located under seat. Add approximately 4.4 L (4.6 qt) of John Deere Low Viscosity HY-GARD (J20D) transmission oil. DO NOT use Type "F" automatic transmission fluid.

4. Install cap.

5. Run engine.

6. Move hydraulic levers back and forth several times.

7. STOP engine. Wait 3 minutes.


M78405c

8. Oil MUST BE in center of sight tube (A).


M78405a

Changing Transmission Oil Filter

c CAUTION: Avoid injury! To avoid injury from escaping hydraulic oil under pressure:

ˇ Relieve pressure in system by STOPPING engine and operating all hydraulic control valves.

NOTE: Change transmission oil filter after first 50 hours of operation.

1. Do not drain transmission.


M38665

2. Turn transmission filter counterclockwise, using a filter wrench, to remove it.


M33797

3. Put a film of clean transmission oil on seal of new filter.


M33753

4. Fill the filter 1/3-1/2 full with John Deere Low Viscosity HY-GARD (J20D) transmission oil. DO NOT use Type "F" automatic transmission fluid.

5. Tighten filter QUICKLY until it contacts mounting surface. Tighten filter BY HAND an additional 1/2 turn.

6. Run engine a few minutes.

7. STOP engine.

8. Check transmission oil level. Add more oil if necessary.

Adjusting Transmission Neutral

c CAUTION: Avoid injury! Use extreme caution when doing this adjustment. Drive wheels are free to spin.

Remove jumper wire, if installed, from seat switch when adjustment is completed.

Adjust transmission neutral to assure that machine DOES NOT creep when pedals are in the NEUTRAL position.

You will need a hoist and two jackstands.

NOTE: If creep is intermittent, inspect transmission control linkage for wear or damage BEFORE adjusting transmission neutral.


M47708

1. Lift machine with a hoist until drive wheels are off the ground.

2. Put jackstands under frame.

3. Loosen pivot arm cap screw (A) and bolt (B).


M47708

4. Have someone push down center of seat cushion to activate seat safety switch, or use a jumper wire to bypass the seat switch.

5. Start engine. If engine does not crank, tighten nut (C) so switch plunger (D) contacts striker plate on lever (E).

6. Move throttle lever to full engine speed.

7. With brakes DISENGAGED, and engine running at full throttle, move pivot arm (F) forward and backward until drive wheels stop turning.

8. Stop engine.

9. Tighten cap screw (A) and bolt (B).

10. Start engine. Move throttle lever to full engine speed. Depress each control pedal several times to see if drive wheels STOP when pedals are released. If drive wheels continue to turn, repeat adjustment steps.

Lubricate PTO Shaft Bearing


M38664

Lubricate fitting (A) with one or two shots of John Deere Multipurpose Grease or equivalent.