John Deere

OMm145728

Issue I1

Lawn and Garden Tractors

GX325, GX335 and GX345

PIN (105001- )

Introduction

Product Identification

Safety

Operating

Replacement Parts

Service Intervals

Service Lubrication

Service Engine - Models GX325 and GX335

Service Engine - Model GX345

Service Transmission

Service Steering

Service Mower

Removing Mower

Installing Mower

Replacing Mower Drive (Primary) Belt

Replacing Mower Deck (Secondary) Belt

Checking for Bent Mower Blades

Servicing Mower Blades

Sharpening Blades

Balancing Blades

Service Electrical

Service Miscellaneous

Troubleshooting

Storage

Assembly

Specifications

Warranty

John Deere Quality Statement

Service Record

All Manuals Close Window

Service Mower


Removing Mower

c CAUTION: Avoid injury! Rotating blades are dangerous. Before adjusting or servicing mower:

Disconnect spark plug wire(s) to prevent engine from starting accidently.

Always wear gloves when handling mower blades or working near blades.

1. Start engine. Raise mower deck completely.

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

3. Turn mower depth control knob to "0" position.


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4. 54C Mower Only - Rotate all mower wheels to allow mower deck to be rolled outward away from machine:

a. Pull out on pin (A).

b. Rotate mower wheel (B) 90 and align hole in wheel shaft with pin.

c. Release pin to lock mower wheel in rotated position.

c CAUTION: Avoid injury! Do not attempt mower deck removal until lowered completely using hydraulic control lever. Mower could drop unexpectedly causing crushing injury if left in the raised position.

5. Start engine. Lower mower completely.

6. Stop engine and remove key.

c CAUTION: Avoid injury! Belt tension rod is spring-assisted and under tension. Keep a secure grasp on rod at all times while releasing or applying drive belt tension.


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7. Remove drive belt tension:

a. Grasp and hold tension rod (C) securely.

b. Disengage rod from retaining bracket (D).

c. Move rod as far as possible toward rear wheel to remove all belt tension.


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8. Hold tension rod in position (E) while removing drive belt.


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9. Remove mower drive belt (F) from machine drive sheave (G) and mower drive sheave (H).

10. Move tension rod to the latched position.


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11. Pull out and push down on lever (I) to release front lift rod assembly.


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Picture Note: 54C mower shown.

12. Remove front lift rod assembly (J) from machine and mower deck.

c CAUTION: Avoid injury! Make sure mower has been lowered as far as it will go.

NOTE: It may be necessary to manually lift up on rear of mower deck to pull out J-pins.


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13. Pull outward on J-pins (K) at both sides of mower to disconnect draft arms.

14. Start engine. Raise mower lift arms completely.

15. Stop engine and remove key.

16. Slide mower deck out from under machine.

Installing Mower

c CAUTION: Avoid injury! Rotating blades are dangerous. Before adjusting or servicing mower:

Disconnect spark plug wire(s) to prevent engine from starting accidently.

Always wear gloves when handling mower blades or working near blades.

IMPORTANT: Avoid damage! If equipped, remove tire chains before installing mower to machine to prevent mower damage.


1. Start engine. Raise mower lift arms completely.

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


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3. 54C Mower Only - Make sure mower wheels (A) are rotated to allow deck to be rolled under machine.

4. Slide mower under machine.

5. Turn mower height control knob to "0" position.

6. Start engine and lower mower lift arms completely.

7. Stop engine and remove key.


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8. Place lift arms between rear mower deck lift brackets and pull rear J-pin (B) out to attach brackets to lift arms on each side of mower.


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Picture Note: 54C mower shown.

9. Hook front lift rod assembly (C) into mower bracket.


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10. Place front lift rod (D) into frame hooks so lever (E) is at left side of machine. Make sure rod is seated in frame hooks.


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11. Push lever (E) up so pin on lever is locked in hole on left side of frame.

c CAUTION: Avoid injury! Drive belt tension rod is spring-assisted and under tension. Keep a secure grasp on rod at all times while releasing or applying drive belt tension.


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12. Remove drive belt tension rod (F) from bracket (G) and move rod all the way out toward you as far as it will go.


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13. Hold tension rod in position (H) while installing drive belt.


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14. Install mower drive belt (I) on machine drive sheave (J) and mower drive sheave (K).

c CAUTION: Avoid injury! Drive belt tension rod is spring-assisted and under tension. Keep a secure grasp on rod at all times while releasing or applying drive belt tension.

15. Pivot the drive belt tension rod toward front of machine to tighten drive belt. Hook tension rod into bracket on mower.

16. Adjust mower level front-to-rear and side-to-side.

17. 54C Mower Only - Rotate mower wheels to operating position.

18. Adjust mower wheels for desired cutting height.

Replacing Mower Drive (Primary) Belt

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

2. Lower the mower completely.

c CAUTION: Avoid injury! Belt tension rod is spring-assisted and under tension. Keep a secure grasp on rod at all times while releasing or applying drive belt tension.


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3. Remove drive belt tension:

a. Grasp and hold tension rod (A) securely.

b. Disengage rod from retaining bracket (B).

c. Move rod as far as possible toward rear wheel to remove all belt tension.


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4. Hold tension rod in position (C) while removing drive belt.


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5. Remove mower drive belt (D) from machine drive sheave (E) and mower drive sheave (F).

6. Clean belt with a clean cloth.

7. Inspect belt for wear or damage. Replace as necessary.

8. Install belt on mower sheave and engine sheave.

9. Pivot the drive belt tension rod toward front of machine to tighten drive belt. Hook tension rod into bracket on mower.

Replacing Mower Deck (Secondary) Belt

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

2. Remove mower deck.


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3. Remove locknuts securing belt shields (A). Remove belt shields.

c CAUTION: Avoid injury! Springs are installed under tension. Use caution when attaching or disconnecting springs. Wear eye protection.

4. Disconnect idler spring (B) from hook (C).


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5. Remove mower belt (D).

6. Clean upper mower deck and sheaves.

7. Inspect belt for wear and damage. Replace if necessary.

8. Install belt on mower.

9. Connect idler spring.

10. Install belt shields.

11. Install mower to machine.

Checking for Bent Mower Blades

c CAUTION: Avoid injury!

Service mower blades safely:

Disconnect spark plug wires or negative (-) battery cable to prevent accidental startup.

Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.

1. Place mower deck in mowing position.

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


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3. Measure distance (A) between blade tip and flat ground surface.

4. Rotate blade 180 and measure other blade tip.

5. Install new blade if the difference between the two blade tip measurements is more than 3 mm (1/8 in.).

6. Repeat for all blades.

Servicing Mower Blades

c CAUTION: Avoid injury!

Service mower blades safely:

Disconnect spark plug wires or negative (-) battery cable to prevent accidental startup.

Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.

Removing Mower Blades

1. Raise or remove mower deck.

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

3. Block mower blade with a piece of wood to prevent it from spinning.


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4. Loosen and remove bolt (A), washer (B), and blade (C).

5. Inspect blade condition. Sharpen, balance, or replace blades as necessary.

Installing Mower Blades

1. Make sure deflector cup (D) is seated properly between mower spindle and blade.

2. Position mower blade (C) with cutting edge towards the ground onto the mower spindle.

3. Install blade washer (B) with cup side toward the blade.

4. Install and tighten bolt (A) by hand until mower blade is in full contact (fully seated) with spindle.

5. Block mower blade with a piece of wood to prevent spinning.

6. Tighten blade bolt to 68 Nm (50 lb-ft).

7. Repeat for all blades.

Sharpening Blades

c CAUTION: Avoid injury! Mower blades are dangerous:

Always wear gloves while working on blades.

Always wear safety eye protection when grinding.

Sharpen blades with grinder, hand file, or electric blade sharpener.


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Keep original bevel (A) when grinding.

Blade should have 0.40 mm (1/64 in.) cutting edge (B) or less.

Balance blades before installing.

Balancing Blades

c CAUTION: Avoid injury! Mower blades are dangerous:

Always wear gloves while working on blades.

Always wear safety eye protection when grinding.

1. Clean blade.


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2. Put blade on nail in a vise. Turn blade to horizontal position.

3. Check balance. If blade is not balanced, heavy end of blade will drop.

4. Grind bevel of heavy end. Do not change blade bevel.