Product Instruction Manual

1. Introduction

This manual provides essential information for the installation and proper use of the Yoursme AM120680 and AM120681 Mower Deck Gage Wheel Arms. These parts are designed as direct replacements for specific John Deere mower decks. Please read this manual thoroughly before attempting installation to ensure correct fitment and safe operation.

Image 1: The AM120680 and AM120681 Mower Deck Gage Wheel Arms.

2. Important Compatibility Information

It is critical to verify the compatibility of these parts with your specific mower model and serial number before purchase and installation. John Deere manufactures different sizes of deck wheel arms for the same models depending on the make year and serial number. This arm set measures 7/8-inch diameter with a 0.345-inch arm hole.

Image 2: Essential pre-purchase verification steps.

Image 3: Visual comparison of different arm sizes and their hole dimensions.

2.1. Fitment List

These arms are compatible with the following John Deere models and serial number ranges:

• 2210, 2305 with 54C & 62C Decks (Serial #s above 040000)
• GX335, GX345, GX355 with Serial #s below 090001
• X465, X475, X485, X495 with 54C Decks (Serial #s above 040000)
• X500, X520, X534, X540 with Serial #s below 020001
• X575, X585, X595, X700, X720, X724, X728, X729, X740, X744, X748, X749 with 54C Decks (Serial #s above 040000)
• LX280 with 54C Decks (Serial #s between 050001-090000)
• X320, X324 with 48C Decks with rotatable gage wheels (Serial #s below 040001)
• X340 with 54C Decks (Serial #s below 045000)

To locate your mower's ID tag and serial number, refer to the image below:

Image 4: Comprehensive fitment list and ID tag location guide.

3. Product Specifications

Image 5: Key features and benefits of the gage wheel arms.

Image 6: Detailed dimensions of the gage wheel arm.

4. Installation and Usage

4.1. Identifying Arm Placement

The two arms, AM120680 and AM120681, are designed for specific locations on the mower deck:

• AM120680: Used exclusively on the Right Hand Front of the mower deck.
• AM120681: Used on the Left Hand Front or Right Hand Rear of the mower deck.

Image 7: Correct placement of AM120680 and AM120681 arms.

4.2. Installation Steps (General)

1. Safety First: Ensure the mower is turned off, the engine is cool, and the spark plug wire is disconnected to prevent accidental starting. Engage the parking brake.
2. Access the Deck: Depending on your mower model, you may need to raise the deck or remove it for easier access to the gage wheel arms.
3. Remove Old Arm: Carefully remove the pin or bolt securing the old gage wheel arm. Note how the existing arm is oriented and attached.
4. Install New Arm: Insert the correct new arm (AM120680 or AM120681) into its designated position. Ensure the arm's shaft fits securely into the deck's mounting point.
5. Secure Arm: Re-insert the pin or bolt to secure the new arm. Ensure it is tightly fastened but allows for proper rotation of the gage wheel.
6. Re-attach Wheel (if applicable): If the gage wheel was removed, re-attach it to the new arm.
7. Repeat for Other Arms: Follow the same procedure for any other arms that need replacement.
8. Test Functionality: After installation, ensure all gage wheels can rotate freely and the deck height adjustment mechanism functions correctly.

For detailed, model-specific installation instructions, please consult your John Deere mower's official service manual.

5. Maintenance

To ensure the longevity and optimal performance of your mower deck gage wheel arms, consider the following maintenance tips:

• Regular Inspection: Periodically inspect the arms for signs of wear, bending, cracks, or corrosion. Check the integrity of the mounting points and fasteners.
• Cleaning: Keep the arms free from excessive dirt, grass clippings, and debris, which can accumulate and hinder movement or accelerate wear.
• Lubrication: Apply a suitable lubricant to the pivot points and shaft where the arm connects to the deck and where the wheel attaches, especially if you notice stiffness or squeaking.
• Proper Storage: When the mower is not in use for extended periods, store it in a dry environment to prevent rust and corrosion on metal components.

6. Troubleshooting

6.1. Common Issues and Solutions

• Arm Does Not Fit:
  • Cause: Incorrect arm diameter or hole size, or incompatible mower model/serial number.
  • Solution: Re-measure your original arm's diameter and hole size. Double-check your mower's model and serial number against the fitment list in Section 2. If discrepancies exist, the part is likely incompatible.
• Gage Wheel Does Not Rotate Freely:
  • Cause: Debris accumulation, bent arm, damaged wheel bearing, or improper installation.
  • Solution: Clean the area around the wheel and arm. Inspect the arm for any bending or damage. Check the wheel bearing for smooth operation. Ensure the arm is installed correctly and not overtightened.
• Excessive Wear or Damage:
  • Cause: Normal wear and tear, impact damage, or operating in harsh conditions.
  • Solution: Replace the damaged arm. Regular inspection and maintenance (Section 5) can help prevent premature wear.

7. Warranty and Support

For information regarding product warranty, returns, or technical support, please contact Yoursme customer service directly. Refer to the contact information provided with your purchase or visit the official Yoursme website.

For general inquiries or to confirm fitment before purchase, you may also reach out to the seller through the platform where the product was acquired.