Overview
The John Deere 3120, 3320, 3520, 3720 Compact Utility tractor repair service manual provides a technical reference for the covered equipment. Its purpose is to help locate information relevant to inspection, troubleshooting, servicing and repair, as applicable to the supplied publication.
The documented contents outline identifies safety, specifications and information, general specifications and fuel and lubricants. The table below lists selected source-supported subjects; consult the publication for exact service procedures and specifications.
Important Information: Confirm the applicable serial-number or production range in the supplied documentation before selecting a procedure.
Table of Contents
John Deere 3120, 3320, 3520, 3720 Compact Utility Manual
Main sections and selected subjects identified in the source documentation:
- Safety
- Specifications and Information
- General Specifications
- Fuel and Lubricants
- Engine
- Specifications
- Component Location
- Theory of Operation
- Diagnostics
- Tests and Adjustments
- Repair
- Electrical-NA
- General Information
- Schematics and Harnesses
- Schematics and Harnesses MY08
- Schematics and Harnesses MY13
- Common Schematics and Harnesses
- Operation and Diagnostics
- Display Panel Tests and Adjustments
- SERVICEGARD™ Tests and Adjustments
- Service ADVISOR™ Test and Adjustments
- Electrical-EEC
- Troubleshooting
- Power Train-PRT
- Power Train-Hydrostatic
- Schematics
- Power Train-Final Drive
- Final Drive Troubleshooting
- PTO Theory of Operation
- PTO Repair
- Hydraulics
Serial-Number Applicability
The covered production ranges or serial groups may affect the applicable procedures. Check the identification details on the machine against the source documentation.










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