Part of the John Deere Repair Manuals.
This is the John Deere TM1518 Technical Manual for Gator Utility Vehicles in 4X2 and 4X6 configurations, the same 692 page factory document Deere wrote for its own service technicians. It covers the gas air-cooled and liquid-cooled engines (FE290D and FD620D) and the diesel engine, along with the electrical system, power train, steering, brakes, and the rotary broom attachment.Every system is grouped so you can move straight to specifications, diagnostics, tests and adjustments, and repair procedures for the job in front of you. Torque values, carburetor settings, battery data, and drive belt measurements are all laid out for each variant.Whether you are chasing a no-start, rebuilding a carburetor, or replacing a worn drive belt, this PDF gives you the factory procedures and specs to do the work correctly on your own Gator.
What's Inside This John Deere 4X2, 4X6 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-10 | Recognize Safety Information, Replace Safety Signs, Handle Fluids Safely - Avoid Fires, Be Prepared for Emergencies, Use Care in Handling and Servicing Batteries |
| Specifications & Information | 11-28 | Fastener Torques, O-Ring Seal Service Recommendations, General Information, Coolant Specifications, Serial Number Locations |
| Engine - Gas (Air-Cooled) | 29-78 | Specifications, Component Location, Diagnostics, Tests and Adjustments, Repair |
| Engine - Gas (Liquid-Cooled) | 79-132 | Specifications, Component Location, Diagnostics, Tests and Adjustments, Repair |
| Engine - Diesel | 133-228 | Specifications, Component Location, Theory of Operation, Diagnostics, Tests and Adjustments, Repair |
| Electrical | 229-490 | Operation and Diagnostics, Specifications - 4X2 Gas, Component Locations, Schematics and Harnesses - 4X2 Gas, Tests and Adjustments, Cargo Box Lift Kit |
| Power Train - Gear | 491-526 | Specifications, Component Location, Theory of Operation, Diagnostics, Tests and Adjustments, Repair |
| Steering | 527-542 | Specifications, Component Location, Diagnostics, Tests and Adjustments, Repair |
| Brakes | 543-556 | Adjustments, Diagnostics, Repair, Specifications, System Operation, Troubleshooting Guide |
| Attachments | 557-624 | Specifications, Rotary Broom, Component Location, Electrical, Operation and Diagnostics, Rotary Broom Electrical |
| Rotary Broom Engine | 625-670 | Specifications, Component Location, Diagnostics, Tests and Adjustments, Repair, Torque Specifications |
| Miscellaneous | 671-678 | Specifications, Tests and Adjustments, Repair |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 4X2 | ||
| Rear Wheel Mounting Cap Screw Torque | 88 N•m (65 lb-ft) | p. 519 |
| All Models | ||
| Front Wheel Mounting Cap Screw Torque | 88 N•m (65 lb-ft) | p. 669 |
| Drive Belt Width (New) | 30.2 mm (1.19 in.) | p. 493 |
| Drive Belt Width (Minimum) | 27 mm (1.063 in.) | p. 493 |
| F3 Fuse (W18 Light and Horn Wiring Schematic) | 15A | p. 420 |
| 6X4 | ||
| Rear Wheel Mounting Cap Screw Torque | 88 N•m (65 lb-ft) | p. 521 |
| FE290D (4X2) | ||
| Carburetor SLOW idle mixture screw initial setting (PIN -12700) with no limiter cap | 1-3/8 Turns | p. 31 |
| Carburetor SLOW idle stop screw setting | .50 rpm less than throttle control arm SLOW idle stop screw setting | p. 31 |
| 4X2 Gas | ||
| Battery Voltage | 12 | p. 235 |
| Battery BCI group | U-1 | p. 235 |
| 6X4 Diesel | ||
| F11 Fuse (W31 Backup Alarm Wiring Harness) | 10 A | p. 317 |
| Rotary Broom Engine | ||
| Air Cleaner Assembly Carburetor Mounting Nuts Torque | 10 - 12 N•m (88 - 106 lb-in.) | p. 640 |
John Deere 4X2, 4X6 Common Problems This Manual Covers
No-start, rough running, low power
Owners commonly trace a no-start, rough running, or stalling on the air-cooled gas Gators to a failed or dirty carburetor, stale fuel, or a restricted air filter. The manual's diagnostics and repair coverage walks through the fuel system on the FE290D engine.
Manual Section: Engine - Gas (Air-Cooled) p. 29Fuel leaking into the crankcase
A failing carburetor or bad gasket can let raw fuel wash past into the crankcase, thinning the oil and contaminating the engine. Component tests and repair steps for the liquid-cooled FD620D are covered here.
Manual Section: Engine - Gas (Liquid-Cooled) p. 79Diesel hard starting or low power
Diesel Gators can suffer hard starting, low power, or dying out from fuel delivery faults, air in the system, or valve train wear. Theory of operation, diagnostics, and repair for the diesel engine are laid out in full.
Manual Section: Engine - Diesel p. 133Battery failure and bad connections
Electrical trouble, particularly a weak battery or corroded connections, is one of the most common complaints on these machines. The electrical section covers battery specifications, tests, and the schematics needed to chase a fault.
Manual Section: Electrical p. 229Brake groan or grinding
Brakes that groan, grind, or lose bite under hard use point to worn or contaminated brake components. Adjustments, diagnostics, and repair with a troubleshooting guide are included.
Manual Section: Brakes p. 543Drive belt slipping or worn belt
The drive belt is a known wear item and can slip or lose drive after extended hours. Power train specifications, including new and minimum belt width, plus tests and repair, help you judge and replace it.
Manual Section: Power Train - Gear p. 491Frequently Asked Questions
Which machines does this manual cover?
This is the John Deere TM1518 Technical Manual covering Gator Utility Vehicles in 4X2 and 4X6 configurations. It documents the gas air-cooled and liquid-cooled engines, the diesel engine, plus the electrical, power train, steering, brake, and rotary broom attachment systems.
Does it give the wheel nut torque spec?
Yes. The Power Train section lists the rear wheel mounting cap screw torque at 88 N•m (65 lb-ft) for the Gator, along with drive belt and clutch specifications. p. 491
What carburetor idle setting does it list?
The manual gives carburetor settings by engine. For the FE290D air-cooled gas engine, the SLOW idle mixture screw initial setting is 1-3/8 turns, detailed in the Engine, Gas (Air-Cooled) section. p. 29
How will I receive this John Deere 4X2, 4X6 Technical Manual?
You get a 692-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone — bring it right to the shop floor.
Are there any print restrictions on this John Deere 4X2, 4X6 manual?
None at all — the PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Does this John Deere 4X2, 4X6 Technical Manual have electrical diagrams?
Complete wiring diagrams are included, covering all electrical circuits, harness routing, and connector pinouts for the John Deere 4X2, 4X6.
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