Part of the John Deere Repair Manuals.
This 596-page John Deere GX255, GX325, GX335, GX345 Technical Manual (OEM #TM1973) covers every Garden Tractor variant in one place, so you stop cross-referencing three books when your Kawasaki-powered mower won't move. Inside: complete wiring diagrams for starting, charging, and PTO circuits, plus hydraulic lift schematics that walk you through oil flow testing and control valve repair. You get full troubleshooting trees for each engine (FH531V, FH601V, FD611V), hydrostatic transaxle rebuild steps, and steering service broken out by model. Set fuel pump pressure to a minimum of 6.1 kPa (0.9 psi) and torque the fuel pump mounting cap screw to 17 N-m (150 lb-in), straight from the factory page. No more guessing whether your 335's steering valve or your 255's steering gear is the problem. Bookmarked by section, searchable by keyword; pull it up on your phone in the shop and get the tractor moving again.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 5-10 | Recognize Safety Information, Handle Fluids Safely, Prevent Battery Explosions, Service Machines Safely, Use Proper Tools, Dispose of Waste Properly |
| Specifications and Information | 11-18 | Fastener Torques (Metric Fastener Torque Values, Inch Fastener Torque Values, Gasoline, Gasoline Storage, Engine Oil - North America, Engine Oil - Europe, Engine Break - in Oil, Hydrostatic Transmission Oil, Anti-Corrosion Grease, Alternative Lubricants, Synthetic Lubricants, Lubricant Storage, Mixing of Lubricants, Chassis Grease, Oil Filters) |
| Engine - Kawasaki (FH531V) | 19-68 | General Specifications, Torque Specifications, Engine Troubleshooting, Valve Clearance, Fuel Pump Test, Starting Motor Repair |
| Engine - Kawasaki (FH601V) | 69-130 | General Specifications, Torque Specifications, Choke Plate Adjustment, Crankcase Vacuum Test, Engine Removal, Carburetor Disassembly, Crankshaft Inspection |
| Engine - Kawasaki (FD611V) | 131-188 | General Specifications, Repair Specifications, Cylinder Leak-Down Test, Cooling System Pressure Test, Water Pump Removal, Piston and Connecting Rod |
| Electrical | 189-328 | Schematics and Harnesses, Starting Circuit Operation, Charging Circuit Diagnosis, PTO Circuit Operation, Battery Load Test, Connector Repair |
| Power Train - Hydrostatic | 329-432 | Hydrostatic Transaxle Specs, Neutral Creep Adjustment, Machine Will Not Move Diagnosis, Transaxle Disassembly, Brake Installation, Charge Pump Installation |
| Hydraulics | 433-454 | Hydraulic Lift System Operation, Excessive Attachment Drop Diagnosis, Hydraulic Lift Oil Flow Test, Hydraulic Lift Control Valve Repair, In-Line Filter Removal |
| Steering - 255 | 455-472 | Steering System Leakage Test, Steering Wheel Centering, Steering Gear Removal, Steering Control Unit Disassembly, Front Axle Component Location |
| Steering - 325 | 473-488 | Steering Wheel Freeplay, Steering Gearbox Operation, Steering Shimmies Diagnosis, Drag Link Adjustment, Toe-In Adjustment, Steering Gearbox Repair |
| Steering - 335/345 | 489-514 | Steering Valve and System Operation, Tilt Steering Operation, Steers Hard/No Steering Diagnosis, Steering System Leakage Test, Steering Cylinder Leakage Test |
| Brakes | 515-526 | Brake Pedal and Linkage, Transaxle Brake Operation, Parking Brake Does Not Hold Diagnosis, Brake Linkage Test, Brake Assembly Repair |
| Attachments | 527-564 | Mower Deck Adjustment Specs, PTO Clutch Diagnosis, Mower Level Side-to-Side, Electric PTO Clutch Adjustment, 48-Inch Deck Spindles, 54-Inch Jack Sheave |
| Miscellaneous | 565-596 | Hood Latch Adjustment, Lift Assist Spring Adjustment, Checking Wheel Bolt Torque, Front Axle Repair, Fuel Tank Removal, Attachment Lift (Foot Pedal) Removal |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| FH531V engine | ||
| Fuel Pump Pressure (minimum), FH531V engine | 6.1 kPa (0.9 psi) | p. 23 |
| Fuel Pump Flow (minimum) | 65 ml/15 seconds (2.2 oz/15 seconds) | p. 23 |
| FH601V engine | ||
| Fuel Pump Pressure (minimum), FH601V engine | 6.12 kPa (0.90 psi) | p. 71 |
| FD611V engine | ||
| Fuel Pump Mounting Cap Screw Torque | 17 N•m (150 lb-in.) | p. 134 |
| Fuel Pump Push Rod Bend (maximum) | 0.05 mm (0.0002 in.) | p. 134 |
| All Models | ||
| Electric PTO Clutch Air Gap | 0.31 – 0.46 mm (0.012 – 0.018 in.) | p. 196 |
| Electric PTO Clutch Coil Resistance | 2.8 – 3.3 ohms | p. 196 |
