Part of the John Deere Repair Manuals.
This 796-page John Deere 650, 750 Technical Manual (OEM #TM1242) covers the complete power train, engine, and hydraulic teardown for both the 650 and 750 tractor, so you're not guessing which spec applies to your unit. Open it to wiring diagrams for the charging, starting, and lighting circuits, hydraulic schematics for the rockshaft and selective control valve, and a full troubleshooting section that walks you through symptoms like slow lift speed or a rockshaft that won't lower. You get torque values and fluid intervals straight from the factory: replace the engine oil filter every 200 hours, and torque the hydraulic cover cap screws to 23-30 N.m. No more swapping parts on a hunch because a forum thread guessed wrong. Bookmarked by system and searchable by keyword, this PDF opens on your phone or tablet so you can carry the diagnosis right to the tractor and get it running again.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-100 | Specifications, Special Tools, Tune-Up, Lubrication, 650 Separation, 750 Separation |
| Engine Repair | 101-174 | Valve Train, Cylinder Head, Camshaft, Pistons, Crankshaft, Cooling System |
| Fuel and Repair | 175-206 | Specifications, Special Tools, Air Intake System, Diesel Fuel System, Speed Control Linkage |
| Electrical Repair | 207-252 | Specifications, Special Tools, Charging System, Starting Motor, Instruments, Lighting Circuits |
| 650 Power Train Repair | 253-356 | Engine Clutch, Sliding Gear Transmission, Differential, Final Drives, PTO (650 Gearing) |
| 750 Power Train Repair | 357-476 | Engine Clutch, Sliding Gear Transmission, Differential, Final Drives, PTO (750 Gearing) |
| Steering/Brakes Repair | 477-514 | Specifications, Special Tools, Steering Gear, Power Steering, Brakes |
| Hydraulic Repair | 515-552 | Specifications, Special Tools, Hydraulic Pump, Rockshaft, Implement Hitches, Selective Control Valve |
| Miscellaneous Repair | 553-572 | Axle End-Play, Pivot Pin Bushing, Spindle Shaft, Wheel Bearings, Roll-Gard Protective Equipment |
| Engine Operation and Tests | 573-590 | Lubrication System, Cooling System, Dynamometer Test, Compression Pressure, Valve Clearance, Engine Oil Pressure |
| Fuel/Air Operation and Tests | 591-622 | Air Intake System, Diesel Fuel System, Precombustion Chamber, Injection Pump Timing, Fuel Injection Nozzles, Governor Assembly |
| Electrical Operation and Tests | 623-673 | General Diagnosis, Wiring Diagrams, Charging System, Starting Circuit, Instruments and Accessory Circuits, Lighting Circuits |
| 650 Power Train Operation and Tests | 674-703 | Single-Stage Engine Clutch, Eight-Speed Transmission, Differential, Diagnosis, Tests (650) |
| 750 Power Train Operation and Tests | 704-731 | Single-Stage Engine Clutch, Eight-Speed Transmission, Differential, Diagnosis, Tests (750) |
| Steering/Brakes Operation and Tests | 732-746 | Manual Steering Operation, Power Steering Operation, Flow Divider Block Operation, Brake Operation, Diagnosing Malfunctions |
| Hydraulic Operation and Tests | 747-796 | Hydraulic System Operation, Hydraulic System Tests, Hydraulic Pump Operation, Rockshaft Operation, Selective Control Valve Operation, Diagnosing Malfunctions |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine oil filter replacement | 200 Hours | p. 49 |
| Transmission-Hydraulic oil filter replacement | 200 Hours | p. 51 |
| Air filter service interval | every 200 hours | p. 181 |
| Air filter replacement interval | annually or every 600 hours | p. 181 |
| Torque cover cap screws | 23-30 N.m (17-22 ft-lbs) | p. 524 |
| Tighten hex connector | securely | p. 525 |
| Battery Volts | 12.4 to 12.8 | p. 209 |
