Need factory service data for your Kubota MX4700 or MX5100? The 417 pages here lay out all nine major systems: engine, clutch, transmission, rear axle, brakes, front axle, steering, hydraulics, and the full electrical system. Wiring diagrams trace the OPC system, alternator, and engine starting circuit; hydraulic schematics follow the three-point lift, position control valve, and steering circuit end to end. Troubleshooting charts, torque tables, clearance specs, and step-by-step disassembly and assembly procedures sit behind exploded-view drawings throughout. Rear wheel hardware torques to 197-226 N·m, and the power steering main delivery hose nut sets to 46.6-50.9 N·m. No more chasing a hydraulic fault with a prayer and a parts-store diagram. Everything is bookmarked by system, so the spec you need is two taps away.
What's Inside This Kubota MX4700, MX5100 Manual
| System | Pages | Key Topics |
|---|---|---|
| G General | 14-83 | General |
| 1 Engine | 84-159 | Checking and Adjusting, Disassembling and Assembling, Cylinder Head and Valves, Piston and Connecting Rod, Crankshaft, Oil Pump |
| 2 Clutch | 160-193 | Checking and Adjusting, Disassembling Clutch, Disassembling PTO Clutch, Travelling Clutch, Hydraulic PTO Clutch |
| 3 Transmission | 194-250 | Separating Engine and Clutch Housing Case, Separating Clutch Housing and Mid Case, Disassembling Clutch Housing, Separating Mid Case and Transmission Case, Disassembling Mid Case |
| 4 Rear Axle | 251-259 | - |
| 5 Brakes | 260-273 | Checking and Adjusting, Separating Brake Case from Transmission Case, Servicing |
| 6 Front Axle | 274-300 | Checking and Adjusting, Separating Front Axle, Disassembling 2WD Type Front Axle, Disassembling 4WD Type Front Axle, 2WD Type, 4WD Type |
| 7 Steering | 301-324 | Hydraulic Pump Test Using Flow-Meter, Relief Valve, Hydraulic Pump, Steering Wheel and Steering Controller, Steering Cylinder |
| 8 Hydraulic System | 325-368 | Hydraulic Pump Test Using Flow-meter, Relief Valve, Hydraulic Pump, Hydraulic Cylinder, Position Control Valve, Cylinder Safety Valve |
| 9 Electrical System | 369-417 | Wiring Diagram, Engine Starting System, OPC (Operator Presence Control) System, Battery, Alternator, Safety Switch |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front wheel mounting nut torque | 124.0 to 147.0 N·m | p. 285 |
| Rear wheel mounting screw and nut torque | 197 to 226 N·m | p. 285 |
| Power steering main delivery hose retaining nut torque | 46.6 to 50.9 N·m | p. 310 |
| Power steering turning delivery hoses retaining nut torque | 24.5 to 29.4 N·m | p. 310 |
| Regulator valve mounting screws torque | 17.6 to 20.6 N·m | p. 347 |
| Position control valve mounting bolt (M8) torque | 23.6 to 27.4 N·m | p. 347 |
| Hydraulic Cylinder Bore I.D. (Factory spec) | 90.000 to 90.050 mm | p. 346 |
| Hydraulic Cylinder Bore I.D. (Allowable limit) | 90.150 mm | p. 346 |
| Fuel filter element replacement interval | every 400 Hr | p. 27 |
| Engine oil filter replacement interval | every 200 Hr | p. 27 |
| Fan belt tension (deflection) | 12 mm (0.48 in.) at 98 N (10 kgf, 22 lbf) of force | p. 103 |
| Fan belt adjustment interval | every 100 Hr | p. 27 |
Kubota MX4700, MX5100 Common Problems This Manual Covers
Kubota MX5100 engine loses power and bogs down heavily when hydrostatic pedal is engaged under load.
Check the fuel filter element and replace it every 400 Hr as shown on page 27. Inspect the engine oil filter and tighten it by hand an additional 1/2 turn only. Verify the fan belt tension on page 103 has 12 mm (0.48 in.) deflection at 98 N of force.
Manual Section: Engine TroubleshootingImplement drops by its own weight or fails to reach maximum lift height during operation.
Test the hydraulic cylinder safety valve operating pressure and verify it reads 19.6 to 22.6 MPa on page 345. Check the hydraulic cylinder bore inner diameter against the factory spec of 90.000 to 90.050 mm on page 346. Torque the 3-Points delivery pipe joint bolts to 49.0 to 69.0 N·m.
Manual Section: Hydraulic System TroubleshootingTravelling clutch slips during operation or PTO clutch shaft fails to rotate under heavy implement load.
Measure the clutch pedal free play and adjust it to 20 to 30 mm as specified on page 168. Inspect the PTO clutch seal ring thickness to ensure it meets the 2.45 to 2.50 mm factory spec on page 193. Torque the PTO shaft lock nut to 147 to 196 N·m.
Manual Section: Clutch TroubleshootingFront wheels wander during transport and steering feels abnormally hard or fluctuates in force.
Set the front wheel alignment toe-in to 2 to 8 mm on page 282. Torque the front wheel mounting nuts to 124.0 to 147.0 N·m on page 285. Compare the 2WD steering cylinder inner diameter against the 50.000 to 50.062 mm spec on page 309.
Manual Section: Steering TroubleshootingFrequently Asked Questions
What is the torque spec for Kubota MX4700/MX5100 wheel nuts?
On the MX4700/MX5100, front wheel mounting nuts tighten to 124.0 to 147.0 N·m (91.5 to 108.4 lbf·ft). Rear wheel mounting bolts and nuts call for 196.0 to 225.0 N·m (145 to 166 lbf·ft). The same figures hold across the General, Transmission, Rear Axle, and Front Axle sections of the manual.
What is the torque spec for Kubota MX4700/MX5100 head bolts?
Cylinder head screws on the MX4700/MX5100 torque to 93.2 to 98.0 N·m (9.50 to 10.0 kgf·m, 68.8 to 72.3 lbf·ft). Apply enough oil to the screws first, then tighten them in a diagonal sequence, working outward from the center to prevent head deformation. The full procedure is detailed on page 1-S41 of the manual.
How do I bleed the fuel system on a Kubota MX4700/MX5100?
Start by filling the fuel tank and opening the fuel cock (1). Open the air vent cock (2) on the fuel injection pump, run the engine about 30 seconds, then shut it off and close the vent cock. Bleeding is needed whenever the fuel filter or lines come off, the tank runs completely dry, or the tractor has sat unused for a long stretch.
What format is this Kubota MX4700, MX5100 manual in?
Immediate download of the complete 417-page searchable workshop manual. Open it on any device: laptop at the desk or phone out in the field.
Am I able to print pages from this Kubota MX4700, MX5100 manual?
Yes. Print as many copies as you like; there are no restrictions. Plenty of mechanics print just the section they need and carry it to the shop floor.
Are there wiring harness diagrams in this Kubota MX4700, MX5100 manual?
Yes. You'll find full electrical schematics with wire routing diagrams, connector identification, and circuit descriptions.
Document Quality
This is a scanned PDF document with an OCR layer, so you can search and copy the full text. The main text is generally crisp and easy to read, though some smaller text and headers show minor scanning artifacts. Diagrams and illustrations are raster images, likely scanned from a physical manual, and while labels are readable, they are not perfectly sharp at high zoom. The pages are clean with no notable stains, marks, or skewed content. You will find several blank pages that serve as section dividers throughout the document.
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