Kubota built OEM WSM #11231 for the M7580, M8580, and M9580, and these 561 pages hand you the same repair knowledge their own techs work from. The wiring section runs 24 pages across battery, starting, charging, and lighting circuits. Hydraulic schematics trace every line from the tandem pump through the auxiliary control valves and the three-point hitch cylinder. Troubleshooting fills 15 pages spanning engine, clutch, transmission, brakes, front axle, steering, and hydraulics, backed by 10 pages of torque tables and 8 pages of clearance specs. The hydraulic system runs at 19.61 MPa; the crankcase takes 16.3L with a filter; the M9580 carries a 120L fuel tank against 105L on the other two. When your machine is down, the factory answer comes first try. Bookmarked and keyword-searchable on any device.
What's Inside This Kubota M7580, M8580, M9580 Manual
| System | Pages | Key Topics |
|---|---|---|
| Mechanism | 10-215 | Others (Tires, Types of Tire, Tread Adjustment, Front Wheel, Rear Wheel, Clamp Type Power Adjusted Wheel, Wheel Hub, Tire Pressure, Ballast, Tire Liquid Injection, Specifications of Implments Limitations, Hydraulic Control Unit Use Reference Chart) |
| General | 216-249 | Tractor Identification, Lubricants and Fluid, Tightening Torques, Maintenance Check List |
| Seperation | 250-273 | Tightening Torques (Front Axle, Engine, PTO Clutch Valve, Clutch Housing, M9580 Mid Case, Hydraulic Cylinder Assembly, Rear Axle, Point Hitch, PTO Rear Cover, Cross Member, Air Conditioner Pipe, Cabin) |
| Sect 1 Engine | 274-327 | Trouble-Shooting, Servicing Specifications (External Components, Engine Body), Valve Timing, Camshaft, Piston-Piston Ring, Connecting Rod, Cylinder Liner (Lubricating System) |
| Sect 2 Clutch | 328-343 | Trouble-Shooting (Travelling Clutch, PTO Clutch, Bi-Speed Turn, Servicing Specifications), Servicing Specifications (Travelling Clutch) |
| Sect 3 Transmission | 344-409 | Trouble-Shooting (Synchromesh Shuttle Transmission, Ic Shuttle Transmission, Dual Speed Transmission), Dual Speed Transmission (Bi-Speed Turn, Servicing Specifications) |
| Sect 4 Rear Axle | 410-417 | Trouble-Shooting, Servicing Specifications (Differential Gear, Rear Axle), Tightening Torques (Differential Gear, Rear Axle Case), Disassembling and Assembling (Differential Gear) |
| Sect 5 Brakes | 418-429 | Trouble-Shooting (Travelling Brake, Parking Brake), Servicing Specifications (Travelling Brake, Tightening Torques (Travelling Brake, Checking |
| Sect 6 Front Axle | 430-449 | Trouble-Shooting, Servicing Specifications, Tightening Torques, Checking, Disassembling and Servicing (Checking and Adjusting) |
| Sect 7 Steering | 450-457 | Trouble-Shooting, Servicing Specifications (Power Steering Controller, Tightening Torques), Checking, Disassembling and Servicing |
| Sect 8 Hydraulic | 458-485 | Trouble-Shooting, Servicing Specifications (Hydraulic Pump, Relief Valve, Cylinder Safety Valve), Hydraulic Cylinder (Draft Sensor Bar, Control Linkage) |
| Sect 9 Electrical | 486-543 | Trouble-Shooting (Battery, Starting System, Lighting System), Engine Key Switch Shut-Off System, Charging System, Lighting System (Easy Checker) |
| Sect 10 Platform | 544-561 | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| M7580, M8580 | ||
| Fuel Tank Capacity | 105 l (27.7 U.S. gal, 23.1 Imp. gal) | p. 218 |
| M9580 | ||
| Fuel Tank Capacity | 120 l (31.7 U.S. gal, 26.4 Imp. gal) | p. 218 |
| All Models | ||
| Engine Crankcase Capacity (with filter) | 16.3 L | p. 5 |
| Hydraulic System Pressure | 19.61 MPa | p. 5 |
| Cylinder Head Screws Torque | 127.5 to 137.3 N·m | p. 285 |
| Valve Clearance (cold) | 0.25 mm | p. 277 |
| Radiator Fan Belt Tension (Deflection at 98N) | 7 to 9 mm | p. 283 |
| Rear Axle Nut Torque | 392 to 539 N·m | p. 412 |
| Brake Pedal Free Play | 40 to 50 mm | p. 330 |
| Front Wheel Alignment Toe-in | 2.0 to 8.0 mm | p. 431 |
| M7580, M8580, M9580 | ||
| Fuel Tank Capacity | 105 L (M7580, M8580); 120 L (M9580) | p. 5 |
| PTO Clutch Disc Diameter | 325 mm (M7580-M8580); 350 mm (M9580) | p. 37 |
Kubota M7580, M8580, M9580 Common Problems This Manual Covers
Kubota M7580/M8580/M9580 engine cranks normally but won't fire in cold morning temperatures p. 274
Check the glow plugs first; cold-start failures almost always trace back here. Verify the glow lamp illuminates for the full preheat cycle before cranking. Follow the engine troubleshooting tree on page 274. If the engine starts but runs rough, inspect valve clearance: cold spec is 0.25 mm per page 277.
Manual Section: Sect 1 EngineThree-point hitch implement slowly drops under load with engine at operating speed p. 458
Inspect hydraulic system pressure against the 19.61 MPa spec. A slow drop under load usually points to a leaking cylinder safety valve or worn control linkage seals. Work through the hydraulic troubleshooting chart on page 458, starting at pump output before pulling any internal components.
Manual Section: Sect 8 HydraulicPTO clutch slips or won't engage at full speed under heavy load p. 328
Test operating pressure and disc condition against the clutch troubleshooting chart on page 328. Remove the PTO clutch cover and inspect disc wear; on M7580 and M8580 models the disc diameter is 325 mm, and 350 mm on the M9580. Oil-contaminated or glazed discs won't hold under draft load regardless of pressure.
Manual Section: Sect 2 ClutchLeft and right brake pedals require unequal force, tractor pulls when stopping p. 418
Measure free play at both brake pedals; spec is 40 to 50 mm (page 330). Unequal pedal travel is the first adjustment to make. If travel matches but braking stays uneven, follow the brake troubleshooting chart on page 418 to check for a dragging pad or oil contamination on the weak-side lining.
Manual Section: Sect 5 BrakesFront wheels wander or pull to one side on flat, level ground p. 430
Verify toe-in with a tape measure across the front tires, front and rear of the rim; spec is 2.0 to 8.0 mm (page 431). Reset tread width and recheck before touching steering components. If toe-in is correct but wander continues, inspect front axle pivot bushings and review the troubleshooting chart on page 430.
Manual Section: Sect 6 Front AxleBattery keeps going dead, alternator warning light stays on while engine runs p. 486
Gauge alternator brush length; replace if worn below 12.5 mm (page 493). Short brushes lose contact under heat and vibration before any other component fails. With the engine running, verify charging voltage at the battery terminals. If brushes are good but the battery still drains, trace the circuit through the electrical troubleshooting chart on page 486.
Manual Section: Sect 9 ElectricalFrequently Asked Questions
What are the recommended service intervals?
Service intervals run from break-in through multi-year tasks. At the initial 50 hours you check clutch pedal free play and change the engine oil. Every 100 hours covers brake pedal free play, and every 200 hours adds brake system bleeding. Annual work includes replacing the air cleaner element, while the power steering hoses get replaced every two years.
What fluids and capacities does this machine require?
Each system takes a specific fluid and volume. Fuel is Diesel No. 2-D (above -10°C): 105 L (27.7 U.S. gal.) on the M7580/M8580 and 120 L (31.7 U.S. gal.) on the M9580. The engine crankcase holds 16.3 L (4.3 U.S. gal.) of SAE 30 above 25°C. Transmission oil runs 50 L (13.2 U.S. gal.) on the M7580/M8580 and 56 L (14.8 U.S. gal.) on the M9580, using Kubota UDT Oil.
How to troubleshoot engine won't start?
A no-start usually comes down to no fuel, air in the fuel system, or a clogged fuel filter; the fixes are to replenish fuel, bleed the air, or clean and replace the filter. When the starter itself won't turn, suspect a discharged battery, a failing starter, or a bad starter relay. Charge the battery or repair and replace the faulty part, following the page references such as S.9-9 to 12 for battery work.
What are the hydraulic system specifications?
These specs cover pump delivery and relief valve settings. The auxiliary control valve relief is set to 17.7 to 18.1 MPa (180 to 185 kgf/cm2, 2560 to 2630 psi), while the 3-point hitch system relief runs 19.1 to 19.6 MPa (195 to 200 kgf/cm2, 2770 to 2840 psi). Pump delivery on the auxiliary side measures 19.4 cc/rev.
What format is this Kubota M7580, M8580, M9580 manual in?
This is a 561-page searchable PDF, available to download the moment checkout completes. It opens on a laptop, tablet, or phone, so you can carry it onto the shop floor.
Am I able to print pages from this Kubota M7580, M8580, M9580 manual?
None at all. The PDF is DRM-free, so print whatever sections you want to carry to the shop. Standard letter or A4 paper both work.
Are there wiring harness diagrams in this Kubota M7580, M8580, M9580 manual?
Yes. You'll find full electrical schematics with wire routing diagrams, connector identification, and circuit descriptions.
Document Quality
This document is a scanned PDF with an OCR layer, allowing you to search and select text. The text quality is generally crisp and readable throughout. Diagrams and illustrations are primarily raster images, which means they may show some pixelation when zoomed in, but their labels are mostly clear. Pages are clean with minimal scan artifacts, though a few pages exhibit slight skewing. There are no notable blank or filler pages.
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