Part of the Kubota Repair Manuals.
This is the Kubota M90, M110 and M120 tractor Workshop Manual (publication 97897-12940), a 661-page PDF for mechanics servicing these mid-frame utility tractors. It documents the mechanism and the servicing of every major system, from the diesel engine through the driveline to the cab.Coverage runs across the whole machine: engine features and per-model servicing for the M-90 and the M-110 and M-120, clutch, rear axle, brakes, front axle, power steering, the hydraulic and three-point hitch system, the full electrical system with wiring diagram, and the cab air conditioning system.With it you can follow troubleshooting charts, set servicing specifications and tightening torques, adjust brake pedal free play, check engine oil pressure and valve clearance, and trace a fault through the wiring diagram. It is a downloadable, printable PDF, so you can work from the bench, a laptop or a phone.
What's Inside This Kubota M90, M110, M120 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Instructions | 3-9 | - |
| Dimensions | 13 | Overall Height, Overall Length, Wheel Base |
| General | 14-80 | Features, Tractor Identification, Handling Precautions for Electrical Parts and Wiring (Battery, Fuse, Connector, Handling of Circuit Tester), Lubricants, Fuel and Cooling Water |
| Engine | 81-106 | Features |
| Engine (M-90) | 107-166 | External Components, Separating Engine From Tractor, Engine Body, Lubricating System, Cooling System, Fuel System, Turbocharger |
| Engine (M-110 M-120) | 167-224 | Separating Engine From Tractor, Cylinder Head, Flywheel and Oil Pan, Timing Gear, Piston and Connecting Rod, Lubricating System, Cooling System, Fuel System |
| Clutch | 225-250 | Travelling Clutch (Features), PTO Clutch (Structure, Oil Flow, Valve, Shift Linkage), Troubleshooting, Servicing Specifications, Tightening Torques, Checking |
| Rear Axle | 357-367 | Features, Final Reduction System |
| Brakes | 368-391 | Features, Travelling Brake (Operation, Brake Body, Master Cylinder, Equalizer, Brake Oil), Parking Brake, Troubleshooting, Servicing Specifications, Tightening Torques, Checking |
| Front Axle | 392-431 | 2 Wheel Drive Type, 4 Wheel Drive Type, Front Wheel Alignment |
| Steering | 432-461 | Features, Power Steering Hydraulic Circuit, Power Steering System Hydraulic Pump, Steering Controller (Control Valve, Metering Device, Oil Flow), Flow Control Valve |
| Hydraulic System | 462-522 | Overall Construction of Hydraulic System, Three Point Hitch System (System Outline, System Construction, Control Outline) |
| Electrical System | 523-596 | Wiring Diagram, Starting System (Starter Motor, Intake Air Heater, Safety Starting System), Engine Key Switch Shut-Off System (Fuel Control Motor, Operation) |
| Cabin | 597-661 | Air Conditioning System (Air Conditioner Component, Principles of Air Conditioner, Outline of Air Conditioning System, Refrigeration System, System Control, Electrical System) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| M-90 | ||
| Engine crankcase capacity | 16.3 L (17.2 U.S.qts., 14.3 Imp.qts.) | p. 10 |
| Transmission case capacity | 55 L (58.1 U.S.qts., 48.4 Imp.qts.) | p. 10 |
| Front axle differential case capacity | 6 L (6.3 U.S.qts., 5.3 Imp.qts.) | p. 10 |
| Fuel tank capacity | 150 L (39.7 U.S.gals., 33 Imp.gals.) | p. 10 |
| M-110, M-120 | ||
| Engine crankcase capacity | 20.8 L (22.0 U.S.qts., 18.3 Imp.qts.) | p. 10 |
| Transmission case capacity | 58 L (61.3 U.S.qts., 51.0 Imp.qts.) | p. 10 |
| Fuel tank capacity | 200 L (52.9 U.S.gals., 44 Imp.gals.) | p. 10 |
| M-110 | ||
| Front axle differential case capacity | 7 L (7.4 U.S.qts., 6.2 Imp.qts.) | p. 10 |
| M-90, M-110 | ||
| Front axle gear case for each side capacity | 3.5 L (3.7 U.S.qts., 3.1 Imp.qts.) | p. 10 |
| M-120 | ||
| Front axle gear case for each side capacity | 4.6 L (4.9 U.S.qts., 4.0 Imp.qts.) | p. 10 |
| All Models | ||
| Engine coolant capacity | 13 L (3.4 U.S.qts., 2.86 Imp.qts.) | p. 10 |
| Brake oil capacity | 0.3 L (0.3 U.S.qts., 0.3 Imp.qts.) | p. 10 |
Kubota M90, M110, M120 Common Problems This Manual Covers
Hard or heavy power steering
Steering that feels heavy or wanders points to a worn steering controller, a weak hydraulic pump or a flow control fault. The Steering section covers the power steering hydraulic circuit, the pump and the control valve so you can isolate the cause.
Manual Section: Steering p. 432Weak brakes or wrong pedal free play
Spongy or uneven braking usually comes from incorrect pedal free play, air in the lines or worn friction parts. The Brakes section gives the free play spec and the travelling and parking brake servicing steps.
Manual Section: Brakes p. 368PTO clutch slipping or dragging
A PTO clutch that slips under load or will not fully release often has a worn disc or a sticking valve. The Clutch section documents the PTO clutch structure, oil flow, valve and the disc thickness limit.
Manual Section: Clutch p. 225Three-point hitch will not lift
A hitch that lifts slowly or not at all is usually a hydraulic pressure or control fault. The Hydraulic System section covers the overall hydraulic construction and the three-point hitch system outline and controls.
Manual Section: Hydraulic System p. 462Hard starting in cold weather
Slow or failed cranking can trace to the starter, the intake air heater or the safety starting circuit. The Electrical System section covers the starting system and the engine key switch shut-off system so you can test each part.
Manual Section: Electrical System p. 523Cab air conditioning not cooling
Weak or no cooling in the cab points to a low refrigerant charge or a fault in the air conditioner components. The Cabin section explains the air conditioning system, its refrigeration circuit and its electrical control.
Manual Section: Cabin p. 597Low engine oil pressure
Low oil pressure or noise on the M-90 warrants checking oil pressure against the rated-speed spec and inspecting valve clearance. The M-90 engine section holds the troubleshooting, servicing specifications and checking procedures.
Manual Section: Engine (M-90) p. 107Frequently Asked Questions
Which tractors does this manual cover?
It covers the Kubota M90, M110 and M120 tractors, with the engine servicing split so the M-90 and the M-110 and M-120 each get their own procedures where they differ.
Does it include the wiring diagram?
Yes. The Electrical System section contains the wiring diagram along with the starting system and the engine key switch shut-off system, so you can trace circuits end to end. p. 523
What engine information is included?
The manual covers the V4702-TL, F5802-TEI and F5802-TE engines. The Engine section gives their features, with detailed troubleshooting and servicing specs in the per-model engine chapters. p. 81
Does it cover the cab air conditioning system?
Yes. The Cabin section documents the air conditioning system, its components, the refrigeration circuit, system control and its electrical system. p. 597
Is this Kubota M90 manual a PDF I download?
It's a 661-page Workshop Manual in searchable PDF, available the moment checkout completes. Open it on a computer, tablet, or phone, with no shipping wait.
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