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 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, M-90 | 16.3 L (17.2 U.S.qts., 14.3 Imp.qts.) | p. 10 |
| Transmission case capacity, M-90 | 55 L (58.1 U.S.qts., 48.4 Imp.qts.) | p. 10 |
| Front axle differential case capacity, M-90 | 6 L (6.3 U.S.qts., 5.3 Imp.qts.) | p. 10 |
| Fuel tank capacity, M-90 | 150 L (39.7 U.S.gals., 33 Imp.gals.) | p. 10 |
| M-110, M-120 | ||
| Engine crankcase capacity (M-110, M-120) | 20.8 L (22.0 U.S.qts., 18.3 Imp.qts.) | p. 10 |
| Transmission case capacity (M-110, M-120) | 58 L (61.3 U.S.qts., 51.0 Imp.qts.) | p. 10 |
| Fuel tank capacity (M-110, M-120) | 200 L (52.9 U.S.gals., 44 Imp.gals.) | p. 10 |
| M-110 | ||
| Front axle differential case capacity, M-110 | 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 (M-90, M-110) | 3.5 L (3.7 U.S.qts., 3.1 Imp.qts.) | p. 10 |
| M-120 | ||
| Front axle gear case for each side capacity, M-120 | 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 |
