Part of the Kubota Repair Manuals.
This is the Kubota Service Manual for the TG1860 and TG1860G garden tractors, a 332-page PDF built for full workshop repair. The TG1860 runs the D722-E-GX diesel and the TG1860G uses the WG590V gasoline engine, and the manual identifies each machine and calls out where their procedures differ.
It is organized into nine numbered sections: Engine, Transaxle, Brakes, Front Axle, Steering, Fender and Lift, PTO, Electrical, and Mower, ahead of a General section covering identification, lubricants, fuel, coolant, and tightening torques.
With this manual you can overhaul the diesel or gasoline engine, service the hydrostatic transaxle, adjust the brakes and steering, repair the electric PTO clutch, and read the full wiring diagrams. Cutting-height setup and blade service for the mower deck are covered in the final section, making it a complete reference for keeping the tractor running.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 13-64 | Features, Identification (Tg1860, Tg1860G), Handling Precautions for Electrical Parts and Wiring (Battery, Fuse, Connector), Lubricants, Fuel and Coolant (Tg1860 |
| Sect 1 Engine | 65-172 | Cooling System, Pressurized Lubrication System, Troubleshooting |
| Sect 2 Transaxle | 173-190 | Checking Hydrostatic Transaxle, Adjusting Neutral, Pedal Stopper, Separating Hydrostatic Transaxle, Disassembling Hydrostatic Transaxle, Assembling Hydrostatic Transaxle |
| Sect 3 Brakes | 191-196 | Brake Pedal Play, Brake Operation, Parking Lock Pedal, Brake Lock, Brake Spring and Brake Rod, Brake Assembly |
| Sect 4 Front Axle | 197-200 | Toe-In, Separating Front Axle Assembly, Rod End, Front Wheel and Tie Rod, Knuckle Arm and King Pin |
| Sect 5 Steering | 201-240 | Troubleshooting Based on Each Symptom, Troubleshooting Based on Error Code, Error Code 02, Error Code 03, Error Code 05, Error Code 06, Error Code 11, Error Code 12 and 13 |
| Sect 6 Fender and Lift | 241-246 | Inspecting Gas Spring, Cutting Height Adjusting Dial, Separating Fender, Suspension and Fuel Tank, Lift Linkage, Lift Lever |
| Sect 7 PTO | 247-256 | Electric PTO Clutch, PTO Belt, Bevel Gear Case, PTO Tension Pulley |
| Sect 8 Electrical | 257-320 | Wiring Diagram (:TG1860, :TG1860G, Wiring Diagram: TG1860G), Ignition System, Kra System, Servicing |
| Sect 9 Mower | 321-332 | Checking Mower Blade, Checking Mower Belt, Adjusting Cutting Height, Tension Spring Rod, Pulley Cover and Mower Belt, Center Blade Pulley, Blades and Holder |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| TG1860 | ||
| General Use Screws, Bolt and Nuts (M6, No-grade or 4T) | 7.85 to 9.31 N·m (0.80 to 0.95 kgf·m, 5.79 to 6.87 ft·lbs) | p. 23 |
| General Use Screws, Bolt and Nuts (M8, No-grade or 4T) | 17.7 to 20.5 N·m (1.8 to 2.1 kgf·m, 13.1 to 15.1 ft·lbs) | p. 23 |
| Engine Crankcase Capacity, TG1860 | 3.0 L (3.2 U.S.qts., 2.6 Imp.qts.) | p. 21 |
| Maximum gross power | 13.4 kW (18 HP) | p. 8 |
| All Models | ||
| Fuel Tank Capacity | 15 L (4.0 U.S. gals., 3.3 Imp. gals.) | p. 21 |
| Engine oil change interval | Every 100 hrs | p. 25 |
| Engine oil filter cartridge replacement interval | Every 200 hrs | p. 25 |
| Hydrostatic transmission capacity | 3.5 L | p. 21 |
| Mower cutting height | 25 to 102 mm (1.0 to 4.0 in.) | p. 9 |
| General use screws M8 (No-grade or 4T) torque | 17.7 to 20.5 N·m | p. 23 |
| TG1860G | ||
| Maximum gross power | 13.4 kW (18 HP) | p. 10 |
| Engine crankcase capacity, TG1860G | 1.7 L | p. 22 |
