Part of the Kubota Repair Manuals.
This 117-page Kubota T1400 and T1400H Workshop Manual is the factory service reference for these lawn tractors, powered by the GH400V-L engine. It splits every section into Mechanism and Servicing, so you can understand how a system works before you disassemble it.The manual covers both drive types: the T1400 with its speed variator and gear shift transmission, and the T1400H with hydrostatic transmission. It documents the engine, fuel system and carburetor, governor, clutch, power train and rear axle, brakes, front axle, steering, electrical system, and the mower deck, with servicing specifications, tightening torques, and a maintenance check list.Owners and independent mechanics can use it to rebuild the transmission, sort out a carburetor or charging fault, adjust the clutch and brakes, set the mower deck, or work through the wiring diagram. It is delivered as a downloadable PDF you can view on any device or print.
What's Inside This Kubota T1400, T1400H Manual
| System | Pages | Key Topics |
|---|---|---|
| Lubricating System | 9 | Oil Pump, Relief Valve, Rotor Lobe Clearance, Outer Rotor to Pump Body, Rotor and Cover, Engine Oil Pressure |
| Fuel System | 10-13 | Carburetor, Fuel Cut Off Solenoid, Float Chamber, Main Jet, Needle Valve, Pilot Screw |
| Governor | 14 | Governor Lever, Governor Spring, Governor Lever Shaft, Governor Sleeve, Governor Weight, Governor Gear |
| Clutch and Transmission | 15-20 | T1400H Type, T1400 Type |
| Power Train | 21 | Bevel Pinion Shaft, Bevel Gear, Shaft, Chain, Differential Gear, Rear Axle |
| T1400 Clutch | 22 | Tension Spring, Belt, Tension Arm, Clutch Rod, Tension Pulley, Clutch-Brake Pedal |
| Electrical System | 26-30 | Battery, Starting System, Charging System, Electrical Equipment |
| Lubricants and Fuel | 31-33 | Engine Crankcase, Hydrostatic Transmission, Transmission Case, Knuckle Shaft (King Pin), Mower Blade Axles, Fuel Tank |
| Servicing Specifications | 34-38 | Engine |
| Check and Maintenance | 42-47 | Battery Electrolyte Level, Mower Brake, Belt Tension, Engine Oil, Air Cleaner, Valve Clearance |
| Transmission and Rear Axle | 71-72 | T1400H Hydrostatic Transmission, T1400 Speed Variator and Gear Shift Transmission |
| Hydrostatic Transmission | 73-80 | Piston Pump, Piston Motor, By-Pass Valve, Charge Circuit, Oil Flow, Center Section |
| Transmission Case | 81-85 | Shift Rod, 2nd Shaft and 3rd Shaft, 12T Bevel Pinion Shaft, Differential Gear, Rear Axle |
| Separating Transmission and Rear Axle | 86-87 | T1400H Hydrostatic Transmission, T1400 Speed Variator and Gear Shift Transmission |
| Brake and Clutch | 92-98 | Checking and Adjusting, Disassembling and Assembling, Servicing |
| Front Axle | 99-100 | Checking and Adjusting, Disassembling and Assembling |
| Steering | 101-102 | Checking, Disassembling and Assembling |
| Mower | 112-117 | Checking and Adjusting, Disassembling and Assembling |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Drain plug torque | 19.6 to 29.4 N-m | p. 39 |
| Engine Starter B terminal nut torque | 8.8 to 11.8 N-m | p. 39 |
| Engine crankcase capacity | 1.4 L | p. 31 |
| Hydrostatic transmission capacity | 0.57 L | p. 31 |
| Maintenance Check List Daily (Each use) | Check the battery electrolyte level, Check and clean the grass catcher (Option parts), Check the mower brake | p. 41 |
| Maintenance Check List First 3 months or 20 hours | Check all belts, Check and readjust the mower deck belt tension, Check and readjust the drive belt tension, Check and readjust the brake pedal (T1400H type), Check and readjust the clutch-brake pedal (T1400 type), Check and readjust the parking brake (T1400H type), Check and readjust the parking brake (T1400 type), Grease all grease nipple | p. 41 |
| Engine Oil Capacity | 1.4 ℓ | p. 4 |
| Fuel Capacity | 8.5 ℓ | p. 4 |
| Spark Plug Gap (Factory Spec) | 0.9 to 1.0 mm | p. 36 |
| Engine Compression Pressure (Factory Spec) | 784 to 1078 kPa | p. 34 |
| Engine Oil Pressure (At maximum speed, Allowable Limit) | 29 kPa | p. 36 |
| Spark Plug Tightening Torque | 9.8 to 24.5 N-m | p. 39 |
Kubota T1400, T1400H Common Problems This Manual Covers
Weak or creeping hydrostatic drive
On the T1400H, worn piston pump or motor parts, a stuck by-pass valve, or low charge pressure show up as weak drive or a tractor that will not hold still in neutral. The hydrostatic transmission section covers the piston pump, motor, by-pass valve, charge circuit, and oil flow.
Manual Section: Hydrostatic Transmission p. 73Hard starting or flooding
Rough idle, flooding, or a no start on the GH400V-L usually comes from the carburetor float, main jet, needle valve, or the fuel cut off solenoid. The fuel system section covers the carburetor and its components in detail.
Manual Section: Fuel System p. 10Battery will not charge
A battery that goes flat between uses points to the charging or starting system. The electrical system section includes the wiring diagram and electrical circuit so you can test the charging output before replacing parts.
Manual Section: Electrical System p. 26Clutch slipping or dragging
Slipping drive or a clutch that will not fully disengage is common on belt driven lawn tractors and traces to belt tension, the tension pulley, or clutch adjustment. The brake and clutch section covers checking, adjusting, and servicing these parts.
Manual Section: Brake And Clutch p. 92Uneven cut or deck problems
An uneven cut, scalping, or deck vibration usually needs belt tension and deck leveling attention. The mower section covers checking and adjusting plus disassembly and assembly of the deck.
Manual Section: Mower p. 112Excessive steering play
Loose, wandering steering comes from wear in the steering gear and linkage. The steering section covers checking and the disassembly and assembly needed to restore it, with the allowable play limit in the servicing specifications.
Manual Section: Steering p. 101Frequently Asked Questions
Which tractors and engine does this manual cover?
It covers the Kubota T1400 and T1400H lawn tractors with the GH400V-L engine. The T1400 uses a speed variator and gear shift transmission, and the T1400H uses hydrostatic transmission; both are documented.
Does it cover the hydrostatic transmission rebuild?
Yes. The hydrostatic transmission section explains the piston pump, piston motor, by-pass valve, charge circuit, and oil flow, and it is separate from the T1400 gear shift transmission coverage. p. 73
Are torque specs and adjustments included?
Yes. The servicing specifications section gives factory specs and allowable limits, including tightening torques, engine compression, and clutch and brake settings. p. 34
What do I get after purchasing this Kubota T1400 manual?
A 117-page Workshop Manual in searchable PDF, ready the moment your checkout completes. Open it on a computer, tablet, or phone, with no shipping wait.
Am I free to print this Kubota T1400 Workshop Manual?
Yes. The PDF carries no DRM restrictions, so you can print any page or section you need for the shop. It works with any standard printer.
Can I trace hydraulic lines with this Kubota T1400 manual?
Yes. This Kubota T1400, T1400H Workshop Manual includes hydraulic system diagrams, circuit schematics, and component specifications.
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