This is the factory service manual for the Kioti (Daedong) EX35, EX40, EX45, and EX50 tractors, 610 pages covering service, repair, and troubleshooting for all four models in both mechanical and hydrostatic (HST) forms, powered by the 3B183, 4A200, 4A220, and 4B243 diesel engines.Inside you get identification and specifications, full engine service, clutch, mechanical transmission, the HST drive, rear and front axle work, brakes, power steering, the hydraulic system, and a detailed electrical section with wiring harness, fuse, and circuit-check guidance.Each chapter carries the torque values, clearances, and exploded views a technician needs, from the cylinder head screw torque to wheel nut figures and the maintenance schedule. Whether you are servicing the engine, tracing a weak loader, or chasing a PTO or electrical fault, this manual gives you the factory specifications and procedures. It downloads as a printable PDF you can keep on the shop computer or print by the page.
What's Inside This Kioti EX35–EX50 Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety First | 3-14 | For Safety (Alert Symbols) |
| General | 15-38 | Identification Number (Tractor Serial Number Location, Tractor Serial Number Assignment Standard, Engine Serial Number Location, Transmission Number, Engine Number Assignment Standard) |
| Engine | 39-138 | Engine Identification (Engine Epa Decal, Bar Code for Engine Number, Engine Number, Assignment Standard for Engine Model Code) |
| Clutch | 139-152 | Table of Contents, Specifications (Tightening Torques, Sealant), Operating Principle, Troubleshooting |
| Transmission 1 | 153-231 | Table of Contents, Specifications (Tightening Torque for Major Components, Sealant and Adhesive Specifications) |
| Transmission | 232 | Structure and Operating Principle, Structure (PTO Driving, Main Gear Shift Section, Shuttle Section, Range Shift Section, 4WD Section, Mid PTO) |
| HST | 233-270 | Table of Contents, Specifications (General, Major Tightening Torque), Operating Principle (Structure and Function of HST, Operation of HST), Troubleshooting |
| Rear Axle | 271-292 | Table of Contents, Specifications (Transmission Fluid, Tightening Torques) |
| Brake | 293-304 | Table of Contents, Specifications, Basic Operating Principle (Braking Force for Forward/Reverse Driving), Troubleshooting |
| Front Axle | 305-346 | Table of Contents, Specifications (Sealant and Adhesive, Tightening Torque for Major Components) |
| Steering | 347-378 | Table of Contents, Specifications (Steering Cylinder, Steering Unit, Tightening Torque for Major Components) |
| Hydraulic | 379-464 | Table of Contents, Specifications, Operating Principle (Schematic and Circuit Diagram, Operation), Troubleshooting |
| Electric | 465-598 | Table of Contents (Battery, Precautions When Inspecting and Servicing the Wiring Harness, Effective Troubleshooting for Electric Problems, Causes for Blown Fuse, Checking Circuits) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Front wheel bolt, wheel nut (M16) tightening torque | 196.1~225.6 Nm | p. 33 |
| Rear wheel nut (M16) tightening torque | 196.1~225.6 Nm | p. 272 |
| Cylinder head screws (M11 x 1.25) tightening torque | 103.0~107.9 Nm | p. 53 |
| Fuel filter element replacement | Replace | p. 31 |
| Fuel filter element type | paper type and is not reusable | p. 71 |
| Hydraulic filter change interval | Initial change after 50 hours, then change at every 400 hours | p. 391 |
| Hydraulic filter filtered dimension | 4,100 cm² ± 10% | p. 391 |
| Engine oil filter replacement | Replace | p. 31 |
| Oil filter paper fineness | Max. 99 ± 5 microns | p. 66 |
| Air cleaner element maintenance | Clean | p. 31 |
| Battery voltage | 12 V | p. 467 |
| Battery cold cranking ability | 630 A at -18°C | p. 467 |
Kioti EX35–EX50 Series Common Problems This Manual Covers
No start or cranks but will not fire
A fuel delivery issue, air in the fuel system, a clogged filter, a weak battery, or a glow-plug or starter fault leaves these tractors hard to start, especially in cold weather. The engine chapter covers the fuel and starting system diagnostics.
Manual Section: 3 Engine p. 39Weak or slow hydraulics
Low oil, a clogged suction or return filter, a worn pump, a suction leak, or a sticking valve leaves the loader and three-point hitch slow or unable to lift. The hydraulic chapter covers the filter specification, operating principle, and troubleshooting.
Manual Section: 11 Hydraulic p. 379Loss of drive or tractor will not move
Low transmission or hydraulic fluid, a clutch adjustment issue, a linkage fault, or an internal component failure leaves the tractor short on drive. The transmission chapter provides the specifications and the tightening torques for major components.
Manual Section: 5 Transmission 1 p. 153PTO will not engage or slips under load
Wet-clutch wear, a linkage adjustment problem, or low oil pressure in the PTO circuit leaves the PTO slow to engage or slipping. The clutch chapter covers the operating principle, tightening torques, and troubleshooting for the clutch and PTO drive.
Manual Section: 4 Clutch p. 139Weak or uneven braking
Worn or contaminated brake components and out-of-spec pedal free play reduce stopping power. The brake chapter covers the basic operating principle, specifications, and troubleshooting to restore even braking on both sides.
Manual Section: 8 Brake p. 293Heavy or jerky steering
A low fluid level, air in the system, or a worn steering pump or linkage makes the steering heavy or unresponsive. The steering chapter lists the steering cylinder and unit specifications and the tightening torques for major components.
Manual Section: 10 Steering p. 347Frequently Asked Questions
Which tractors does this manual cover?
It is the Daedong (Kioti) EX35, EX40, EX45, and EX50 service manual, covering all four models in mechanical and HST forms and their diesel engines across engine, drivetrain, hydraulic, and electrical systems in 610 pages.
Are wheel lug torque figures included?
Yes. The General chapter covers tire data and tightening torques, including the front and rear wheel bolt and nut values, so you can reseat wheels to the correct specification. p. 15
Does it give cylinder head bolt torque?
Yes. The Engine chapter documents the cylinder head screw torque along with the rest of the engine service specifications needed for a rebuild. p. 39
How do I get the manual after buying?
You download the PDF immediately after checkout. There is no shipping and no waiting, and the file stays yours to keep on your own devices.
How quickly can I access this Kioti EX35–EX50 Series manual after buying?
Checkout triggers an instant download of the 610-page searchable PDF. Open it on a laptop, tablet, or phone and carry it straight to the shop floor.
Are there any print restrictions on this Kioti EX35–EX50 Series manual?
There are none. Print single pages, whole chapters, or the full manual. This PDF ships completely unlocked.
Are there wiring harness diagrams in this Kioti EX35–EX50 Series manual?
Yes. Full electrical schematics are included, with wire colors, connector locations, and circuit descriptions.
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