This is the factory workshop manual for the Daedong DK45S and DK451 tractors, built around the 4A220B diesel engine. It runs 379 pages with a full searchable text layer and detailed bookmarks, and it covers the tractor chapter by chapter through every major system.Coverage spans the engine, clutch, transmission with shuttle shift, rear and front axles, brakes, the steering system, the hydraulic system, the cabin heater and air conditioner, and the electric system with its starting, charging, and glow plug circuits. Specifications, tightening torques, and troubleshooting are included throughout.Whether you own a DK45S or DK451, sold under the Kioti and Daedong names, this manual gives you the identification, factory specs, and step-by-step disassembly and assembly procedures to trace a fault and set the repair back to specification with confidence.
What's Inside This Kioti DK45S, DK451 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 1-57 | Tractor Identification, Tractor View, General Precautions, Specifications, Safety Decals |
| Engine | 58-115 | Lubricating System, Cooling System, Fuel System, Engine Body, Tightening Torque, Engine Disassembled View |
| Clutch | 116-130 | Specifications, Tightening Torques, Special Tools, Adjustment of Pedal, Disassembling and Assembly of Clutch, Inspection and Repair |
| Transmission System | 131-192 | Power Train Diagram, Power Train, Transmission Shift Linkage Structure, Shuttle Shift, Specifications, Tightening Torques |
| Rear Axle | 193-202 | Structure, Troubleshooting, Tightening Torque, Disassembling Rear Axle, Maintenance |
| Brake | 203-214 | Chapter 6 Brake, Check, Disassemblying And Maintenance |
| Front Axle | 215-240 | Chapter 7 Front Axle, Check, Disassemblying And Maintenance |
| Steering System | 241-264 | Chapter 8 Steering Sysytem (Structure, Troubleshooting, Specification, Disassembling and Maintenace) |
| Hydraulic System | 265-312 | Hydraulic Oil Flow Shematic, Hydraulic Pump, Power Steering System, PTO Clutch Valve System, Joystick Valve, Hydraulic Lift System |
| Cabin System | 313-333 | Heater, Air-Conditioner, Troubleshooting, Inspection and Adjustments |
| Electric System | 334-379 | Starting System, Charging System, Engine Glow Plug System, PTO System, Air Conditioning System, Heater System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Cylinder head screws torque | 103.0 ~ 107.9 N·m (10.5 ~ 11.0 kgf·m, 75.9 ~ 79.6 lbf·ft) | p. 72 |
| Wheel lug nut (1) torque | 17 ~ 19 kgf·m (167~186 N·m, 123~137 lbf·ft) | p. 36 |
| Wheel lug nut (2) torque | 28 ~ 32.5 kgf·m (275 ~ 319 N·m, 203 ~ 235 lbf·ft) | p. 36 |
| Clutch pedal Free Play | 20 ~ 30 mm (0.79 ~ 1.18 in.) | p. 120 |
| Clutch disc spline boss to shuttle shaft Backlash (Allowable Limit) | 2.0 mm (0.079 in.) | p. 120 |
| Clearance in joint between safe starting switch and clutch pedal (B) | 2 ~ 5 mm (0.079 ~ 0.197 in.) | p. 121 |
| Air cleaner element replacement interval | Once yearly or after every sixth cleaning, whichever comes first | p. 38 |
| Fan belt tension (deflection) | 8 mm (0.32 in.) | p. 40 |
| DK45S | ||
| Battery TYPE | 1231PMF | p. 41 |
| DK451 | ||
| Battery TYPE | DF80D | p. 41 |
| Cabin model | ||
| Air conditioner belt tension (deflection) | 10~12mm (0.39~0.47 in.) | p. 45 |
Kioti DK45S, DK451 Common Problems This Manual Covers
No-start or intermittent starting
An engine that will not start or starts only intermittently often traces to the safety start switch, a weak battery, or the starting circuit rather than the engine. The Electric System section covers the starting system and its troubleshooting.
Manual Section: Electric System p. 334Clutch slip or poor engagement
Poor clutch engagement, slip, or an inability to transmit power usually comes back to pedal free play out of specification or a worn clutch. The Clutch section covers pedal adjustment, disassembly, inspection, and repair.
Manual Section: Clutch p. 116Hard shifting or loss of drive
Hard shifting, grinding, or a loss of drive points to transmission adjustment, low or contaminated fluid, or internal wear in the shuttle or gearbox. The Transmission System section covers the power train, troubleshooting, and service.
Manual Section: Transmission System p. 131Rear axle noise or binding
Noise, binding, or abnormal drivetrain behavior from the rear can be a lubrication issue or internal component wear. The Rear Axle section covers the structure, troubleshooting, and disassembly and maintenance.
Manual Section: Rear Axle p. 193Overheating or loss of power
Overheating, rough running, or a loss of power is commonly a cooling restriction, a fuel system issue, or a blocked air intake. The Engine section covers the cooling and fuel systems along with engine troubleshooting.
Manual Section: Engine p. 58Weak steering or hydraulics
Heavy steering or slow, weak lift usually points to low or contaminated fluid, a relief pressure fault, or a worn pump. The Hydraulic System section covers the pump, power steering system, joystick valve, and lift system.
Manual Section: Hydraulic System p. 265Frequently Asked Questions
Which tractors does this manual cover?
It covers the Daedong DK45S and DK451 tractors, also sold under the Kioti name, both powered by the 4A220B diesel engine.
What is the cylinder head bolt torque?
The cylinder head screws torque to 103.0 to 107.9 Nm (75.9 to 79.6 lbf-ft). The Engine section lists the head torque and the rest of the engine specifications. p. 58
What is the clutch pedal free play?
Clutch pedal free travel is 20 to 30 mm. The Clutch section covers the pedal adjustment along with clutch inspection and repair. p. 116
Does it include the wiring and electrical system?
Yes. The Electric System section covers the starting, charging, glow plug, PTO, air conditioning, and heater circuits for these tractors. p. 334
How will I receive this Kioti DK45S, DK451 Workshop Manual?
Right after checkout, download the 379-page searchable PDF and open it on a laptop, tablet, or phone, then bring it straight to the shop floor.
Is this Kioti DK45S, DK451 Workshop Manual printable?
Yes. The PDF carries no DRM, so you can print any page or section your shop needs on any standard printer.
Can I find wiring schematics in this Kioti DK45S, DK451 manual?
Yes, they're in here: full wiring harness diagrams, electrical circuits, and connector pinouts.
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