Part of the Yanmar Repair Manuals.
All 239 pages of this Yanmar EF494T Technical Manual (pub. 0B040-G02300) zero in on one machine: your diesel tractor, from front axle alignment to hydraulic lift unit reassembly. Inside, you get full hydraulic circuit diagrams with complete fluid routing, electrical wiring schematics covering the start, charging, alarm, and safety circuits, plus a dense torque section with values across every major fastener. Adjustment specs are baked into each system chapter: clutch pressure plate torque runs 23-29 N-m (16.6-21.7 lb-ft), and wheel bolts go to 177-196 N-m (130-145 lb-ft). Replace your fuel filter every 300 hours or 6 months.
Complete the set for your EF494T
- Operator Manual: Yanmar EF494T Diesel Tractor Operator Manual
What's Inside This Yanmar EF494T Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Manual | 1 | |
| Safety | 2-8 | Safety-Alert Symbol, Signal Words, Precautions for the Safe Services, Handling Hazardous Materials, High Temperature and Pressure Systems, Tire and Rim Safety |
| Introduction | 9-29 | To the Owner, Maintenance, Supply Period for Maintenance Parts, Improvements, Symbol Indication, After Sales Service |
| Periodical Inspection | 30-48 | Check Intervals, Oil and Grease, Replacing Oil, Replacing Filter Elements, Replacing Cooling Water, Removing Water From Water Separator, Cleaning and Replacing Air Cleaner Element |
| Disassembly of Components | 49-71 | Removing the Engine Bonnet Cover, Removing the Fender, Removing the Seat Stay, Clutch Housing, Front Axle Unit |
| Engine | 72-125 | Fuel System, Combustion System, Lubricating Oil System, Cooling Water System, Adjustment Specifications |
| Clutch | 126-132 | Structure and Functions, Disassembly and Assembly |
| Transmission | 133-157 | Power Transmitting Diagram, Transmission System Cross-Section, Transmission System |
| Rear Axle and Brake | 158-166 | Rear Axle Housing, Differential Lock, Axle Shaft Assembly, Brake Adjustment, Brake Disassembly and Assembly |
| Front Axle | 167-175 | Structure and Functions, Cross-Section View, Front Wheel Alignment, Disassembling the Front Bearing Case, Disassembling and Assembling the Front Differential Section |
| Power Steering | 176-186 | Structure and Functions, Power Steering Valve |
| Hydraulic Lift Unit | 187-209 | Structure and Functions, Assembly and Check, Hydraulic Power Take Off |
| Electric Equipment | 210-233 | Engine Start Circuit, Charging Circuit, Alarm Circuit, Safety Circuit |
| Appendixes | 234-239 | Hydraulic Circuit Diagram, Electrical Diagram and Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Clutch pressure plate tightening torque | 23-29 N-m, 2.3-3.0 kgf-m, 16.6-21.7 lb-ft | p. 131 |
| Wheel bolt torque | 177-196 N-m (18.0-20.0 kgf-m, 130-145 lb-ft) | p. 71 |
| Battery type | 75D26R | p. 40 |
| Battery capacity (5HR) | 52AH | p. 40 |
| Fuel filter replacement interval | every 300 hours or 6 months, whichever is earlier | p. 90 |
| Engine oil element replacement interval | first 50 hours, then every 300 hours or every 2-3 times of replacing the engine oil | p. 35 |
| Air cleaner element replacement interval (dusty environment) | every 300 hours | p. 38 |
| Air cleaner element replacement interval (normal condition) | every 1000 hours | p. 38 |
| Thermostat valve opening temperature | 85°C | p. 101 |
| Thermostat valve fully open temperature | 95°C | p. 101 |
| Radiator cap normal pressure | 0.9 ±0.15 kgf/cm2 (12.8±2.1 lb/sq.in) | p. 103 |
| Starter motor part number | 129407-77010 | p. 215 |
