All 443 pages of this Yanmar EG907 technical manual PDF (OEM #EG907PS, 05/2008 edition) cover one machine: your EG907 diesel tractor, from cabin separation and propeller shaft removal through high-efficiency diesel engine overhaul. Inside: wiring diagrams for every circuit (cell motor, charge, alarm, security, cabin), a general hydraulic circuit diagram with full fluid routing, a dedicated error code and problem diagnosis section, torque tables, and exploded views of the transmission, rear axle, and power steering cylinder. You also get the Universal Flat Operation chapter: electric and hydraulic control components, sensor adjustment procedures, and CAN meter diagnostics. Set fuel filter changes at 300 operating hours or 6 months, fill the engine to 12.0 L, and verify PTO valve solenoid resistance at 7.6Ω before closing up the rear axle. No more chasing electrical faults with a test light and no schematic. Bookmarked by system; search any spec by keyword and open it right on the shop floor.
What's Inside This Yanmar EG907 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 3 | Precautions for the Safe Services, Usage of the Liquid Gasket, Screw Tightening Torque Table, Fuse Box, Safety Label Location, International Symbols & Yanmar Symbols |
| Introduction | 13-38 | To the Owner, Important Warranty Information, Declaration of Conformity, Maintenance, Supply Period for Maintenance Parts, Improvements, Note, Symbol Indication |
| Periodical Inspection | 39-61 | Check Intervals, List of Oils, Greases and Antifreeze, List of Lubricants and Water Capacities, Equivalent Oil to Transmission Fluid Tf500, Maintenance Mode |
| Rough Disassembly of Components | 62-98 | How to Open/Close the Frontgrill and the Side Covers, Cabin Separation, Tilt Angle of the Tank, Propeller Shaft Separation, Separation at the Clutchhousing Section |
| Engine | 99-125 | Construction and Functions, Removing and Reinstallingthe Fuel Injection Pump |
| High- Efficiency Dieselengine | 126-187 | Construction and Functions, Control Outline, Precautions for Handling, Replacement Procedure Forthe Engine Governor Assembly, Problem Diagnosis |
| Transmission | 188-231 | Construction and Functions, Damper Disc, Main Clutch and Powerreverser, High/Low Shift, Dual Speed Turn/On-The-Go, Disassembly and Reassembly, Inspection and Adjustment |
| Front Axle | 232-237 | Construction and Functions, Disassembly and Reassembly |
| Rear Axle | 238-255 | Construction and Functions, Independent PTO, Disassembly and Reassembly |
| Power Steering | 256-275 | Construction and Functions, Removing or Reinstalling Thepower Steering Cylinder, Disassembling Andreassembling the Powersteering Cylinder |
| Universal Flat Operation | 276-327 | Outline, Inspection and Adjustment, Electric Control Components, Hydraulic Controlcomponents, Control Mode, Control Outline, Problem Diagnosis, Sensor Adjustment Procedure |
| Electric Equipment | 328-373 | CAN Meter, Cell Motor Circuit DiagramCharge Circuit Diagram Fuelcircuit Diagram, Alarm Circuit Diagram, Security Circuit Diagram, Cabin Circuit Diagram |
| Air Conditioner | 374-427 | Outline of the Air Conditioner, Operation and Handling, Construction, Operation Andcontrol, Checking and Maintenance, Refrigerant Filling, Troubleshooting, Parts List |
| Appendixes | 428-442 | General Hydraulic Circuit Diagram, General Circuit Diagram of the Electrical Components, Wire Harness, Lead Line |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel filter replacement interval | Every 300 operating hours or 6 months, whichever is earlier | p. 101 |
| Starter motor part number | 129900-77010 | p. 137 |
| PTO valve solenoid resistance | Approx. 7.6Ω | p. 250 |
| Hydraulic filter micron size | 35 micron | p. 429 |
| Engine Oil Capacity | 12.0 L | p. 42 |
| General Screw Tightening Torque (M12) | 44.10 - 58.80 N-m | p. 28 |
| Brake Pedal Play | 35-40 mm | p. 59 |
| Fan Belt Deflection | 5-7mm | p. 56 |
| Wheel Mounting Bolt Torque (Front/Rear) | 254-294 N-m | p. 61 |
| Power Steering Tie Rod Torque | 206-235 N-m | p. 262 |
Yanmar EG907 Common Problems This Manual Covers
Yanmar EG907 engine overheats under load or after a short run time p. 56
Inspect the cooling system components and test the belt tension manually. Press firmly on the belt mid-span and verify the fan belt deflection measures exactly 5-7mm as shown on page 56. Adjust the alternator bracket if the belt feels loose.
Manual Section: Periodical InspectionFront wheels wander at high speeds or steering feels loose during transport p. 262
Lift the front end and inspect the steering linkages for excessive play. Torque the power steering tie rod completely to 206-235 N-m as shown on page 262. Replace any worn ball joints if the linkage still shows movement after tightening.
Manual Section: Power SteeringLoss of power, rough running, or intermittent fuel starvation during heavy operation p. 101
Drain the water separator and inspect the main fuel delivery lines for kinks. Replace the fuel filter element on page 101, strictly observing the mandatory replacement interval of every 300 operating hours or 6 months. Bleed all trapped air before restarting.
Manual Section: EngineIndependent PTO fails to engage or slips intermittently while running heavy implements p. 250
Disconnect the harness connector at the rear housing and test the coil with a multimeter. Measure the PTO valve solenoid resistance and verify it reads approx. 7.6Ω as specified on page 250. Replace the solenoid cartridge if the coil is open.
Manual Section: Rear AxleTractor hydraulics are incredibly slow, feel weak under load, or fail completely p. 429
Drain the hydraulic reservoir and inspect the fluid for metal shavings or water contamination. Review the general hydraulic circuit diagram on page 429 and install a fresh 35 micron hydraulic filter. Refill the system with equivalent transmission fluid and cycle the cylinders.
Manual Section: AppendixesFrequently Asked Questions
How do I reset the maintenance reminder on the Yanmar EG907?
To reset the maintenance reminder, press the display select switch for more than three seconds to enter Maintenance setting mode. Select the interval to reset (e.g., Engine oil or Transmission oil), then press the display select switch again. "No, Yes" will be displayed with "No" highlighted — press again to confirm. The display will show "Time reset complete" after three seconds.
What is the cylinder head bolt tightening torque for the EG907?
The tightening torque for cylinder head bolts (M11×1.25) is 105 to 115 N·m (10.5 to 11.5 kgf·m). Always use a calibrated torque wrench and follow the tightening sequence specified in the engine reassembly section.
When should I replace the fuel filter on the Yanmar EG907 tractor?
Replace the fuel filter every 300 operating hours or every 6 months, whichever comes first. The manual states: "Replacement interval: Every 300 operating hours or 6 months, whichever is earlier."
How do I test the PTO valve solenoid on the EG907 Power Shuttle?
Measure resistance across the PTO valve solenoid terminals (1) and (2) with the solenoid cold. Specification: approximately 7.6Ω. The part number is CMP: 178076-02400. A reading outside this range indicates a faulty solenoid that should be replaced.
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