Need the factory maintenance schedules and control guides for your diesel tractor? This 70-page Yanmar EF312T, EF352T operator manual pdf breaks down every daily check, dashboard indicator, and fluid capacity for your machine. You get a full breakdown of cab controls, detailed 3-point hitch operations, and step-by-step guidance for safely engaging the hydraulic power take-off. Inside, you will also find a complete troubleshooting section covering the engine and power train, plus strict periodical service schedules to keep your equipment working hard. Plan to swap the fuel filter every 300 hours and lock down the rear wheel hub bolts to exactly 177-196 N-m. Stop relying on guesswork for routine maintenance. Grab this bookmarked download, open it on your phone out in the field, and get the job done right.
What's Inside This Yanmar EF312T, EF352T Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| To the Owner Note: | 3 | - |
| Symbol Indication | 4 | Safety-Alert Symbol, Stop Symbol, Iso Metric Design, Signal Words |
| Safety Instructions | 5-17 | - |
| After Sales Services | 18 | Tractor Model Name, Serial Number, Engine Model Name, Hour-Meter Reading, Operating Conditions, Availability of Spare Parts |
| Tractor Outline | 19 | Head Light, Fuel Refill Port, Operator's Seat, Front Tire, Rear Tire, ROPS (Safety Frame) |
| Parts Names | 20 | Main Switch, Accelerator Lever, Brake Pedal, Clutch Pedal, Differential Lock Lever, PTO Shift Lever |
| Label Locations | 21 | Caution Label, Danger Label, Fuel Label, PTO Cover Label, Brake Label |
| Controls | 22-29 | Engine, Travelling, PTO Re Related Functions, Hydraulic System, Electric System, Instrument Panel, Others |
| Operations | 30-45 | Pre-Operation Checks, Brake-In, Before Starting, Start and Stop (Engine, Start, Gear Shifting and Stop Tractor), Driving on a Road, Driving on a Slope, Driving in and Out of Fields |
| Opening Bonnet and Side Cover | 46 | Bonnet Opening, Bonnet Closing, Bonnet Lever, Bonnet Stand, Side Cover Opening, Side Cover Closing |
| After Operation | 47-65 | Check Intervals, Oil and Grease, Capacity of Oils and Water, Equivalent Oil to Transmission Fluid TF500A, Fuel Sytem, Oil and Filter, Engine Coolant, Bleeding Fuel Lines of Air |
| Troubleshooting | 66-68 | Engine, Electrical System, Hydraulic System, Power Train |
| Specifications | 69-70 | Engine, Dimension, Weight, Tire Size, Transmission, Hydraulic System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| General bolt tightening torque (Grade 7T) | M6: 8-12 N·m (0.8-1.2 kgf-m), M8: 23-30 N·m (2.3-3.0 kgf-m), M10: 44-59 N·m (4.5-6.0 kgf-m), M12: 78-98 N·m (8.0-10.0 kgf-m), M14: 118-147 N·m (12.0-15.0 kgf-m), M16: 167-206 N·m (17.0-21.0 kgf-m), M18: 235-284 N·m (24.0-29.0 kgf-m), M20: 323-402 N·m (33.0-41.0 kgf-m) | p. 45 |
| Front wheel hub bolt and nut tightening torque | 118 to 147 N·m (12 to 15 kgf-m) | p. 64 |
| Rear wheel hub bolt and nut tightening torque | 177 to 196 N·m (18 to 20 kgf-m) | p. 64 |
| Fuel filter replacement interval | Every 300 hours | p. 51 |
| Air cleaner element cleaning interval (dusty environment) | Every 50 hours or earlier | p. 56 |
| Air cleaner element replacement interval (dusty environment) | Every 400 hours or earlier | p. 56 |
| Radiator screen check interval | Before every work | p. 56 |
| Battery type | 80D26R or NX110-5MF | p. 58 |
| Battery voltage | 12 Volts | p. 58 |
| Transmission and hydraulic system oil type | Yanmar TF-500A Transmission fluid or equivalent | p. 50 |
| Transmission and hydraulic system oil capacity | 25 lit. | p. 53 |
| Engine overheating troubleshooting | Causes: Engine overloaded, Low coolant level, Loose or defective fan belt, Radiator screen or fins clogged, Cooling system needs flushing, Defective thermostat, Defective temperature gauge or sender. Remedies: Reduce load or shift to lower gear, Fill coolant and check cooling system for loose connections or leak, Adjust fan belt and replace if needed, Clean radiator screen or fins, Flush cooling system, Remove and check thermostat, See your YANMAR dealer. | p. 67 |
Yanmar EF312T, EF352T Common Problems This Manual Covers
Yanmar EF312T tractor starts but runs poorly or will not start after priming the fuel system p. 66
Check the troubleshooting steps on page 66. Verify the fuel tank holds up to its 28 liters capacity. Drain any water from the separator and replace the fuel filter if it has exceeded the replacement interval of every 300 hours on page 51. Bleed air from the lines completely.
Manual Section: Engine TroubleshootingEngine overheating and loss of cooling performance during heavy load operation in dusty field conditions p. 67
Reduce load or shift to a lower gear immediately. Inspect the radiator screen and fins for clogged debris as detailed on page 67. Clean the air cleaner element every 50 hours or earlier in dusty environments according to page 56. Check coolant level and adjust the fan belt.
Manual Section: Engine TroubleshootingImplement not raising or rear hitch dropping slowly when operating heavy attachments in the field p. 68
Inspect the hydraulic stop valve on page 68 and verify it is open. Ensure the system contains its full 25 lit. capacity as specified on page 53. Replace the hydraulic oil filter if clogged. Check all hydraulic rubber hoses for leaks or visible exterior damage.
Manual Section: Hydraulic System TroubleshootingWheel looseness, vibration, or rattling hardware discovered during routine daily walk-around inspection p. 64
Torque the front wheel hub bolts to 118 to 147 Nm using a calibrated wrench. Tighten the rear wheel hub nuts to 177 to 196 Nm as shown on page 64. Inspect the chassis daily and retighten any loose hardware to prevent wheel failure or vibration.
Manual Section: After OperationFrequently Asked Questions
How do I reset the YANMAR EF312T/EF352T PTO or safety interlock?
If the engine is hard to start because the PTO shift lever is not in neutral, the remedy is to set the lever to neutral. This action effectively resets the safety interlock that prevents the engine from starting when the PTO is engaged. Ensure the PTO shift lever is in the "N" position before starting the engine.
How do I reset the YANMAR EF312T/EF352T transmission or shuttle shift after a fault?
If the engine is hard to start because the reverser lever is not in neutral, the remedy is to set the lever to neutral. This action ensures the transmission's safety interlock is disengaged, allowing the engine to start. Always ensure the reverser lever is in the "N" position before starting the engine.
What does the warning light or indicator code mean on a YANMAR EF312T/EF352T?
The manual describes several pilot lamps: the Battery charge pilot lamp (5) lights when the key is ON and should turn off when the engine starts; if it doesn't turn off at 1500rpm or higher, see your dealer. The Engine oil pressure pilot lamp (6) lights when the key is ON and should go off when the engine starts; if it doesn't, stop the engine immediately and check the oil level. The Reverser lever neutral pilot lamp (7) lights when the reverser lever is in the "N" position.
What are the torque specs for the YANMAR EF312T/EF352T wheel lug nuts?
The tightening torque for the wheel hub bolts and nuts is specified. For the front wheel, the torque is 118 to 147Nm (12 to 15kgf-m). For the rear wheel, the torque is 177 to 196Nm (18 to 20kgf-m).
What are the replacement specifications for fuel filter?
The fuel filter should be replaced every 300 hours of operation. It is important to use a genuine filter, as the engine fuel injector has very fine holes, and low filtering efficiency may cause engine trouble.
What format is this manual in?
This is a 70-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Are there any print restrictions on this manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
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