Part of the Yanmar Repair Manuals.
Searching for a Yanmar 4TNE98 service manual PDF that covers the full engine family? These 174 pages (OEM #HINSHI-H8013-R1) tackle all four variants: the 4TNE94, 4TNE98, 4TNE106, and turbocharged 4TNE106T, fitted to 5-ton mini-excavators and skid steer loaders. Inside: a full troubleshooting section with compression pressure procedures, page after page of torque tables, detailed clearance specs for cylinder bores, crankshaft, pistons, and gear backlash, plus exploded views and test value charts for the starting motor and alternator broken out by engine variant. A dedicated turbocharger section walks the 4TNE106T through disassembly, washing, inspection, and reassembly. Torque the injection pump drive gear nut to 83.3-93.1 N-m, then verify your 4TNE94/98 starter pulls no more than 140A at 11V unloaded. No more hunting specs from a faded decal. Jump to any section by keyword; download it and bring your tablet straight to the machine.
What's Inside This Yanmar 4TNE Series Manual
| System | Pages | Key Topics |
|---|---|---|
| Foreword | 0-1 to 0-2 | Purpose and Scope of Manual, Safety Notices |
| For Safe Servicing | 0-2 to 0-3 | Service Shop Safety, Working Wear, Tools, Genuine Parts, Bolt Torques, Electrical Parts, Waste Treatment |
| Precautions for Safe Servicing | 0-3 to 0-6 | Service Shop (Place), Working Wear, Tools to Be Used, Use of Genuine Parts Oil and Grease, Bolt and Nut Tightening Torques, Electrical Parts, Waste Treatment, Handling the Product |
| General | 12-25 | Engine Nomenclature, Specifications, Fuel Oil, Lubricating Oil and Cooling Water, Engine External Views, Structural Description |
| Troubleshooting | 26-31 | Quick Reference Table, Compression Pressure Measurement Method, Standard Compression Pressure, Engine Speed and Compression Pressure, Measured Value and Troubleshooting |
| Inspection and Adjustment | 32-47 | Oil Inspection, Cooling Water Inspection, Fan Belt Tension Inspection and Adjustment, Adjusting the Valve Clearance, Fuel Injection Valve Injection Pressure and Spray Pattern |
| Engine Body | 48-77 | Cylinder Head, Gear Train and Camshaft, Cylinder Block, Valve Seat Correction, Piston Pin Bushing Replacement, Oil Seal Replacement |
| Lubrication System | 78-79 | Lubrication System Diagram, Trochoid Pump Components, Disassembly, Servicing Points, Parts Inspection and Measurement |
| Cooling System | 80-81 | Cooling Water System, Cooling Water Pump Components, Disassembly, Servicing Points |
| Fuel Injection System /Governor | 82-91 | Fuel Injection Pump, Fuel Injection Valve, Fuel Feed Pump, Governor, Special Service Tools |
| Turbocharger(For 4TNE106T) | 92-111 | Structure and Functions, Service Standards, Periodic Inspection Procedure, Disassembly Procedure, Washing and Inspection Procedure, Reassembly Procedure |
| Starting Motor | 112-142 | Pinion and Drive Mechanism, Solenoid Switch, Brushes and Commutator, Armature Inspection, For 4TNE94/98, For 4TNE106(T) |
| Alternator | 143-164 | Charging Output Specifications, Voltage Regulator, Rotor and Stator Inspection, Rectifier Assembly, For 4TNE94/98, For 4TNE106(T) |
| Special Service Tools | 165-170 | Valve Guide Tool, Connecting Rod Bushing Replacer, Flex-Hone, Dial Gage, Micrometer, Torque Wrench |
| Service Standards | 171-174 | Idle Gear Shaft and Bushing, Backlash of Each Gear, Cylinder Inside Diameter, Crankshaft, Thrust Bearing, Piston and Ring |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Pump drive gear nut tightening torque | 83.3-93.1 Nm (8.5-9.5 kgf·m) | p. 85 |
| No-load Terminal voltage/current | 11/140 or less V/A | p. 116 |
| Loaded Terminal voltage/current | 2.5/1050 or less V/A | p. 116 |
| Hexagon Bolt (7T)/Nut M6 x 1 Tightening Torque | 9.8-11.8 Nm (1.0-1.2 kgf-m) | p. 25 |
