Part of the Kubota Repair Manuals.
This Kubota Workshop Manual covers the SM-E4 series diesel engines, Kubota's Super Mini E4 family, across 254 searchable pages. The specification tables list variants such as the Z482-E4 and D902-TE4, so you can match the data to the engine on your bench.
The manual is organized into Safety, General, Maintenance, and a large Engine section. The General part documents special tools and working precautions, Maintenance gives the full service check list by hour interval, and the Engine part carries the mechanism descriptions plus servicing specifications, tightening torques, and allowable limits.
With it you can check compression, set valve clearance, torque fasteners to the correct figures, and diagnose starting, cooling, and fuel faults to factory tolerances. It is written for owners, service shops, and rebuilders maintaining these compact Kubota diesels.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 15-19 | Working Precautions, Preparing for Emergencies, Working Cautions, Starting Machine Safely, Preventing Fires, Preventing Acid Burns, Avoiding High Pressure Fluid |
| General | 20-54 | Special Tools (Diesel Engine Compression Tester, Compression Tester Adapter H, Oil Pressure Tester, Injection Pump Pressure Tester, Valve Guide Replacing Tool, Bushing Replacing Tools, Flywheel Stopper, Crankshaft Bearing 1 Replacing Tool) |
| Maintenance | 55-85 | Maintenance Check List |
| Engine | 86-254 | Mechanism (Feature of Combustion, Structure of E-Tvcs, Flow of Combustion, Control of Combustion) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Tightening torque M6 (No-grade or 4T) | 7.8 to 9.3 N·m, 0.80 to 0.94 kgf·m, 5.8 to 6.8 lbf·ft | p. 155 |
| Tightening torque M8 (No-grade or 4T) | 17.7 to 20.6 N·m, 1.81 to 2.10 kgf·m, 13.1 to 15.1 lbf·ft | p. 155 |
| Engine Oil Capacity (Z482-E4, 101 mm pan depth) | 2.1 L | p. 30 |
| Engine Oil Capacity (D902-TE4) | 3.7 L | p. 35 |
| Compression Ratio (Z482-E4) | 23.5: 1 | p. 30 |
| Fuel Injection Pressure (Z482-E4) | 13.73 MPa | p. 30 |
| Valve Clearance (Cold) | 0.145 to 0.185 mm | p. 77 |
| Radiator Capacity | 2.0 L | p. 131 |
| Fan Belt Tension (Adjusting) | 200 to 300 N | p. 152 |
| Crankshaft Screw Tightening Torque (M12 x 1.5) | 117.7 to 127.5 N·m | p. 156 |
| Glow Plug Resistance | Approx. 1.1 Ω | p. 153 |
| Thermostat Valve Opening Temperature | 69.5 to 72.5 °C | p. 152 |
