Part of the Kubota Repair Manuals.
This is the Kubota Workshop Manual for the E4B Series diesel engines: the Z482-E4B, Z602-E4B, D722-E4B, D782-E4B, and D902-E4B. It is the same 138 page factory service document Kubota supplies to its dealer technicians, covering engine identification, specifications, mechanism, and full servicing procedures.
You get the numbers that matter for a rebuild or a running repair: valve clearance, compression pressure, engine oil pressure, injection timing, and the complete tightening torque tables for both general and special use fasteners. The manual walks through troubleshooting, disassembly, checking, and reassembly with factory specifications and allowable limits.
Whether one of these engines runs in a compact tractor, a generator, or industrial equipment, this PDF lets you diagnose a fault, set clearances correctly, and torque everything back to spec. Download it once and keep it on a phone, tablet, or shop computer, and print any page you need at the bench.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Workshop Manual | 1-2 | WSM, Diesel Engine, Sm-E4B Series, Kubota |
| Information | 3-19 | |
| General | 20-58 | Engine Identification (Model Name and Engine Serial Number, Cylinder Number), Maintenance Check List |
| Mechanism | 59-63 | Engine, Contents, Engine Body (Half-Floating Head Cover, Closed Breather, Piston, Oil Pan), Cooling System (Cooling Fin) |
| Servicing Specifications | 65-72 | Troubleshooting |
| Cooling System | 73-82 | Tightening Torques, Fuel System, Lubricating System, Electrical System, Checking, Disassembling and Servicing, Tightening Torques for Special Use Screws, Bolts and Nuts |
| Electrical System | 83-92 | Fuel System |
| Gear Case and Timing Gears | 93-104 | External Components, Disassembling and Assembling |
| Flywheel and Crankshaft | 105-110 | Piston and Connecting Rod |
| Servicing | 111-119 | Alternator, Starter, Dynamo |
| Crankshaft | 120-130 | Timing Gears, Piston and Connecting Rod |
| Alternator | 131-138 | Starter, Oil Pump, Cylinder |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Z482-E4B | ||
| Engine oil capacity (Oil Pan Depth 101 mm / 3.98 in.), Z482-E4B | 2.1 L (0.55 U.S.gals) | p. 30 |
| Engine oil capacity (Oil Pan Depth 121 mm / 4.76 in.), Z482-E4B | 2.5 L (0.66 U.S.gals) | p. 30 |
| D722-E4B | ||
| Engine oil capacity (Oil Pan Depth 101 mm / 3.98 in.), D722-E4B | 3.2 L (0.85 U.S.gals) | p. 30 |
| Engine oil capacity (Oil Pan Depth 121 mm / 4.76 in.), D722-E4B | 3.8 L (1.0 U.S.gals) | p. 30 |
| All Models | ||
| Drain plug with copper gasket (M12 x 1.25) tightening torque | 33 to 37 N-m / 3.3 to 3.8 kgf·m / 24 to 27 lbf·ft | p. 77 |
| Drain plug with copper gasket (M22 x 1.5) tightening torque | 64 to 73 N-m / 6.5 to 7.5 kgf·m / 47 to 54 lbf·ft | p. 77 |
| Drain plug with rubber coated gasket (M22 x 1.5) tightening torque | 45 to 53 N-m / 4.5 to 5.5 kgf·m / 33 to 39 lbf·ft | p. 77 |
| Cylinder head cover screw tightening torque | 9.81 to 11.2 N-m / 1.00 to 1.15 kgf·m / 7.24 to 8.31 lbf·ft | p. 77 |
| Injection pipe retaining nut tightening torque | 25 to 34 N-m / 2.5 to 3.5 kgf·m / 18 to 25 lbf·ft | p. 77 |
| Overflow pipe retaining nut tightening torque | 20 to 24 N-m / 2.0 to 2.5 kgf·m / 15 to 18 lbf·ft | p. 77 |
| Nozzle holder assembly tightening torque | 49 to 68 N-m / 5.0 to 7.0 kgf·m / 37 to 50 lbf·ft | p. 77 |
| Glow plug tightening torque | 7.9 to 14 N-m / 0.80 to 1.5 kgf·m / 5.8 to 10 lbf·ft | p. 77 |
