The Kubota ZL600 is a 0.6 L (577 cc, 35.21 cu.in.) naturally aspirated, water-cooled diesel engine manufactured by Kubota for B6000 tractors.
The Kubota ZL600 engine has a spherical type сombustion сhamber with glow plug, Bosch model PFR fuel injtction pump and DN12SD12 throttle type injection nozzle. The cylinder bore and the piston stroke are 70.0 mm (2.76 in) and 75.0 mm (2.95 in), respectively.
The ZL600 diesel engine produced 12.6 PS (9.3 KW; 12.5 HP) at 2,700 rpm of maximum output power and 33.0 N·m (3.3 kg·m, 24.3 ft·lb) at 2,000 rpm of peak torque.
The breakdown of the engine code is as follows:
- ZL – 2-cylinders
- 6 – Approximate displacement 600 cc
General information
| Engine Specifications | |
| Engine code | ZL600 |
| Layout | Straight-2, vertical diesel engine |
| Fuel type | Diesel fuel No.2-D |
| Production | – |
| Displacement | 0.6 L, 577 cm3 (35.21 cu in) |
| Max. Horsepower | 12.6 PS (9.3 kW; 12.5 HP) at 2,700 rpm |
| Torque output | 33.0 N·m (3.3 kg·m, 24.3 ft·lb) at 2,000 rpm |
| Injection type | Indirect injection |
| Cooling system | Liquid-cooled |
| Fuel injection pump | – |
| Fuel nozzle | DN12SD12 |
| Starting system | Electric starting with 12V (0.8 kW) starter |
| Starting support device | Glow plug in combustion chamber |
| Governor | Centrifugal ball mechanical governor |
| Power adder | None |
| Firing order | 1-2 |
| Dimensions (L x W x H): | – |
| Weight | – |
Cylinder block
| Cylinder block | ||
| Compression ratio: | – | |
| Cylinder bore: | 70.0 mm (2.76 in) | |
| Piston stroke: | 75.0 mm (2.95 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
Cylinder head
| Cylinder head | ||
| Valves: | 4 (2 valves per cylinder) | |
Maintenance data
| Valve clearance | |
| Intake valve | 0.200-0.250 mm (0.0079-0.0098 in) |
| Exhaust valve | 0.200-0.250 mm (0.0079-0.0098 in) |
| Cooling system system | |
| Coolant capacity: | 3.0 liters (3.2 US.qts, 2.6 Imp. qts) |
| Oil system | |
| Recommended engine oil | CC or higher |
| SAE Viscosity Number | SAE 10W-30, 10W-40 |
| Engine oil capacity | 2.0 liters (0.5 US gal, 0.4 Imp. gal) |
| Fuel system | |
| Injection timing: | 26°B.T.D.C. |
| Injection nozzle pressure | 13.73 MPa (140 kgf/cm2, 1991 psi) |
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