Kubota ZL600

Kubota ZL600The 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 codeZL600
LayoutStraight-2, vertical diesel engine
Fuel typeDiesel fuel No.2-D
Displacement0.6 L, 577 cm3 (35.21 cu in)
Max. Horsepower12.6 PS (9.3 kW; 12.5 HP) at 2,700 rpm
Torque output33.0 N·m (3.3 kg·m, 24.3 ft·lb) at 2,000 rpm
Injection typeIndirect injection
Cooling systemLiquid-cooled
Fuel injection pump
Fuel nozzleDN12SD12
Starting systemElectric starting with 12V (0.8 kW) starter
Starting support deviceGlow plug in combustion chamber
GovernorCentrifugal ball mechanical governor
Power adderNone
Firing order1-2
Dimensions (L x W x H):

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 valve0.200-0.250 mm (0.0079-0.0098 in)
Exhaust valve0.200-0.250 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 oilCC or higher
SAE Viscosity NumberSAE 10W-30, 10W-40
Engine oil capacity2.0 liters (0.5 US gal, 0.4 Imp. gal)
Fuel system
Injection timing:26°B.T.D.C.
Injection nozzle pressure13.73 MPa (140 kgf/cm2, 1991 psi)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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