Kubota Z1300 is an 1.3 L (1,272 cc, 77.6 cu·in) natural aspirated two-cylinders four-stroke liquid-cooled internal combustion vertical diesel engine, manufactured by Kubota Corporation for general-purpose applications.
The cylinder bore and piston stroke are 90.0 mm (3.54 in) and 100.0 mm (3.94 in), respectively. Compression ratio rating is 21.5:1.
The Kubota Z1300 diesel engine produced 26.4 PS (19.4 kW; 26.0 HP) at 2,600 rpm of horsepower and 79.7 N·m (8.1 kg·m, 58.7 ft·lb) at 1,600 rpm of torque.
The Kubota Z1300 features:
Fuel injection pump Centrifugal ball mechanical governor Forced lubrication by pump Liquid cooling system Electric starter 12V, 2.0 kW Charging alternator General information Engine Specifications Engine model Z1300 Engine type 4-stroke, vertical, two-cylinders Displacement 1,272 cm3 , (77.6 cu·in) Max. horsepower 26.4 PS (19.4 kW; 26.0 HP) at 2,600 rpm Max. torque 79.7 N·m (8.1 kg·m, 58.7 ft·lb) at 1,600 rpm Cooling system Liquid-cooled Lubricating system Forced lubrication by pump Combustion chamber – Fuel system Fuel injection pump Injection type Indirect injection Fuel used Diesel fuel No.2-D Starting system Electric starter 12V, 2.0 kW Governor Centrifugal ball mechanical governor PTO shaft rotation Counterclockwise (from PTO shaft side) Dimensions (L x W X H) 400 x 455 x 554 mm (15.7 x 17.9 x 21.8 in) Dry weight 115.0 kg (253.5 lbs)
Cylinder Block and Head Cylinder block Compression ratio: 21.5:1 Cylinder bore: 90.0 mm (3.54 in) Piston stroke: 100.0 mm (3.94 in) Cylinder internal diameter (standard): 90.000 mm (3.5433 in) Piston skirt outer diameter (standard): 89.900-89.920 mm (3.5394-3.5402 in) Number of piston rings (compression / oil): 2/1 Piston pin diameter: 28.100 mm (1.1063 in) Side clearance (Second): 0.065-0.090 mm (0.0026-0.0035 in) Side clearance (Oil): 0.020-0.060 mm (0.0008-0.0024 in) Ring end gap (Top): 0.300-0.500 mm (0.0118-0.0197 in) Ring end gap (Second): 0.300-0.500 mm (0.0118-0.0197 in) Number of main bearings: 3 Crankshaft main journal diameter: 62.930-62.940 mm (2.4776-2.4779 in) Crankpin journal diameter: 58.760-58.800 mm (2.3134-2.315 in) Cylinder head Valves: 2, (4 valves in total) Valve seat width (INTAKE): 1.500 mm (0.060 in) Valve seat width (EXHAUST): 1.500 mm (0.060 in) Value seat angle (INTAKE): 45° Value seat angle (EXHAUST): 45° Valveface angle (INTAKE): 45° Valveface angle (EXHAUST): 45° Valve steam diameter (INTAKE): 8.960-8.975 mm (0.3528-0.3533 in) Valve steam diameter (EXHAUST): 8.960-8.975 mm (0.3528-0.3533 in) Valve spring free length (INTAKE): 47.5 mm (1.8701 in) Valve spring free length (EXHAUST): 47.5 mm (1.8701 in) Camshaft journal diameter (front bearing): 50.000-50.030 mm (1.9685-1.9697 in) Camshaft journal diameter (rear bearing): 32.000-32.030 mm (1.2598-1.261 in)
Tightening torque Tightening torque specs Cylinder head screw: 170.0-184.0 Nm (17.3-18.8 kgf·m; 125.5-135.8 lb·ft) Connecting rod screw: 58.0-64.0 Nm (5.9-6.5 kgf·m; 42.8-47.2 lb·ft) Flywheel screw: 110.0-115.0 Nm (11.2-11.7 kgf·m; 81.2-84.9 lb·ft) Idle gear shaft screws: 32.4-37.3 Nm (3.3-3.8 kgf·m; 23.9-27.5 lb·ft) Bearing case cover mounting screw: 49.0-68.4 Nm (5.0-7.0 kgf·m; 36.2-50.5 lb·ft)
Service Data Engine Maximum speed: 2,850 rpm Idle speed: 600-650 rpm Valve tappet gap Intake valve: 0.20-0.25 mm (0.0079-0.0098 in) Exhaust valve: 0.20-0.25 mm (0.0079-0.0098 in) Oil system Lubrication system: Forced lubrication Oil type: DS or DM Recommended oil: SAE 80 Oil capacity: 4.8 L (5.1 US. qt, 4.2 Imp. qt.) Fuel system Injection timing: 20° B.T.D.C. Fuel injection pressure 11.73 MPa (120 kgf/cm2 , 1700 psi) Cooling system Type: Pressurized radiator, forced circulation with water pump Coolant capacity: 6.9 liters (7.3 US.qts, 6.1 Imp. qts) Electrical system Battery: 12V, 110AH or equivalent
Applications Manufacturer or Brand Models Tractors Kubota L260
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The Kubota Z1300 is an 1.3 L (1,272 cc, 77.6 cu·in) natural aspirated two-cylinders four-stroke liquid-cooled internal combustion vertical diesel engine, manufactured by Kubota Corporation for general-purpose applications.
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