Specifications, Service and Repair of Farm and Lawn Tractors

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Kubota Z1100 Engine

General Technical Data

Kubota Z1100 Engine Specifications

Engine Model .......... Kubota Z1100A
Engine Type .......... Vertical, 4-Stroke 2-Cylinder Diesel
Number of Cylinders .......... 2
Bore, mm (in) .......... 88.0 (3.49)
Stroke, mm (in) .......... 88.0 (3.49)
Displacement, cm3 (cu. in.) .......... 1070 (65.3)
Gross Power, kw (hp) .......... 15.5 (21.0)
Rated Speed, rpm .......... 2700
Slow Idle Speed, rpm .......... 600-650
High Idle Speed, rpm .......... 2850
Compression Ratio .......... 20:1
Firing Order .......... 1-2

Fuel System

Injection Timing (BTDC), deg .......... 24
Timing Mark Location .......... Flywheel
Injection Pressure, MPa (psi) .......... 13.8 (2000)

Electrical System

Battery, Volts .......... 12
Battery, Capacity, Amp/hr .......... 65
Ground Polarity .......... Negative

Dimensions

Length, mm (in.) .......... 397.0 (15.75)
Width, mm (in.) .......... 447.0 (17.74)
Height, mm (in.) .......... 543.0 (21.55)
Dry weight, kg (lbs.) .......... 92.0 (203)

Kubota Z1100 Maintenance Data

Fuel type .......... Diesel fuel No. 2-D
Engine oil type .......... SAE 80
Lubricant type .......... DS or DM
Engine oil capacity, L (qts) .......... 5.0 (5.3)
Coolant capacity, L (qts) .......... 6.84 (7.1)
Oil filter change interval .......... Every 200 hours
Oil change interval .......... Every 200 hours
Fuel filter change interval .......... Every 400 hours

Kubota Z1100 Service Specifications

Cylinder Block

Cylinder Sleeve Diameter, mm (in) .......... 87.9-87.92 (3.460-3.461)
Crankshaft Main Journal Diameter (flywheel end), mm (in) .......... 80.020-80.039 (3.1504-3.1511)
Crankshaft Main Journal Diameter (timing gear end), mm (in) .......... 60.011-60.024 (2.3626-2.3631)
Crankshaft Crankpin Journal Diameter, mm (in) .......... 53,951-53.970 (2.1240-2.1248)
Crankshaft Crankpin Journal, Bearing Clearance, mm (in) .......... 0.02-0.08 (0,0008-0.003)
Crankshaft Crankpin Journal Side Clearance, mm (in) .......... 0,4-0.6 (0.016-0.024)
Crankshaft End Play, mm (in) .......... 0.1 (0,004)
Backlash Between Crankshaft Gear and Camshaft Gear, mm (in) .......... 0.07-0.15 (0.003-0.006)
Camshaft Journal Diameter (flywheel side), mm (in) .......... 19.983-20.11 (0.787-0.792)
Camshaft Journal Diameter (gearcase side), mm (in) .......... 35.002-35.013 (1.3780-1.3784)
Backlash Between Two Gears In Timing Gear, mm (in) .......... 0.04-0.12 (0.0015-0.0045)
Piston Pin, Diameter, mm (in) .......... 28.1 (1.102)
Piston Pin, Clearance, mm (in) .......... 0.029-0.053 (0.0011-0.002)
Piston Skirt-Cylinder Clearance, mm (in) .......... 0.08-0.12 (0.003-0.0048)
Idle Gear Side Clearance, mm (in) .......... 0.20-0.50 (0.008-0.020)
Idle Gear Shaft-Idle Gear Bushing, Clearance, mm (in) .......... 0.020-0.05 (0.001-0.002)
Piston Skirt Diameter, mm (in) .......... 87.9-87.92 (3.460-3.461)
Piston Ring End Gap, mm (in) .......... 0.3-0.5 (0.012-0.020)
Second Compression Ring, Side Clearance, mm (in) .......... 0.065-0.09 (0.0025-0.0035)
Oil Control Ring, Side Clearance, mm (in) .......... 0.02-0.06 (0.0008-0.0024)

Cylinder Head

Valve Tappet Gap (Cold), mm (in) .......... 0.20-0.25 (0.008-0.010)
Valve Stem Diameter (Intake and Exhaust), mm (in) .......... 8.96-8.975 (0.3527-0.3533)
Valve Face Angle, degrees .......... 45
Valve Seat Angle, degrees .......... 45
Valve Seat Width, mm (in) .......... 1.5 (0.060)
Valve Springs Free Length, mm (in) .......... 47.5 (1.885)
Rocker Arm Shaft-Rocker Arm, Clearance, mm (in) .......... 0.02-0.08 (0.0008-0.003)

Tightening Torque Specs

Cylinder head screw, Nm (ft.-lbs) .......... 201-210 (148-155)
Connecting rod screw, Nm (ft.-lbs) .......... 58-64 (43-47)
Flywheel screw, Nm (ft.-lbs) .......... 109-116 (80-85)
Idle gear shaft screws, Nm (ft.-lbs) .......... 32.4-37.3 (23.9-27.5)
Bearing case cover mounting screw, Nm (ft.-lbs) .......... 49.0-68.6 (36.2-50.6)

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KUBOTA TRACTORS SPECIFICATIONS

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KUBOTA ENGINES DATA AND SERVICE SPECS

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KUBOTA FRONT END LOADERS

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KUBOTA TRACTORS TROUBLESHOOTING
L235 L2501 L2550 L275 L3110
L3301 L35 L3710 L3901 L4310
L5030 M4700 M5700 M6040 M6800
M8200 M8540 M9000 MX5100 MX5200