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Kubota Z1100 Specifications

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• Kubota Z1100 Engine Specifications
• Kubota Z1100 Engine Troubleshooting

Engine Model ............... Kubota Z1100A
Engine Type ............... 4-cycle two-cylinder liquid-cooled diesel
Number of Cylinders ............... 2
Cylinder Bore, mm (in) ............... 88.0 (3.49)
Piston Stroke, mm (in) ............... 88.0 (3.49)
Displacement, L (cu.in) ............... 1.070 (65.3)
Rated 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
Cooling System ............... Liquid-cooled
Starting System .............. Electric starting with starter
Electrical System Rating, Volts ............... 12

Fuel System .............. Fuel injection
Governor Type .............. Mechanical
Timing Mark Location ............... Flywheel

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

Cylinder Sleeve Diameter, mm (in) ............... 87.9-87.92 (3.460-3.461)
Crankshaft Journal Diameter (flywheel), mm (in) ............... 80.020-80.039 (3.1504-3.1511)
Crankshaft Journal Diameter (timing gear), 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 Cam Gear, mm (in) ............... 0.07-0.15 (0.003-0.006)
Piston Pin Diameter, mm (in) ............... 28.1 (1.102)
Piston Pin Clearance, mm (in) ............... 0.029-0.053 (0.0011-0.002)
Piston Skirt to 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 to 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)

Valve Tappet Clearance (Cold), mm (in) ............... 0.20-0.25 (0.008-0.010)
Valve Stem Diameter (Intake), mm (in) ............... 8.96-8.975 (0.3527-0.3533)
Valve Stem Diameter (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)
Camshaft Journal Diameter (Flywheel), 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)

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)
Injection timing (BTDC), deg ............... 24
Injection pressure, MPa (psi) ............... 13.8 (2000)
Oil filter change interval ............... Every 200 hours
Oil change interval ............... Every 200 hours
Fuel filter change interval ............... Every 400 hours

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

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Gasoline and Diesel Engines Technical Data