1972-1975 Kawasaki Z1 Full Specifications Get to know the 1972-1975 Kawasaki Z1 in exquisite detail with our meticulously crafted motorcycle specifications tables.
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Performance 1972-1975 Kawasaki Z1 Performance Specifications Table Attribute Value Standing start 1/4 mile 12.0 seconds Climbing ability 30 o Fuel consumption 40 mpg (average) Braking distance 10.9728 m @ 31 mph Minimum turing radius 2,500 mm
Dimensions 1972-1975 Kawasaki Z1 Dimensions Specifications Table Attribute Value Overall length 2,250 mm Overall width 820 mm Overall height 1,175 mm Wheelbase 1,490 mm Ground clearance 160 mm Dry Weight 230 kg (without fuel and fluids)
Frame 1972-1975 Kawasaki Z1 Frame Specifications Table Attribute Value Frame type Tubular, double cradle Rake / Caster angle 64 ° Trail length 90 mm
Engine 1972-1975 Kawasaki Z1 Engine Specifications Table Attribute Value Power 82 HP @ 8,500 rpm Torque 54.3 FT-LB @ 7,000 rpm Engine capacity / displacement 903 cc Engine configuration DOHC 4-cylinder, transverse in-line 4-stroke, air-cooled Arrangement Transverse in-line Bore and Stroke 66 mm x 66 mm Compression ratio 8.5 : 1
Cylinder Head 1972-1975 Kawasaki Z1 Cylinder Head Specifications Table Attribute Value Cylinder compression 121 psi Cylinder head warpage 0.25 mm (service limit)
Valves and Springs 1972-1975 Kawasaki Z1 Valves and Springs Specifications Table Attribute Value Intake valve stem diameter 6.965 mm - 6.980 mm 6.86 mm (service limit) Intake valve stem bend 0.5 mm (service limit) Intake valve stem to guide clearance 0.02 mm - 0.05 mm 0.10 mm (service limit) Exhaust valve stem diameter 6.955 mm - 6.970 mm 6.85 mm (service limit) Exhaust valve stem to guide clearance 0.03 mm - 0.06 mm 0.10 mm (service limit) Intake valve spring free length 39.3 mm (outer spring) 38.0 mm (outer spring service limit) 36.0 mm (inner spring) 35.0 mm (inner spring service limit) Intake valve spring perpendicularity 1.9 mm (service limit) Exhaust valve spring free length 39.3 mm (outer spring) 38.0 mm (outer spring service limit) 36.0 mm (inner spring) 35.0 mm (inner spring service limit) Exhaust valve spring perpendicularity 1.9 mm (service limit)
Camshaft and Timing 1972-1975 Kawasaki Z1 Camshaft and Timing Specifications Table Attribute Value Intake valve cam timing opens @ 30° BTDC @ 1.0 mm lift closes @ 70° ABDC @ 1.0 mm lift Intake cam lobe height 36.26 mm - 36.34 mm 36.16 mm (service limit) Exhaust valve cam timing opens @ 70° BBDC @ 1.0 mm lift closes @ 30° ATDC @ 1.0 mm lift Exhaust cam lobe height 35.76 mm - 35.84 mm 35.66 mm (service limit) Camshaft run-out 0.10 mm (service limit)
Crankshaft 1972-1975 Kawasaki Z1 Crankshaft Specifications Table Attribute Value Crankshaft run-out 0.03 mm 0.10 mm (service limit)
Cylinder and Piston 1972-1975 Kawasaki Z1 Cylinder and Piston Specifications Table Attribute Value Cylinder bore diameter 66.000 mm - 66.019 mm (bore) 66.10 mm (bore service limit) Piston diameter 65.93 mm - 65.95 mm (outer) 65.80 mm (outer service limit) Top piston ring to groove clearance 0.045 mm - 0.080 mm 0.18 mm (service limit) Second piston ring to groove clearance 0.010 mm - 0.050 mm 0.15 mm (service limit) Piston pin diameter 16.994 mm - 17.000 mm 16.96 mm (service limit) Piston pin bore diameter 17.0035 mm - 17.0115 mm 17.08 mm (service limit) Top piston ring groove width 1.50 mm - 1.52 mm 1.60 mm (service limit) Second piston ring groove width 1.50 mm - 1.52 mm 1.60 mm (service limit) Top piston ring end gaps 0.2 mm - 0.4 mm 0.7 mm (service limit) Cylinder to piston clearance 0.060 mm - 0.079 mm Connecting rod big end side clearance 0.3 mm - 0.4 mm 0.6 mm (service limit)
Clutch and Primary Drive 1972-1975 Kawasaki Z1 Clutch and Primary Drive Specifications Table Attribute Value Reduction ratio 1.73 : 1 (97 / 56) Clutch type wet multi disc Clutch spring free length 33.8 mm 32.3 mm (service limit) Plate warpage 0.30 mm (service limit Friction plate thickness 3.7 mm - 3.9 mm 3.4 mm (service limit)
Transmission 1972-1975 Kawasaki Z1 Transmission Specifications Table Attribute Value Type 5-speed, constant mesh, return shift Gear ratio 1st gear = 3.17 : 1 (38 / 12) 2nd gear = 2.19 : 1 (35 / 16) 3rd gear = 1.67 : 1 (35 / 21) 4th gear = 1.38 : 1 (29 / 21) 5th gear = 1.22 : 1 (28 / 23)
Final Drive 1972-1975 Kawasaki Z1 Final Drive Specifications Table Attribute Value Final drive Chain drive Final drive ratio 2.33 : 1 (35 / 15) Chain type EK630S-TG endless-type Number of chain links 92 links Length of 10 links 165.5 mm
Lubrication 1972-1975 Kawasaki Z1 Lubrication Specifications Table Attribute Value System type Forced lubrication Oil capacity 3.3 litres (wet fill, includes filter) 4.0 litres (wet fill, excludes filter) 0.9 litres (tank volume) Recommended oil approval rating SE class Oil viscosity SAE 10W40
Fuel System 1972-1975 Kawasaki Z1 Fuel System Specifications Table Attribute Value Fuel tank capacity 18 litres
Carburetion 1972-1975 Kawasaki Z1 Carburetion Specifications Table Attribute Value Carburetor type VM 28SC Pilot jet 20 Main jet 112.5 Needle jet P-8 mm
Ignition System 1972-1975 Kawasaki Z1 Ignition System Specifications Table Attribute Value Ignition timing 1,500 rpm @ 5° BTDC to 3,000 rpm @ 40 ° BTDC Spark plug type NGK B-8ES
Front Suspension and Steering 1972-1975 Kawasaki Z1 Front Suspension and Steering Specifications Table Attribute Value Type Telescopic fork Front axel travel 140 mm Recommended front fork oil grade SAE 10W, non-detergent Oil level 455 mm (fork fully compressed, sping removed) Oil volume 169 ml (dry fill) Spring free length 495.5 mm 485 mm (service limit)
Rear Suspension 1972-1975 Kawasaki Z1 Rear Suspension Specifications Table Attribute Value Type Swing arm Rear axel travel 80 mm
Front Brake 1972-1975 Kawasaki Z1 Front Brake Specifications Table Attribute Value Front brake type Disc brake Front master cylinder diameter 14.000 mm - 14.043 mm (inner) 14.080 mm (inner service limit) Front master piston diameter 13.957 mm - 13.984 mm (outer) 13.900 mm (outer service limit) Front caliper cylinder A diameter 38.180 mm - 38.200 mm (inner) 38.215 mm (inner service limit) Front caliper piston A diameter 38.180 mm - 38.200 mm (outer) 38.105 mm (outer service limit)
Rear Brake 1972-1975 Kawasaki Z1 Rear Brake Specifications Table Attribute Value Rear brake type Internal expansion, leading-trailing Rear disc diameter 296 mm Rear disc thickness 7.0 mm 5.5 mm (service limit) Rear disc run-out 0.3 mm (service limit)
Wheels and Tyres 1972-1975 Kawasaki Z1 Wheels and Tyres Specifications Table Attribute Value Front wheel size 19 inch Front tyre size 3.25-19 4PR Front tyre pressure 26 psi (cold) Recommended front tyre Dunlop F6 Front wheel axle run-out 0.2 mm (service limit) Front wheel rim axial run-out 3 mm (service limit) Front wheel rim radial run-out 2 mm (service limit) Rear wheel size 18 inch Rear tyre size 4.00-18 4PR Rear tyre pressure 31 psi (cold) Recommended rear tyre Dunlop K-87 Rear wheel axle run-out 0.2 mm (service limit) Rear wheel rim radial run-out 3 mm (service limit) Rear wheel rim axial run-out 2 mm (service limit)
Electrical Charging 1972-1975 Kawasaki Z1 Electrical Charging Specifications Table Attribute Value Battery type Yuasa Battery voltage rating 12 volts DC
Electrical Equipment 1972-1975 Kawasaki Z1 Electrical Equipment Specifications Table Attribute Value Headlight 12V 50W/35W high/low beam Recommended headlight Semi-sealed Tail / stop light 12V 4/32 cp 8/23W Front turn signal light 12V 23W x 4 Rear turn signal light 12V 23W x 4 Neutral indicator 12V 3.4W Turn signal indicator 12V 3.4W High beam indicator 12V 3.4W Oil pressure indicator 12V 3.4W
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