Specs from the 1982 Honda Brochure Engine Type Three valve, Vertical Twin, OHC Displacement 447 CC Bore & Stroke 75 x 50.6 mm Compression Ratio 9.1:1 Carburation Two, 33 mm, CV Type Transmission Six Speed, Constant Mesh Exhaust System Two-into-Two with Power Chamber Clutch Wet, Multi-Plate Brakes Front: Slotted Disc, Double Piston Caliper Rear: Drum Suspension Front: Air Assisted, Telescopic. Rear: Swing Arm Tire Size Front: 3.60 S19. Rear: 4.10 S18 Wheels Reversed Spoke Comstar Ignition System C.D.I. Starting System Electric Gas Type Regular Wheelbase 1390 mm (54.7 in.) Dry Weight 171 Kg. (376.9 lbs.) Overall Length 2085 mm (82.1 in.) Overall Width 805 mm (31.7 in.) Seat Height 790 mm (31.1 in.) Fuel Capacity 13 litres (2.86 imp. gal.) (3.43 US gal.) Colors Black or Silver Metallic Specs from the Clymer Manual Make & Model Honda CB450T Hawk Years 1982 Tires Front Tire 3.60 x 19 Front Tire Pressure 28 psi, 2.0 kg/sq. cm Rear Tire 4.10 x 18 Rear Tire Pressure 28 psi, 2.0 kg/sq. cm - up to 206 lbs. 36 psi, 2.5 kg/sq. cm - up to vehicle load limit Replacement Light Bulbs Headlight 12V 50/35W Tail/Brakelight SAE 1157 Front Directional Light SAE 1034 Rear Directional Light SAE 1073 Instrument Lights SAE 57 Maintenance & Tune-Up Torque Specs Oil filter cover bolt 29-31 N-m, 21-22 ft.-lb. Oil drain bolt 25-35 N-m, 18-25 ft.-lb. Fork cap bolt 15-30 N-m, 11-22 ft.-lb. (air assist models) Fork bridge bolts Upper - 9-13 N-m, 7-9 ft.-lb. Lower - 18-25 N-m, 13-18 ft.-lb. Front fork interconnecting air hose Air connector-to-fork cap bolt and Air hose-to-fork cap bolt, 4-7 N-m, 3-5 ft.-lb. Air hose-to-connector, 15-20 N-m, 11-14 ft.-lb. Handlebar holder bolts 18-25 N-m, 13-18 ft.-lb. Rear axle nut 68-100 N-m, 50-72 ft.-lb. Fuel strainer cup 3-5 N-m, 2-4 ft.-lb. (models so equipped) Balancer chain 8 mm adjust nut - 20-24 N-m, 15-18 ft.-lb. Adjuster plate 8 mm nut  - 20-24 N-m, 15-18 ft.-lb. 10 mm nut - 30-35 N-m, 22-25 ft.-lb. Cylinder head bolts 30-35 N-m, 22-25 ft.-lb. Tune-Up Specs Valve Clearance 0.08 - 0.12 mm (0.003 - 0.005 in.) - Intake 0.12 - 0.16 mm (0.005 - 0.006 in.) - Exhaust Compression Pressure 1,172 - 1,368 kPa (171 - 199 psi) Spark Plug Type ND X24ESR-U or NGK DR8ES-L Spark Plug Gap 0.8 - 0.9 mm (0.032 - 0.036 in.) Idle Speed 1,200, + or - 100 rpm Oil Capacity Engine Oil 2.6 U.S. qt., 2.5 liter - Oil drain 3.2 U.S. qt., 3.0 liter - Rebuild Front Fork Oil 172 cc, 5.8 fluid oz. Drive Chain Chain Type 530 x 100 Chain Replacement Number DID 50DS-100L or RK 50KS-100L Front Sprocket 16T Rear Sprocket 36T Battery YB12A-A Clymer Manual for the CB450T Hawk Honda 400-450cc Twins, 1978-1987 Service, Repair & Maintenance Tune-up and routine maintenance Engine, clutch and transmission Fuel and exhaust, Ignition system Steering and suspension Wheels, brakes and tires Frame and body Electrical system, Wiring Diagrams