specs

CB750 K7: 1977

Production Dates June 1976 through May 1977
Production Numbers 38,000
Colors Candy Alpha Red, Excel Black
Features The gas tank stripe was gold with a white and red pinstripe. The “750 FOUR K” side cover emblem was gold.

Country Starting Engine# Starting Frame#
US 2700009 – 2729740 2700009 – 2729532
Canada 2709652 – 2728188 2709636 – 2728111
General Export KPH 2720001 – 2740319 2719942 – 2739004
General Export MPH 2732065 – 2732824 2731270 – 2732029
England 2719995 – 2736452 2719935 – 2735472
European Direct 2720004 – 2740102 2719941 – 2738818
France 2719999 – 2738337 2719939 – 2737053
Germany 2719997 – 2737988 2719937 – 2736904
Australia 2720003 – 2740319 2719944 – 2739038
Dimensions
Item English Metric
Overall length 89.8 in. 2,280 mm
Overall width 34.6 in. 880 mm
Overall height 46.7 in. 1,185 mm
Wheel base 58.9 in 1,495 mm
Seat height 31.9 in. 810 mm
Foot Peg Height 13.0 in. 330 mm
Ground Clearance 5.9 in. 150 mm
Curb weight (dry) 508 lb 231 kg

Frame & Suspension
Type Double cradle
Front Suspension Telescopic fork, travel 5.6 in., 141.5mm
Rear Suspension Swing arm, travel 4.0 in., 101.6mm
Front Tire Size, Type 3.50-19 (4PR) Rib, tire air pressure 2.0 kg/cm2, 28 psi
Rear Tire Size, Type 4.50-17A (4 PR) Block, tire air pressure 2.25/2.8 kg/cm2, 32/40 psi
Front Brake Disk brake
Rear Brake Internal expanding shoe
Fuel Capacity 5.0 US gal, 4.2 Imp. gal 19 liter
Fuel Reserve Capacity 1.1 US gal, 0.9 Imp. gal 4 liter
Caster Angle 62º
Trail Length 4.5 in. 115 mm
Front fork oil capacity (refill) 5.3-5.4 ozs 145-155cc

Engine
Item English Metric
Type Air-cooled, 4-stroke, O.H.C. engine
Cylinder Arrangement 4-cylinder in line
Bore and Stroke 2.402x2.408 in. 61.0x63.0 mm
Displacement 44.9 cu in 736 cc
Compression Ratio 9.2:1
Carburetor Four piston valve type, venturi diameter 28mm (1.102in)
Valve train Chain driven over head camshaft
Oil Capacity 3.7 US qt, 3.1 Imp. pt 3.5 liter
Lubrication System Forced pressure and dry sump
Fuel Required Low-lead gasoline with 91 octane number or higher
Air Filtration Paper filter
Intake Valve Opens: 0 degrees BTDC, Closes 40 degrees ATDC
Exhaust Valve Opens: 40 degrees BBDC, Closes 0 degrees ATDC
Valve Tappet Clearance Intake: 0.002in./0.05mm Exhaust: 0.003in./0.08mm
Pilot Screw Opening Fixed by idle limiter (1 1/2 +/- 1/2)
Idle speed 1000 rpm

Gear ratio V
Drive Train
Clutch Wet, multi plate type
Transmission 5-speed, constant mesh
Primary reduction1.708
Gear ratio I 2.500
Gear ratio II 1.708
Gear ratio III 1.333
Gear ratio IV 1.133
0.969
Final Reduction 2.733, drive sprocket 15T, driven sprocket 41T
Gear shift pattern Left foot operated return system

Electrical
Ignition Battery and ignition coil
Ignition Advance "F" mark: 10 degrees BTDC; Max Advance: 35 degrees; RPM from "F" to Max: 1,200-2,500; Dwell angle: 190 +/- 5 degrees
Starting system Electrical motor or kick pedal
Alternator Three phase A.C. generator 0.21kW@5,000 rpm
Battery Capacity 12V - 14AH
Fuse Capacity Main: 15A; Head: 7A; Tail: 5A
Spark plug USA: NGK D8ES-L, ND X24ES
Canada: NGK DR8ES-L ND X24ESR
Condenser Capacity 0.20-0.24 mf