1978 KZ 400 Standard

 
Identification    
 Letter designation    B1
 Color     Luminous copper, Candy persimmon red, Candy emerald green
 Frame #    K4-077801 ~
 Engine #  

 K4E118001 ~

     
Dimensions    

 Overall length

   2,045 mm

 Overall width

   810 mm

 Overall height

   1,130 mm
 Wheelbase    1,365 mm
 Road clearance    135 mm
 Dry weight    168 kg
 Fuel tank capacity    14 l
     
Performance     
 Climbing ability    24°
 Braking distance    13.5 m from 50 kph
 Minimum turning radius    2,300 mm
     
Engine     
 Type    SOHC, 2 cylinder, 4 stroke, air cooled
 Bore and stroke    64 mm x 62 mm
 Displacement    398 cc
 Compression ratio    9.5
 Maximum horsepower    36 hp @ 8,500 rpm
 Maximum torque    3.28 kg-m @ 7,000 rpm
 Valve timing    

 Inlet


Open

Closed

Duration 

 27° BTDC 

 73° ABDC 

 280°

 Exhaust


Open

Closed

Duration 

 70° BBDC 

 30° ATDC 

 280°

 Carburetors    (2) Keihin VB32
 Lubrication system    Wet sump
 Engine oil Type 

 SAE 10W40, 10W50, 20W40, 20W50

  Capacity  2.9 l
 Starting system    Electric starter and kick 
 Ignition system    Battery and coil
 Cylinder numbering method    
 Firing order    
 Ignition timing    From 10° BTDC @ 1,100 rpm to 35° BTDC @ 3,200 rpm
 Spark plugs    ND W22ES-U or NGK B7ES
     
Transmission     
 Type    6-speed, constant mesh, return shift
 Clutch    Multi-disc, wet
 Gear ratio 1st   2.54
  2nd  1.75
  3rd  1.32
  4th   1.10
  5th   0.96
  6th   0.88
 Primary reduction ratio    2.43
 Final reduction ratio    3.000
 Overall drive ratio    6.39
   
Electrical equipment     
 Alternator    Nippon Denso 5-037000-373
 Regulator/rectifier    Shindengen SH221-12
 Ignition coils    Nippon Denso 029700-3881
 Battery    Yuasa 12N 12A-4A-1 (12V 12AH), EU: Furukawa FB12A-A (12V-12AH)
 Starter motor    Mitsuba SM223
 Headlight Type   Sealed beam, EU: Semi-sealed
  Bulb   12V 50/35W, EU:12V 35/35W, F: 36/36W, G: 50/40W
 Tail/brake light    12V 8/27W, EU: 12V 8/21W
 City light    12V 4W
 Turn signal lights    12V 23W, EU: 12V 23W
 Meter lights    12V 3.4W
 Indicator lights    12V 3.4W
 Horn    12V 2.5A
     
Frame     
 Type    Tubular, double cradle
 Steering angle    41° to either side
 Castor    27°
 Trail    100 mm
 Tire size Front   3.00 - 18
  Rear   3.50 - 18
 Suspension Front   Telescopic fork
  Rear   Swing arm
 Suspension stroke Front   150 mm
  Rear   95 mm
 Front fork oil Type   SAE 5W20
  Capacity   145 ~ 155 cc each fork
  Oil level 
     
Brakes     
 Type Front   Single disc
  Rear   Internal expansion, leading-trailing
 Effective disc diameter Front   231 mm
 Brake drum inside diameter Rear   160 x 30 mm