Kawasaki KH400

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Kawasaki KH400
1976 Kawasaki KH400-A3
Manufacturer Kawasaki
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The Kawasaki KH400 was a 400cc, 2-stroke, street motorcycle manufactured by Kawasaki from 1976 through 1978. The KH400 was the successor to the Kawasaki S3.

Changes between the S3 and KH400 was in the lowering of horsepower, color, markings, carburetor settings, handlebar grips, and spark plug. A CDI ignition was added as well as water-resistant brake pads, and three-fuse system adopted.

1976 KH400-A3

  • Maximum Horsepower:
  • 38 HP @ 7,000 rpm
  • (W) 36 HP @ 7,000 spm
  • Spark Plug: NGK B8HS
  • Color
  • Fuel Tank: Dark Green, Orange
  • Front Fender: Chrome
  • Engine No.: S3EO26300-
  • Frame No.: S3F-26200-
  • Parts Catalogue No.: 99997-624-52S, (G) 99997-624-53S, (E) 99997-669 plus 99997-669-01R
  • Owner's Manual No.: 99997-878-00
  • Shop Manual No.: 99931-500-00
  • Major Changes: Model code change for the Kawasaki S3. Color, marking, carburetor setting, grips, and spark plug. CDI ignition system, locking tank cap,

1977 KH400-A4

1977 Kawasaki KH400-A4


  • Color
  • Fuel Tank: Candy Emerald Green, Candy
  • Royal Purple
  • Front Fender: Chrome
  • Engine No.: S3E033601-
  • Frame No.: S3F-033601-
  • Parts Catalogue No. : 99997-624-54S, (E) 99997-669-50S plus 99997-669-02R
  • Owner's Manual No.: 99932-003-00
  • Shop Manual No.: 99931-500-00
  • Major Changes: Color and marking.


1978 KH400-A5

1978 Kawasaki KH400-A5


  • Color
  • Fuel Tank: Candy Persimmon Red, Candy
  • Lime Green
  • Front Fender: Chrome
  • Engine No.: S3E042801-
  • Frame No.: S3F-042801-
  • Parts Catalogue No.: 99997-624-558, (E) 99997-669-51S
  • Owner's Manual No. : 99920-1024-00, (E) 99920-1015-00
  • Shop Manual No.: 99931-500-00
  • Major Changes: Color, marking, seat, and brake master cylinder.