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Kawasaki S1

The Kawasaki S1 was a 250cc triple cylinder street motorcycle manufactured by Kawasaki from 1971 through 1975. The S1 was the smallest displacement member of the S-series of Kawasakis which were recognizable by the triple cylinder 2-stroke engines which proved successful after the introduction of the Kawasaki H1 "Mach III" in 1970.

1975-Kawasaki-S1B-Blue-9827-0.jpg
Kawasaki S1
Manufacturer
Production 73-75
Successor Kawasaki KH250
Engine
250cc
Spark Plug NGK B9HS '73 , '74-75
Battery YUASA 12N5-5-4A '74-75
YUASA 12N5.5-4A '73
Front Tire 3.00-18 '73 , '74-75
Rear Tire '73 , '74-75
Weight
Manuals Service Manual

Brochures ·

Contents

Major competitorsEdit

1971 S1Edit

 
1972 Kawasaki S1


  • 250 cc
  • 2-Stroke, 3 Cylinder
  • Piston Inlet Port
  • 5-Speed Return Shift
  • Maximum Horsepower:
  • 28 HP @ 7,500 rpm
  • Spark Plug: NGK B9HS
  • Tire Size
  • Front: 3.00s-18 4PR
  • Rear: 3.25s-18 4PR
  • Color
  • Fuel Tank: Pearl White, Pearl Candy Red
  • Front Fender: Same as fuel tank
  • Engine No.: S1E00001-
  • Frame No.: S1F-00001-
  • Parts Catalogue No. : 99997-513 plus 99997-536S, (E) 99997-513 plus 99997-535S
  • Owner's Manual No.: 99997-504
  • Shop Manual No.: 99997-705
  • Remarks: Two-stroke, triple-cylinder engine. Separate handlebar holder, steering friction damper, and drum front brake will provide positive identification.


1973 S1AEdit


  • Color
  • Fuel Tank: Candy Orange, Candy Blue, Candy
  • Gold
  • Front Fender: Chrome
  • Engine No. : S1 E05494-
  • Frame No.: S 1 F-0469 1 -
  • Parts Catalogue No. : 99997-602, (E) 99997-607s
  • Owner's Manual No.: 99997-546, (F) 99983004
  • Shop Manual No.: 99997-705
  • Major Changes: Color, marking, seat, and front fender.

1974 S1BEdit

 
1974 Kawasaki S1B


  • Color
  • Fuel Tank: Candy Green
  • Front Fender: Chrome
  • Engine No.: SlE12001-
  • Frame No.: S1 F-12001-
  • Parts Catalogue No. : 99997-623S, (E) 99997-602-01S
  • Owner's Manual No. : 99997-812, (E) 99983-019, (F) 99983-031, (I) 99983-032, (W) 99983-033
  • ShopManualMo.: 99997-705
  • Major Changes: Color, marking, and seat. Brake lining wear indicator added. Steering friction damper discontinued.


1975 S1CEdit


  • Color
  • Fuel Tank: Halibut Blue
  • Front Fender: Chrome
  • Engine No.: S1E17100-
  • Frame No.: S1F-16300-
  • Parts Catalogue No.: 99997-602-50S, (E) 99997-602-515
  • Owner's Manual No.: 99997-846
  • Shop Manual No.: 99997-705
  • Major Changes: Color and marking. From late '75 model, tires changed to 3.25S-18 4PR front, and 3.50S-18 4PR rear.