K-657, 4 x 12 mm

K-657, 4 x 12 mm. JIS

Item No.: K-657

Carb screw 4x12 mm.

  • Original "Japanese Industrial Standard "(JIS) for all Suzuki models.
  • For Mikuni and Keihin carburetor.
  • For float chamber, air-cut, top cap or attachment-bridges.


Check allways the jet size.
Clean allways the total fuel system and fuel tank.
Replace allways the complete floatvalve and seat, not only the floatvalve.