Carburetor Settings and Specifications

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This page contains the specifications as well as the stock settings for the Mikuni Carburetors found on the Suzuki Katana Motorcycle.

Note: When tuning the fuel screws start at the stock setting, or a known good position. Make changes in increments of quarter or half turns on the screws.

Contents

1988-1989

600

  • Type BST31SS
  • Main jets 1 and 4 137.5
  • Main jets 2 and 3 135
  • Main air jet 1.0 mm
  • Jet needle (-clip position)
    • California 4CZ-5-1
    • Except California 4CZ-4-1
  • Needle jet P-8
  • Pilot jet
    • California 37.5
    • Except California 32.5
  • Pilot air jet
    • 1988
      • California 155
      • Except California 150
    • 1988
      • California 150
      • Except California 155

Pilot screw setting 1.5 turns

  • Starter jet 45
  • Float height 14.6 +/-1 mm (0.57 +/- 0.04 inch)

1100 (1988-1993)

  • Type BST34SS
  • Main jets
    • carbs 1 and 4 - 112.5
    • carbs 2 and 3 - 110
  • Main air jet 0.6mm
  • Jet needle
    • California 5DL16
    • US except California 5DL11
    • UK 5DL7-3
  • Needle jet
    • California and UK P-0
    • All other P-2
  • Pilot jet
    • California and UK 42.5
    • All other 32.5
  • Pilot air jet
    • California 155
    • US except California 135
    • UK 150
  • Pilot screw setting
    • US 1.5 Turns out
    • 88-90 UK 2-7/16
    • 91 on UK 2-1/2
  • Float height 14.6 +/- 1mm (0.57 +/- 0.04 inch)

1990-1997

600

  • Type BST33SS
  • Main jets 112.5
  • Main air jet 0.5 mm
  • Jet needle
    • California 5F105
    • Except California 5F104
  • Needle jet P-2
  • Pilot jet 32.5
  • Pilot air jet
  • California 1.45 mm
  • Except California 1.55 mm
  • Starter jet 35
  • Float height 14.6 +/-1 mm (0.57 +/- 0.04 inch)
  • Fuel Screws 1.5 Turns out from stop

750 (including 1989)

  • Type BST36SS
  • Main jets
    • US, cylinder no. 3 110
    • All others 105
  • Main air jet 0.5 mm
  • Jet needle
    • California 5EZ63
      • US except California 5EZ62
      • UK 5EZ61-3
  • Needle jet
    • US Y-1
    • UK Y-2
  • Pilot jet
    • US 32.5
    • UK 37.5
  • Pilot air jet
    • 1989 and 1990 California 1.25 mm
    • 1991 on California 1.2 mm
    • US except California 1.35 mm
    • UK Preset (1-5/8 turns back)
  • Starter jet 37.5
  • Float height 14.6 +/-1 mm (0.57 +/- 0.04 inch)
  • Pilot screw setting 1.625 turns out

1998-2006

600

  • Type BSR32SS
  • Pilot jet 12.5 (N224.103)
  • Jet needle
    • European models (clip position) 5DH29-54 (3)
    • US and Canada models 5DH30-54
  • Needle jet P-0
  • Main jet
    • German full power Y, K1, and K2 (00-02) models 115
    • All other models
      • carbs 1 and 4 115
      • carbs 2 and 3 112.5
  • Pilot screw settings (turns out)
    • Austria and Switzerland 2 5/8
    • German restricted 2
    • German full power
      • 98-99 - 2 1/4
      • 00-02 - 2
    • All other Euro models 2 1/4
    • Canada models 2 5/8
    • US models 1.5 turns out
  • Float height 13.0 +/- .5 mm

750

  • Type BSR36SS
  • Pilot jet
    • Austria ans Switzerland 12.5
    • All other Euro models 15
    • US and Canada 12.5
  • Jet needle
    • Austria ans Switzerland (clip position) 5DF19-53 (3)
    • All other Euro models 5DF-52 (3)
    • US and Canada 5DF21-53
  • Needle jet
    • Euro models P-0
    • US and Canada models P-0M
  • Main jet
    • Austria and Switzerland
      • carbs 1 and 4 120
      • carbs 2 and 3 117.5
    • All other Euro Models 117.5
    • US and Canada 117.5
  • Pilot screw setting (turns out)
    • Austria and Switzerland 3
    • All other Euro models
      • carbs 1 and 4 - 2
      • carbs 2 and 3 - 1 1/2
    • Canada models 3
    • US models pre set
  • Float heights 13.0 +/- .5mm

See also

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