Carburettor Type Mikuni BS36
Main Jet
  All US, 1984 through 1987 UK   112.5
  1988 and later UK   110
Main air jet   45
Jet needle (-clip position)
  FJ1100 US   5FZ63-3
  FJ1100 UK   5FZ62-3
  FJ1200 US   5FZ72
  FJ1200 UK   5FZ74-3
Needle Jet
  FJ1100   Y-0
  FJ1200   Y-2
Pilot air jet
  FJ1100   160
  FJ1200   110
Pilot jet
  US   37.5
  UK 1984 through 1990   40
1991 on   42.5Pilot screw
  US   Preset
  UK 1984 through 1990   2 turns out
  1991 on   3 turns out
Valve seat size
  US   2.3
  UK 1984 through 1987   2.3
  1988 on   1.5
Starter jet   30
Float height   22.3mm ± 1.0mm (0.88in ± 0.04in)
Fuel level
  FJ1100   3.0 ± 1.0mm (0.12in ± 0.04in)
  FJ1200   2.5 - 3.5mm (0.098 - 0.138 in)
42,5  
