How do I know what Mikuni carburetor I have?

Look at the top view of the float chamber cover, the cover gasket of the float chamber or the jet chamber cover gasket to identify a Mikuni Carburetor. There is a word that should be printed on the car. It can be in small or large letters.

How do Mikuni carburetors work?

The starting system works by opening a passage that allow more fuel to pass through a different set of jets making the mixture richer. The starting system (choke) only works if the throttle is kept closed, if you give the carburetor any throttle with the starting system on it won’t work.

How are Mikuni carburetor jets measured?

On the Mikuni take the number of the jet and divide by two, that is the size in mm. i.e. a 320 main has a bore of 1.60mm . On Keihin the size is the bore in mm i.e. a 150 main jet has a bore of 1.50mm.

How do you lean out a Mikuni carb?

If the engine is running poorly just off of idle, the pilot jet screw can be turned in or out to change the air-fuel mixture. If the screw is in the back of the carburetor, screwing it out will lean the mixture while screwing it in will richen it.

How do I rebuild a Mikuni carburetor?

Mikuni Carburetor Rebuild Kits, Mikuni Parts, Mikuni Carburetors, + Mikuni Accessories & Tools available from a wide range of online sources collected all in one spot. Check-out the wide selection and discount prices. We locate and promote products from a wide range of Mikuni Resellers and Vendors. This site is not affiliated with Mikuni

How to rebuild Mikuni carb?

Remove the 4 screws holding the float bowl to the carburetor body.

  • Pull gently with a rocking motion on the float bowl,to loosen it without damaging the gasket between the two parts. Set bowl aside for cleaning.
  • Using hex driver,remove main jet and the ring that the jet holds on.
  • What are some common Mikuni carburetor models?

    Mikuni VM12SC on Yamaha QT50 and PW50 This is a 12mm carburetor (12mm venturi diameter) with a 18mm clamp diameter.

  • Mikuni H9-10 on Indian,R4-13 on Trac (Daelim) H9 is a 10mm carb with a 18mm clamp diameter. R4 is a 13mm carb with a 20mm clamp diameter.
  • Mikuni VM10-24 on Angel (TYM) mopeds This carb is on Taiwan-made Angel and Speed Bird mopeds.
  • How to install a Mikuni performance carburetor?

    1- VM 22 Carburetor. Mounting holes 48mm apart – This is a Mikuni VM aftermarket carburetor made in China (Good quality)

  • 1- Alloy adapter 48mm long (slotted so you can adjust carburetor position)
  • 1- Performance Air Filter 93mm long (3 5/8″)
  • 1- Gasket
  • 2- 6mm x 20mm Bolts
  • 2- 6mm x 25mm Bolts
  • 2- 6mm Nuts