Mikuni Bs26 Carburetor Manual Verified

On the Mikuni BS26, the pilot screw is usually located on the bottom (engine side). Leans the mixture (less fuel).

The float height must be set precisely (check your specific workshop manual for the measurement, usually around 14.5mm - 17mm) to prevent flooding or lean conditions. Assembly: Ensure all seals are properly seated. 5. Troubleshooting Common BS26 Issues Probable Cause Bike won't idle/starts hard Clogged Pilot Jet Clean pilot jet thoroughly. High idle, slow to return Vacuum Leak/Lean Check intake boots/pilot screw. Bogging at WOT Main Jet too small/Clogged Clean/Increase main jet size. Fuel overflowing bowl Stuck/Damaged Float Needle Replace needle/seat, set height. Sluggish midrange Diaphragm torn/Needle wrong Replace diaphragm/adjust clip. 6. Resources for Verification mikuni bs26 carburetor manual verified

Based on the search term you are likely looking for the official specifications, tuning data, and exploded diagrams for the Hitachi/Mikuni BS26 carburetor (commonly found on Suzuki DR, GN, and Honda CD/Trike motorcycles). On the Mikuni BS26, the pilot screw is

If you experience a "flat spot" during mid-range acceleration (1/4 to 3/4 throttle), you may need to adjust the jet needle. Assembly: Ensure all seals are properly seated

Below is a compiled from the official OEM service data for the BS26 carburetor.

Hold the carburetor body at roughly a 60-degree angle. The float tab should just touch the spring-loaded pin of the needle valve without compressing it.

Turn the screw inward or outward in 1/4-turn increments until you find the highest, smoothest idle speed.