Bs26 Carburetor Manual Verified | Mikuni

Maintaining the predetermined float height is critical. A level that is too high causes a rich mixture, while a low level causes a lean mixture.

The following specs are for the standard BS26/BDS26 series. Note that factory settings may vary slightly by specific motorcycle model. Specification Main Jet #90 (Standard Front), #87.5 (Standard Rear) Pilot Jet #17.5 to #20 Idle RPM 1,450 – 1,550 RPM Float Height 6.2 mm – 8.2 mm (US/Australia Seca II) Fuel Level 4 mm – 6 mm below float chamber line 📏 Float Level Adjustment mikuni bs26 carburetor manual verified

Once the carburetor is reassembled, manually push the slide up with your finger and release it. It should fall with a distinct "thump" and a slight delay. If it falls instantly like a rock, the diaphragm isn't sealed correctly, and the carb won't function under load. Maintaining the predetermined float height is critical