Before working on the carburetors, know your specifications. Note that FRONT and REAR carbs may have different jetting. Mikuni BDS 26 (Double) Bore Size: 26 mm Main Jet: #90 (Front) / #87.5 (Rear) Pilot Jet: #22.5 (Both) Needle Jet (N.J): O-6 (Both) Pilot Outlet (P.O): 0.75mm Starter Jet (G.S): 1.2mm Float Height: 17mm ± 1.0mm Idle RPM: 1,450 – 1,550 RPM 2. Required Tools & Supplies
Ensure the pilot jet circuit is completely clear. A thin wire or compressed air can be used, but be careful not to enlarge the jets.
4.0mm to 5.0mm below the carburetor mix chamber mating surface Critical Component Checklist
Before beginning work, familiarize yourself with the core layout and factory parameters of the BDS26 system. Technical Specifications Downdraft, Constant Velocity (CV) Bore Size: 26mm mikuni bds26 service manual
Keep shop rags nearby to catch residual fuel draining from the bowls. Required Tools
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use welding tip cleaners or steel wire to clear jet holes; steel alters the precise calibration of soft brass orifices. Use compressed air instead. Component Inspection Checklist Before working on the carburetors, know your specifications
An inspection that relies solely on visual clarity can miss clogged channels inside the carburetor body. The Ultrasonic and Chemical Bath
If the measurement is outside the window, carefully bend the small metal tang on the float arm using needle-nose pliers. Re-measure. 2. Pilot Mixture Bench Setup
: Hold the carburetor at an angle so the float tang just touches the needle valve without compressing the internal spring . Required Tools & Supplies Ensure the pilot jet
To help me tailor any troubleshooting steps, what is this Mikuni BDS26 installed on? Also, Share public link
This controls your fuel level.