Mikuni Bds26 Service Manual

During assembly, ensure the slide housing o-ring is seated correctly. Because the recess is shallow, some builders use a fuel-resistant gasket cement like Permatex #85420 to keep it in place.

Reassembly is the reverse of disassembly, but requires strict attention to tolerances. Setting the Float Height

I hope this guide provides everything you need to keep your vintage or classic motorcycle running smoothly. While a single, dedicated manual doesn't exist, the wealth of information in factory service manuals and the enthusiast community ensures no problem with your Mikuni BDS26 will go unsolved.

Remove the two top screws securing the vacuum chamber cover.

: These smaller cruisers typically use a single carburetor. mikuni bds26 service manual

The following specifications are standard for the Mikuni BDS26 used on 250cc V-twin applications: Specification Idle Speed 1,450 – 1,550 RPM Float Height Main Jet (Front/Rear) Main Air Jet Pilot Jet Jet Needle 2nd groove Throttle Cable Play 0.5 – 1.0mm 2. Essential Maintenance & Cleaning

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Place the brass jets, float bowl, and main body into a cleaning solvent. Never soak rubber diaphragms, O-rings, or plastic floats in harsh chemicals.

Keep shop rags nearby to catch residual fuel draining from the bowls. Required Tools During assembly, ensure the slide housing o-ring is

Having the correct tools prevents stripped brass jets and damaged soft aluminum bodies.

Spray soapy water on intake boots to check for bubbles; adjust cable play.

JIS (Japanese Industrial Standard) screwdrivers. Standard Phillips screwdrivers will strip Mikuni brass screws. Metric socket set (8mm, 10mm). Digital or vernier calipers (for float height).

: Inline-four cylinder bikes use a bank of four BDS26 carbs. Setting the Float Height I hope this guide

The Mikuni BDS26 service manual is the essential roadmap for maintaining the 26mm double carburetors found on bikes like the Yamaha Virago 250 V-Star 250

Incorrect float height causes either engine flooding (too high fuel level) or high-RPM fuel starvation (too low fuel level).

Screw in the pilot jet and main jet snugly, but do not overtighten.