Mikuni Bds26 Service Manual ((better))

Unscrew the brass needle valve seat from the carburetor body. Inspect the micro-screen filter attached to the back of it for debris. 3. Jet and Emulsion Tube Removal

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

Lift the float out along with the needle valve (float needle). Unscrew the main jet from the center emulsion tube holder.

Worn shaft bushes allow air leaks. No repair kit exists – must be machined and bushed. mikuni bds26 service manual

Lift off the cap carefully; the internal slide spring is under tension. Pull out the compression spring.

Unscrew the round brass main jet from the center emulsion tube (needle jet holder).

Proper float height is critical to prevent overflowing or fuel starvation. Unscrew the brass needle valve seat from the carburetor body

For an in-depth, specific rebuild, refer to the Mikuni PHH Service Manual for general principles and specialized Mikuni Resources for jetting information.

to visualizing the cleaning process.

Before you tear the carb apart, it is vital to have the correct specs. Below is a compilation of verified data for the BDS26: Jet and Emulsion Tube Removal Having the correct

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

If you’d like, I can:

The BDS26 manual shows an inverted carburetor method. With the gasket in place, measure from the float bowl mating surface to the highest point of the float. Spec: . Bend the float tang carefully. Incorrect float height is the #1 cause of flooding on the BDS26.

13.0 mm to 14.0 mm (Measured from the gasket surface) Idle Speed: 1,300 – 1,400 RPM

Reinstall the jet needle into the vacuum slide along with its plastic retainer.