Service Manual - Mikuni Bds26

Understanding the operation is vital for diagnostics:

The starter jet (choke) is likely clogged, or the pilot jet is dirty.

is a 26mm downdraft carburetor designed for small-displacement, multi-cylinder engines , often found in motorcycles like the Hyosung GV250 and various Japanese cruisers from the 1980s and 90s. As a carburetor, the Go to product viewer dialog for this item.

The Mikuni BDS26 service manual explains maintenance, troubleshooting, and rebuild procedures for the BDS26 carburetor used on small engines and motorcycles. A concise manual typically includes: mikuni bds26 service manual

Reassemble the pilot mixture screw assembly in this exact order: Screw -> Spring -> Washer -> New O-ring.

Carefully slide out the float pin, remove the float, and the needle valve.

Place the jets and needle in carb cleaner. Do not soak rubber parts or the plastic float. Understanding the operation is vital for diagnostics: The

Since Mikuni does not publish a standalone manual for the BDS26, you must search for specific bike models. Here is how to find the right data:

The service manual specifies a float height of 14.6mm. Measure this with the needle valve seated, but not compressed.

: These smaller cruisers typically use a single carburetor. Place the jets and needle in carb cleaner

Needle-nose pliers, digital calipers (for float height), and an ultra-fine wire set or guitar strings.

You will most commonly find the BDS26 on:

No single “official” standalone manual exists from Mikuni for the BDS26 alone; instead, the critical data is sourced from original and the rare Mikuni HSR/VM/CV tuning guides that include BDS26 supplements.

To replace the jets, follow the float bowl removal steps in . The main and pilot jets are immediately visible. A complete re-jetting is typically only required if you have modified both the intake and exhaust systems.