Mikuni Bds26 Service Manual Better Jun 2026

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Guide to Rebuild Mikuni BDST Carburetors - LiteTek

Reassembly follows the reverse order of disassembly. Lubricate O-rings with a light film of silicone grease or clean engine oil before installation. Setting the Float Height

Having the right tools and information ready will save you significant time and frustration.

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You can find specifications via sources like Scribd.

Carefully lift out the slide/diaphragm assembly. Do not use harsh chemicals on the rubber. 3. Cleaning and Inspection

2.0 to 2.5 turns out from lightly seated Float Height: 13mm to 14mm Required Tools and Shop Supplies This public link is valid for 7 days

This controls your fuel level.

Mikuni BDS26 is a 26mm dual constant velocity (CV) carburetor commonly found on motorcycles like the Hyosung GV250 (Aquila) Yamaha XVS250 (DragStar)

Approximately 1.5 to 1.75 turns out from lightly seated. Service Resources & Documentation Can’t copy the link right now

Unlike traditional slide carburetors, the BDS26 utilizes a vacuum-operated diaphragm to control the slide position. This design offers smoother throttle response, better fuel economy, and reduced emissions, but it requires specific maintenance procedures different from those of manual-slide carburetors. This document outlines identification, disassembly, inspection, reassembly, and tuning protocols.

[ Caliper Gauge ] =========|========= | <-- Measure Distance +--------v--------+ | [ Float ] | +-----------------+ =======/ \========= <-- Gasket Surface (No Gaskets) / \ Install the new fuel valve seat, filter, and float needle.

Because the BDS26 often operates in pairs linked by a throttle shaft, extreme care must be taken to avoid damaging the linkages.

2.0 to 2.5 turns out from lightly seated

With the carb upside down (float resting gently on the needle), measure the distance from the gasket surface to the highest point of the float. Standard BDS26 height is typically 13mm ±plus or minus 1mm (Verify with specific bike manual). Adjust by gently bending the metal tang.