Mikuni Bs26 Carburetor Manual Verified
Remove all rubber O-rings, gaskets, and diaphragms. Carburetor cleaner will swell and destroy these rubber parts.
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Mikuni stamps specific model codes onto the carburetor body. Look for the stamped numbers on the side of the intake flange or near the float bowl gasket line to verify your specific production run. Standard Factory Baselines 26mm
| Fastener | Verified Torque (in-lbs) | Warning | | :--- | :--- | :--- | | Float Bowl screws | 7-9 in-lbs | Use a JIS screwdriver, not Phillips. | | Top cap screws (diaphragm cover) | 4-6 in-lbs | Overtightening distorts the diaphragm sealing surface. | | Drain plug (bottom of bowl) | 13 in-lbs | Replace the copper crush washer every time. | | Choke plunger nut | Hand tight + 1/8 turn | Plastic threads—do not use tools. | mikuni bs26 carburetor manual verified
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Remove the two top Phillips screws. Hold the cap down firmly while loosening, as there is a compressed spring underneath. Lift off the cap, remove the spring, and gently pull the rubber diaphragm and plastic slide upward. Inspect the rubber diaphragm for pinholes, tears, or hardening. 2. Needle Extraction
Note: These are baseline values. Your specific motorcycle model may have variations. When in doubt, refer to the OEM manual for your machine. Remove all rubber O-rings, gaskets, and diaphragms
By providing a comprehensive guide on the Mikuni BS26 carburetor manual, verified information, and troubleshooting tips, we hope to help mechanics, enthusiasts, and DIYers to properly maintain and repair their Mikuni BS26 carburetors.
The large brass hex or round jet located in the center of the bowl. Controls full-throttle fueling (3/4 to wide-open throttle).
Remove the four screws holding the float bowl. This link or copies made by others cannot be deleted
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Q: What is the recommended main jet size for a Suzuki DR-Z400S with a Mikuni BS26 carburetor? A: The recommended main jet size for a Suzuki DR-Z400S with a Mikuni BS26 carburetor is #132.