Mikuni Bds26 Service Manual |verified| 〈Trusted ✔〉

According to the manual, start by removing the carburetor from the intake manifold. Do not remove the throttle shaft unless absolutely necessary—it contains tiny, unserviceable bearings.

| Ref # | Part Name | Torque Spec (in-lbs) | Wear Limit | |--------|----------------|----------------------|-------------| | 1 | Vacuum Piston Assembly | N/A (hand-fit) | Scratches >0.2mm deep | | 2 | Diaphragm | N/A | Any tear, pinhole, or hardening | | 3 | Jet Needle (5D12-3) | N/A | Bend >0.1mm | | 4 | Main Jet (#125-#145) | 12-15 | Oval orifice | | 5 | Pilot Jet (#35-#42.5) | 10-12 | Clogged cross-drilled holes | | 6 | Float & Needle Valve | 7-9 | Float height out of spec | mikuni bds26 service manual

Many backyard mechanics rely on generic tuning guides. That is a mistake for the BDS26. Here is why the official service manual is irreplaceable: According to the manual, start by removing the

The Mikuni BDS26 is a synchronized dual-bore constant velocity carburetor, primarily found on parallel-twin and some small V-twin engines from the mid-1980s to late 1990s. Unlike slide-type carburetors, the BDS26 uses vacuum-actuated pistons to regulate airflow, ensuring smooth throttle response across changing loads. That is a mistake for the BDS26