Mikuni Bds26 Service Manual |best| Review
Inspect diaphragm for pinholes; clear out the emulsion tube passages. Lean pilot circuit or intake leak.
| Specification | Value / Detail | | :--- | :--- | | | 26mm | | Float Height (Dry/Bench) | 6.2mm to 8.2mm (0.24" to 0.32") | | Standard Main Jet (Seca II) | 102.5 (N100-604 series) | | Standard Main Jet (125cc) | 90 (004-281 series) | | Standard Pilot Jet (Seca II) | 17.5 | | Spark Plug Gap | 0.6–0.7 mm (NGK CR6HSA / CR7HSA) | | Fuel System Type | Downdraft, CV-type with Accelerator Pump | mikuni bds26 service manual
Remove the main jet (large brass hex or round screw) and the pilot jet (deeply recessed small brass screw). Step C: Coasting Enricher System Remove the small cover on the side of the carburetor body. Inspect diaphragm for pinholes; clear out the emulsion
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. Step C: Coasting Enricher System Remove the small
Ensure fluid exits clearly from the corresponding port at the other end of the circuit.
Before tearing down the carburetors, gather the necessary tools: