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You're looking for a detailed diagram of the Mikuni BS25 carburetor, specifically a patched or modified version. I'll provide you with some general information and point you in the right direction.
This is the "brain" of the CV carb. Located under the top chrome or plastic cover, this rubber diaphragm must be free of holes or tears. If it’s "patched" with sealant, it’s likely to fail; replacement is always better. 2. The Jet Needle and Needle Jet
However, I can provide a textual description of the Mikuni BS25 carburetor components and their locations, or I can guide you on where to find the specific diagram you need. Would a detailed breakdown of the carburetor parts (such as the pilot jet, main jet, diaphragm, and float system) be helpful for your purposes? mikuni bs25 carburetor diagram patched
This report analyzes a “patched” version of the BS25 diagram, focusing on common failure points, aftermarket modifications, and how the patch alters original Mikuni engineering.
This includes the pilot jet and the pilot screw (often hidden behind a brass plug). This circuit handles 0% to 25% throttle. If your bike won't idle without the choke, your pilot jet is likely clogged. 5. Main Jet You're looking for a detailed diagram of the
The Mikuni BS25 is a Constant Velocity (CV) carburetor commonly used on vehicles like the Yerf Dog Scout, Rover, and some Yamaha motorcycles (such as the YBR 125). Unlike standard round-slide carbs, it uses a vacuum diaphragm to lift the slide, smoothing out throttle response. Key Components of the Mikuni BS25
Jetting Circuit: Includes the main jet (typically size 125) and pilot jet (typically size 110) that regulate fuel flow for high-speed and idling operation, respectively. Jetting : Changes to the pilot jet, main
Overview of the Mikuni BS25 Carburetor