Recessed into a tunnel near the main jet; controls idle to 1/4 throttle. 4. Step-by-Step Rebuild Instructions Step 1: Deep Cleaning and Disassembly
Inspect the rubber tip of the float needle. If it has a grooved ring worn into the cone, it will leak fuel and must be replaced. mikuni bs26 carburetor manual verified
On the Mikuni BS26, the pilot screw is usually located on the bottom (engine side). Leans the mixture (less fuel). Recessed into a tunnel near the main jet;
Finally, he found it: a grainy but official PDF from Mikuni American Corporation . It was the "Verified Service Manual" for the BS series. The Restoration If it has a grooved ring worn into
Submerge the stripped aluminum body, brass jets, and emulsion tube in carburetor cleaner for 20–30 minutes.
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Controls operation from 3/4 to wide-open throttle (WOT). At this point, the needle is lifted fully out of the jet, and fuel flow is restricted solely by the size of the main jet. Step-by-Step Rebuild Guide