The idle speed is unstable (too high/low) for my bike, how do I adjust it? How does the idle screw work? If you have confused with these questions, this vide
Pilot Screw Adj. Tool - Motion Pro
How to: Idle mixture screw adjustment - The Junk Man's Adventures
KEIHIN CARBURETOR Installation Instructions - Hi-Performance
Go-Kart Carburetor Adjustment Guide
Pilot & Idle Screw Adjustment Explained Part 1 - Pilot/Air-Fuel Mixture Screw
HOW TO Install & Tune a Nibbi PWK Carburetor (step by step guided!!)
NIBBI RACING
How (and if) to adjust idle speed
Mikuni Tuning and Jetting Guide - THE VINTAGE BIKE BUILDER
Pilot Air/Fuel Screw Adjustment Explained - Multiple Carbs - Part 2