

Just open the throttle part way, boot it, and it starts. When an engine is warmed up, it usually restarts easily.

Here are some simple tips on how to dial-in your round slide. Perhaps the most prolific dirt bike carburetor of all time, the Mikuni round slide is a simple, dependable high-performance fuel mixer that is easy to tune. And, if nothing else, making your vintage dirt bike (or late-model dirt bike) easier to start and less prone to fouling plugs, will be worth the time to learn a few things. A basic understanding of this carb will make life a whole lot easier. Still, many dirttbikes equipped with the Mikuni round slide run poorly or are hard to start. In fact, just about every Japanese bike from the 60s and 70s came with this mixer. A huge number of vintage bikes come equipped with the good old round-slide Mikuni carb. All things considered, the round-slide Mikuni is an excellent carb, with a wide range of tuning capabilities.
