How do you adjust a slide carburetor?
Open the throttle wide open and feel inside the carbs. Both slides should be open the same. Adjust the cables to make sure they open the same amount and this will syncronize the slides.
What does a pilot jet do on a Mikuni carb?
The pilot jet is the part which supplies most of the fuel at low throttle openings. It has a small hole in it which restricts fuel flow though it. Both the pilot air screw and pilot jet affects carburetion from idle to around 1/4 throttle.
Which way is choke on a Mikuni carburetor?
The pivot point on the lever can be set up a couple different ways, but the plunger that the lever activates is the only thing that matters. Just remember that if the plunger is UP, the choke is ON. If the plunger is DOWN, the choke is OFF.
How do you lean out a Mikuni carburetor?
If the engine is running poorly just off of idle, the pilot jet screw can be turned in or out to change the air-fuel mixture. If the screw is in the back of the carburetor, screwing it out will lean the mixture while screwing it in will richen it.
What is a Mikuni round slide carburetor?
Rick Sieman walks us through the basic function and set up of one of the most common and time-tested carburetors of all time, the Mikuni round slide. All things considered, the round-slide Mikuni is an excellent carb, with a wide range of tuning capabilities.
Do I need a new jet for my Mikuni carb?
A smaller slide cutaway would enrich the mixture. Mikuni offer slides for their round slide carbs in 4 to 5 different sizes. Flat slide carbs generally do not offer as many sizes. If you find the mid-range is good between 25-50 percent throttle but is problematic between 50-75 percent throttle, a new jet or needle may be required.
Why choose a round slide single carburetor?
Mikuni’s VM Series round slide single carburettors have proven themselves as the performance standard for use in any single cylinder motorcycle and ATV applications for motocross, enduro and trail riding, to flat track racing and road racing on both 2-stroke and 4-stroke engines.
How do you adjust the float on a Mikuni carb?
These floats lift against an bronze-alloy float arm. That arm, like that the one on the connects the bronze-alloy floats, has an adjustment tab located in to middle of the arm. The larger Mikuni flat-slide and pumper carbs (HSR, RS, HS, TM33) use two plastic floats joined by a single arm.