19 & 21MM 


Carb 19mm Del Lorto
Main Jet  75
Needle Receiver 262AU
Needle/Clip W9/2
Main Air Jet
Slide Cutaway  3.0
Pilot  45
Float Height 15mm
Starter Jet 60
Velocity stack is removeable on both carbs. You can use air box with either.


Carb 21mm Del Lorto
Main Jet  92
Needle Receiver
Needle/Clip ?/2
Main Air Jet
Slide Cutaway 
Pilot  50
Float Height 14mm
Starter Jet

So what do we do with all this stuff? Clean and adjust!

Do not use a caustic carb cleaner. Use contact cleaner or solvent. On the main jet & pilot jet, hold up to the light and make sure they are clear. If not run a small wire through to un-plug.

Float level is set at factory and we do not suggest you adjust it. Generally it is right on. Should be 15MM from gasket surface with the float just touching the float valve.

Check all parts for wear, replace if worn. Check slide for free movement, check hoses for cracks or wear.

After reasembly adjust idle for your preference.

AIR SCREW: o.k. here's the deal. comes from the factory 1 1/2 turns out. Usually this is ok, however if you have been experiencing "coughing", "starving for gas" turning throttle and bike gasps then catches on.......then......adjust air screw all the way in and then back out 3/4 turn. This is the sollution to that problem, not changing main jet.

If you would like more tech tips, have a question or a suggestion for a tech tip, please.......



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