Speedster sk/720 accel pump delete jetting

[kcr357]

Got a couple of single carb 720 engines. Looks like they may have been seized and forced free which caused the accelerator pump can to move. Long story short I don't have the parts to put them back to stock so I need to delete the accelerator pumps and compensate. Anyone know jetting specs for this?

 

[Texbasspro]

My 2 cents. The jetting needs to stay at best fuel ratio - where it probably should be now. Accelerator pumps only give slight squirt for the short lag of a quick throttle response.
You may get the same effect by over throttling then backing down.

You over jet - you may foul plugs too much.

 

[Texbasspro]

Bytw
I have three speedsters
My two stroke has only cavitation problems

 

[etemplet]

I'd try going up 2 jet sizes on the low speed, nothing on the high speed. You could try going up one jet size which might work. I don't think it will carburate properly without rejetting the low speed. Good Luck

On a side note I just bought a 96 Speedster. I hope the carbs don't have the accelerator pump. LOL