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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Sluggish response 1/2 to full throttle,help?
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[QUOTE="Rich Rohrich, post: 699783, member: 16241"] This time of year lean hesitation is pretty common. Before you start changing jets it might be worth looking more closely at the problem. If your hesitation is from 1/2 to WOT throttle then you are crossing over 2 circuits the needle and the main. Within the needle travel you will be dealing with a large portion of the needle's taper, which has a profound effect on the fuel curve. It's worthwhile to mark the throttle housing at 1/4 1/2 3/4 and WOT and doing some snap-roll on tests under load between 1/4 & 1/2 , 1/2 & 3/4 etc. The idea being to determine where specifically the hesitation is starting from. There is a good chance that adjusting the fuel screw and the needle clip position is all you need to add some fuel to the initial throttle opening positions to smooth the transition to WOT. Most riders spend very little time and full throttle , but tend to adjust the main first becuase it's easiest to access. Working from the bottom up will give you a better idea of which circuit is the major culprit. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Sluggish response 1/2 to full throttle,help?
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