Daniel Parker

03 KTM 640 LC4 Supermoto discussion forum:


Daniel Parker

Daniel Parker 
Dan said 2010-02-27 23:39 
 
Hi all! I have an LC4 2003 supermoto. Just bought it. Took it for a run, it surges and hesitates quite badly throughout the whole rev range. I have taken the carb off and cleaned all jets. The spark plug read really lean, almost pure white! It has a G-force can on and a pipercross filter. Can anyone recommend suitable jetting for the bike. Its running a 152.5 main jet and 6G5 needle jet with clip set on the 3rd ring (Lowest ring) This would give it the most fuel right?. The spark plug is NGK DCPR8E. I am totally new to running a KTM so any advice would be awesome guys.. Thanks 
 
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