Need your help please!

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  • Adam842

Posted March 31, 2015 - 06:52 PM


My yz400f is kinda sluggish in the lower rpms and sometimes it would stall if i pull in the clutch to coast or downshift. It starts up fine and has great compression and runs great in higher rpms. Do you  guys think its a jetting issue or what?

Could it be that the engine still needs broken in more

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