If this is as good as it has run and you can restart it when warm or hot just put the plug back in it and RIDE THE FRIGGIN THING.
The XR600 has a big ass lump of a pump as a motor. Unless you have a Honda service truck and a factory trained tech standing by for the love of god just call it good and stop the madness.
Steve in SF
87 Harley FXRS-SP ~ 06 KTM 625 SMC ~ 72 Honda CB750/915cc ~ 92 XR600/654cc ~ 95 XR650l/675cc ~ 03 CRF450r ~ 05 CRF450x ~ 02 XR650l/675cc ~ 86 YZ490 ~ 93 YZ80 ~ 93 XR650l Project