Starting 04 Yzf450

My son has a yzf450 when he starts it the head pipe glows red very quickly and to me seems to back fire alot. I ride two strokes and just got a new kxf450 yesterday :bonk: dont know much about them yet but love these web site helps out alot.Ithink its running to lean and he to adjust fuel screw HELP ANYONE :applause:

The glowing header is the "please ride me" indicator light (normal, but can increase when lean). The backfiring could be caused by the header or midpipe leaking, or it may just be a lean mixture. Make sure you have a good seal at those locations. It could be leaner because of cold weather and you can open your fuel screw about a half turn to see if it improves.

Thanks i will check it out

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