i just got my new yfz home and rode it around my yard for the first time (its night out) and instantly the header part of the exaust was glowing red..is this normal? just wanna make sure..any tips on break in and all that stuff will help also..
Hey man, there is no need for concern! This topic has been cover many times on this board... this Red hot glowing pipe is compleatly normal for the YFZ and it Dirt bike brethren. In an effort to keep the YFZ's weight to minimal standards, Yamaha made the Walls of the header very thin, and also is contributed to by the 3 exhaust valves flowing out of the 11.9:1 cylinder. Unlike what some other people have said about the carb being too lean its not that trust me. Also it will not affect your engine at all. Dont fret my young Brad, there is nothing to worry about other than a burnt calf, if riding wuth shorts on! Glad to be of service! :rock :rock rock on
your welcome brad, and in the way of breaking it in... well just take it easy for a while and dont go wide open until about like 4-5 hours in. and even then dont keep it open for too long, because when i did, the thing stalls and wont start for a while, so be carefull. After the 5 or so hour mark, you should change the oil, and after that, the motor should be about halfway done breaking in. Just dont beat it to hard for about another 5 hours, and you will then start to notice the bike getting the regular horse-power, and also better gas mileage. (you'll need it) And after that, feel free to do what you please, and rip up whatever grass you want as well! :rock :rock rock on