2004 Yamaha YZF-R6 "motorcycle trouble codes" Questions

my bike turns over but won't start my bike went from running to not even starting and shows me a 19 trouble code displays on my speedo. i've checked almost everything if someone could help me? 19 ...

i have a 2003 yamaha yzf 600 the tach dosent read correct i have a 2003 yamaha yzf 600 the tach dosent read right it will kinda bounce around. for instance when riding it it will be at say 5000 rpm ...

...codes are displayed. go to Autozone but can of Sea foam $10 pour in 1/3 can to 2 gal fuel.. clean fuel filter or just buy a new one, your choice, empty out fuel filter and fill it up with some see ...