have to roll start when cold.

[jarfly]

On the my 07 z400, it will not start when cold unless you roll start it but after you get it started and warmed up a bit it starts fine and runs like a bat outa hell.

Would the valves cause this? Or what would?

[cataway]

yep your valves need to be shimmed

[jarfly]

great. lol Just had a timein chain put in this thing now i gotta tare it back apart.