I think i need to adjust my valves on my z400, cause i hear lil noise in the top engine part. also i read sum where i should adjust them 15-20 hours of riding time ( from brand new) I dont no 2 much about adjusting the valves.
so what size feller gauges do i use?
Do i have to purchase a shim kit ?
and i need to no how to do it
plz some body help me adjust my valves

thank you 4 reading