hello guys,

i have a metallic noise at each gearbox selection (1 to 6, up or down)
and when you push the bike, engine off, front to back, i have a metalic
noise between the shaft of the sprocket and the gearbox.
i has the same metalic noise( very important) when i drive my blade
at each selection of gear.
My blade is a 09 models with 6000Kms
and i just change my engine oil last week

thank's guy's

 

My first thought would be a dry chain, ( not lubed well enough), or a chain that is not properly tensioned.