adjusting cam chain on trx90?

[Locknload82]

my sons trx90 is making a rattling noise in the engine. I checked the valves, they seemed to be adjusted to specs. Is there a way to adjust the cam chain on these?

Operators manual was no help. (so what else is new)

[ROBBSRACING]

There is no way to adjust the cam chain on a TRX 90. If the noise you are hearing is in deed coming from the cam chain its time to replace it.