It all depends what tension you are currently using and what game style you play (aggressive, defensive, all-rounder, net-play etc) And also what string you currently use. And what you hope to acheive? If you are talking just about maximum tension for the racket, then: According to the Yonex catalogue, it is: Mains 18-20lbs x Cross 20-22lbs The racket is quite strong and sturdy and some players have strung it up to 30lb (at their own risk)!
