Sadly this is quite common on both model 33's and 45's due to lack of chain adjustment and also running over concrete edges which in turn will bend the chain case upwards thus reducing the clearance between the the cutter chain and the chain case..

This one will have to have a new piece welded into place and metal finished.

Cheers,
BB.

I live a 24 Hour lifestyle, but every now and again I seem to fall asleep, well at least that's what my wife tells me.