OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Victa Corvette 700 2 stroke repairable?

The 2 stroke (160cc Power Torque?) on my Victa Corvette 700 has a major problem. When you turn the cutting disc back and forward it moves about 1/4 turn and stops solid each side of the turn. The piston can be seen through the plug hole at bottom of stroke (?) and moves as far as the cutting disc turns. Does this sound terminal or an expensive fix. Can a reasonably handy home mechanic fix this? ThnX.