Donald, The reason that the plastic gear would strip would be because the chain was not in a sharp state and you put to much presure on the saw when cutting.
As to the cost of a replacement plastic drive sprocket it would be $35.00 AUD + freight. The part number is 530053048.
Regards, Bruce
[This message has been edited by Bruce (edited 07-04-2003).]
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.