Thank you for contacting the AnswerARMY.
It is upsetting that you have had this problem.
Please refer to your operators manual for bar and chain replacement / tensioning.
Also refer to the video that I include the link here.
/images/app/answers/detail/a_id/1164/kw/video
If the bottom of the teeth are damaged (because the chain came off) the chain may not fit into the bar and you would need to purchase a replacement.
Thank you for contacting the AnswerARMY.
It is upsetting that you have had this problem.
Please refer to your operators manual for bar and chain replacement / tensioning.
Also refer to the video that I include the link here.
/images/app/answers/detail/a_id/1164/kw/video
If the bottom of the teeth are damaged (because the chain came off) the chain may not fit into the bar and you would need to purchase a replacement.