thank you very much for your reply. the chain had cut through the bottom of the case on the side gear box im suspecting it may be stretched and there are teeth broken off the lower sprocket I got the top one out no problem but the lower one and chain come out so far and then stop about where the chain tensioner is located im thinking i may need to remove the tensioner as well but im not sure how to do that . the replacement parts are over $200 im not even sure its worth it the tines are badly worn things I didnt notice when I bought in the dark . finding a used tiller around here is like finding needle in a haystack ! I would love to find just the side gear box for sale . thank you Brad