OutdoorKing Repair Forum Forums Repairs and Maintenance Questions On Ride On Mowers Questions On Cox Ride On Mower Frames Mower is making strange noise,diff problem?

I've included a pic of the diff,it appears it was optional back then,chain is worn out anyone known what size it is?how many links?Has anyone taken this diff apart,I want to check it for lube as it appears to have seals that are available in the parts book,colin