What kind of maintenance does my Shredder Joe SDJ616 require? Your Shredder Joe SDJ616 is completely maintenance free, with no gas, oil or tune-ups needed, making it effortless to start and maintain for many seasons to come. If there is ever an issue with your Shredder Joe SDJ616, please contact Snow Joe® + Sun Joe® Customer Service 1-866-SNOW JOE (1-866-225-9723) (Monday through Saturday 10am-6pm EST). Related articles My unit is not starting. Can I make payments over the phone for $7? What size trimmer line does my Shredder Joe SDJ616 use? How easy is it to store my Shredder Joe SDJ616? Does my Shredder Joe SDJ616 have an adjustable stand?