tou cna get a roto start for it called tiger drive system i think
www.jespares.com has them. but to be honest when i had mine it started first pull evry time after i tuned it and it loosened up quite nicley so personally i wouldnt bother 1-2 pulls and she should fire when tuned correct i was going to get one my self as i had never had pullstart before but took 5 mins to get used to no i prefer either pullstart or starter box and dont like rotostarts.