trinogt: the backplate is a duratrax unit that fits 12-18 size engines. the number is DTXP6031.
http://cgi.ebay.com/DURATRAX-6031-O-...QQcmdZViewItem
your welcome
It was sooo easy to start the old smartech using this and my cordless drill

didnt even prime the fuel, it just got sucked right in the carb in no time