According to this page it is a Zongshen motor.i just tried to get a service manual for my friends t 1000 and the a.i. that i chatted with gave me the owners manual said they don't have the shop manuals mine is a model217.203700. i am trying to find out what engine is on it . i know it is a420 cc and has a 42 inch deck. but i am not sure what motor no. it is.