That engine has had some major modifications. I own 2 Mk40H's and a stock Mk40. Neither the Mk40 nor the MK40H came with a tiller handle. The rewind appears to be cut from the top of a "turtle top" rewind such as a Mk55.
The tower housing appears to be a graft of the lower portion of a D quicky tower and a stock Mk40 tower to lengthen it...OUCH!

BTW: I have reproduction cowling parts for KG9-1 and Mk40 engines.