Sherpa ST-MT340 . 
This is for the power unit / engine as shown 
I have had it running- see video . But I think the carb needs a repair kit fitting 
Also I think I saw a small fuel leak , perhaps the fuel cap, i'm not sure . 
Please study the photos and video
There are NO attachments included  
I will send by Parcelforce 48 or you can collect in person from Midsomer Norton near Bath .