Might be worth actually giving them a call if you have a contact number. The other manufacturers that used a solo210 I can think of is adventure, early nirvana, fresh breeze (different carb), pap and I think H&E. So might be worth dropping them an e mail. There was also an American dealer that done a load of spares and upgrades for that motor but can't remember the name think it starts with an M but I'm guessing. Well worth a look around somewhere there is a PDFs manual and exploded drawings also wiring diagram. Used to have them but must have deleted when I changed motor..
Hope that's some help..
Cheers Col..
Mojo's gear I think it is