the sketch i have send is for a puller only for 600ccm engines.
Threat is M38x1,5
The 350 and 500ccm engines hav threat M35x1,5
If one has to pay for getting one made, it might be cheaper to buy one from Buzetti
Buzetti M35X1,5 ROTAX
Artikel Nr.: BZ5340
Buzetti M38x1,5 Suzuki Burgmann
Artikel Nr. BU5343
ciao Joachim