... from JANPA(air-cooled,4-stroke,OHV 90,V-twin,vertical shaft gasoline generator/generator gasoline generatorgenerator MODEL HPGD-10E HPGD-12EALTORNATOR ... GX620 GX670 type air-cooled,4-stroke,ohv90 V-twin,vertical shaft continuous output(kva) 13.2(3600rmp) 15.8(3600rmp) bore ...