to shed some light to the question if need ng 2t ay it depends if your generator is 2stroke or 4stroke...
i think yours is 2stroke so need talaga ng 2t... if your generator doesnt have a autolube or not working properly, ill suggest to put the 2t direct to the gasoline...
if your generator is 4stroke, no need to put 2t...
to store generator for long period of time, dapat ay drain the gasoline, tama yun sabi ni imoortal na dapat patakbuhin hanggang mamatay ng kusa para maubos totally ang gasoline para di mapanis ang gasoline... okay din na tanggalin ang sparkplug pero mas maganda nakakabit na lang baka kasi malagyan ng dumi ang slot ng sparkplug... dapat lang bago istart ulit ay pahiran or minsan ginagamitan ng papel de liha ang spark plug... if your generator have a battery on it, for electrric starter.. dapat ay naka tanggal din ang connex baka kasi maubusan ng karga.
if 4stroke din dapat ay nag change oil kahit once a year...
hth