Engine goes out with old E10 -how to remove fuel? Honda PCX 125

Hello! yesterday the spare canister with 5L old E10 tipped into the tank (was stored cool for about 20 months) after 500 meters the engine went off and no longer on. My workshop has 2 weeks vacation! Treasures of the fuel was resined. Does anyone know help? Will fuel filters exchange and leave old fuel there. Which fairing parts do I have to dismantle like (special tool?) to get to the fuel line for injection? Thank you Ralf