Its impossible to know what exactly he used for that exact sound. It wqas recorded in a pro studio.
From what i hear its just clean with added touch of delay and chorus, maybe some flanger also (?). I assume its played with the
bridge position.
from there you can play with the EQ a little to get that "dull" sound of the rythem track.
the second part of the lead solo is an octave phaser combined with the regular distorted sound.