1-4) Apply the grease in an amount of 3 grains of rice to the entire surface of the positioning boss [1] on the back side of the cassette.
2) Apply the grease on inner periphery of the roller of the left cassette rail unit.
2-1) Remove the screw [1] and the left cassette rail unit.
2-2) Remove the screw [1], remove the rail roller [2] from the left cassette rail unit and apply the grease in an amount of a grain of rice on inner periphery [3] of