Drive Unit 
D086/D087 4-98  SM 
4.10.16 DEVELOPMENT CLUTCH-Y 
1.  Rear cover (  p.4-19) 
2.  PSU bracket (
 p.4-158 "PSU") 
3.  Open the controller box. (
  p.4-153 "Controller Box"). 
4.  Drum/development motor-Y (
 p.4-84) 
 
5.  Disconnect the connector [A] (
 x 1). 
 
6.  Remove the pulley and bushing [A]. 
 
7.  Turn the development clutch unit [A] counter-clockwise and then pull it out (
 x 1).