roller’s shaft is not properly inserted over the drive shaft. If necessary, repeat step 4. Figure 7-20 Replacing the Black Bushing 6 Rotate the black bushing forward until it locks in place. Figure 7-21 Locking the Black Bushing in Place 7 Slide the white bushing to the right until it goes through the carriage opening (see figure 7-22). The tab on the white bushing must be oriented so that it will fit through the keyed opening on the carriage. 8 Rotate the white bushing forward until it locks in place. 168 7 Removal and Replacement C4170-90959