Olivetti d-Copia 284MF Service Manual page 161

5. Check or replace the retard roller assembly
and refit all the removed parts.
Caution: Before refitting the retard roller
assembly, firmly install the spring onto the
projection of the retard roller assembly.
Y111030-4
Retard roller
assembly
Projection
Spring
Service Manual
Figure 1-5-12
2JN
1-5-9