Cirrus SR22 Pilot's Operating Handbook And Flight Manual page 512

Section 9 Cirrus Design
Supplements SR22
Section 8 - Handling, Servicing & Maintenance
Propeller Servicing
The spinner and backing plate should be cleaned and inspected for
cracks frequently. Before each flight the propeller should be inspected
for nicks, scratches, and gouges. If found, they should be repaired as
soon as possible by a rated mechanic, since a nick or scratch causes
an area of increased stress which can lead to serious cracks or the
loss of a propeller tip.
Propeller blades are painted with a durable specialized coating that is
resistant to abrasion. If this coating becomes eroded, it is necessary to
repaint the blades to provide proper erosion protection. Painting
should be performed by an authorized propeller repair station.
It is permissible to perform a blade touch-up with aerosol paint in
accordance with Hartzell Propeller Owner's Manual, p/n 145, revision
1 or later.
Section 10 - Safety Information
No Change.
8 of 8 P/N 13772-152
Original Issue: 02-01-13