Hartzell HC-E3YR-7 Owner's Manual page 141

(6) If the propeller will be reinstalled and it has been
dynamically balanced, make an identifying mark (with a
felt-tipped pen only) on the propeller hub and a matching
mark on the engine flange to make sure of correct
positioning of the propeller during re-installation.
NOTE:
CAUTION:
(7) Remove the six 1/2 inch mounting studs from the engine
bushings.
(a) If the propeller is removed between overhaul
intervals, mounting studs, nuts and washers may be
reused if they are not damaged or corroded.
CAUTION:
(8) Using the support sling, remove the propeller from the
mounting flange.
(9) Put the propeller on a cart for transport.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
This will prevent dynamic imbalance.
DISCARD THE PROPELLER MOUNTING
STUDS, NUTS, AND WASHERS IF THEY
ARE DAMAGED OR CORRODED, OR
WHEN THE PROPELLER IS REMOVED
FOR OVERHAUL.
REMOVE THE PROPELLER FROM THE
MOUNTING FLANGE WITH CARE TO
PREVENT DAMAGING THE PROPELLER
MOUNTING STUDS.
136
61-00-36
Page 3-65
Rev. 2 Feb/17