Hartzell HC-B3-2 Series Owner's Manual And Logbook page 130

CAUTION 1:
CAUTION 2:
(8) Slide the propeller onto the engine flange.
Engine Flange
Fillet
Installing the Washer on the Mounting Stud
INSTALLATION AND REMOVAL
Propeller Owner's Manual
MAKE SURE THAT COMPLETE AND TRUE
SURFACE CONTACT IS ESTABLISHED
BETWEEN THE SPACER AND THE
ENGINE FLANGE.
IF THE C-7364-2 SPACER IS NOT
ATTACHED TO THE HUB, MAKE SURE
THE HUB-TO-SPACER O-RING STAYS
IN THE GROOVE IN THE SPACER. IF
THE O-RING IS TWISTED OR PINCHED,
OIL LEAKAGE WILL RESULT WHEN THE
PROPELLER IS OPERATED ON THE
AIRCRAFT.
OD Chamfer
Figure 3-10
139
Washer
Stud
Engine Shaft
61-00-39
Rev. 17 Apr/20
Page 3-30