Mercury GO BOLDLY SeaPro 500hp Operation And Maintenance Manual page 122

7. Align the splines of the rear (3‑blade) propeller with the splines on the
shaft and slide the propeller into place on the inner shaft.
a
a - Large thrust hub
b - Front (4‑blade) propeller
c - Large propeller nut
d - Small thrust hub
e - Rear (3‑blade) propeller
f - Small propeller nut
8. Insert a block of wood between the propeller blades and the
anti‑ventilation plate, to prevent the propeller from turning during
tightening of the propeller nut.
9. Secure the propeller with the small propeller nut. Use a 1‑13/16 in. socket
to tighten the nut to the specified torque.
Description
Small propeller nut
Propeller installation with a block of wood between blades and anti-
MAINTENANCE
b
ventilation plate (typical)
c
d
Nm
135.6
72406
112
e
71705
lb‑in. lb‑ft
– 100
f
eng