Mercury GO BOLDLY SeaPro 500hp Operation And Maintenance Manual page 121

PROPELLER INSTALLATION
Accidental engine starting can cause serious injury or death. Remove the key
from the ignition switch and engage the lanyard stop or E‑stop switch to
prevent the engine from starting when performing service or maintenance on
the power package.
IMPORTANT: Mercury Marine V12 propellers are matched sets. Do not
operate the engine without a front and rear propeller of the same pitch.
1. Apply a liberal amount of Extreme Grease to all splined, threaded, and
tapered surfaces on the propeller shaft, thrust hubs, propeller nuts, and
propeller hubs.
Description
Extreme Grease
2. Slide the large thrust hub onto the outer propeller shaft with the tapered
end of the hub facing rearward.
3. Align the splines of the front (4‑blade) propeller with the splines on the
shaft and slide the propeller into place on the outer shaft.
4. 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.
5. Install the large propeller nut and tighten the nut to the specified torque
using a propeller nut tool.
Propeller Nut Tool
Description
Large propeller nut
6. Slide the small thrust hub onto the inner propeller shaft with the tapered
end of the hub facing rearward.
eng
MAINTENANCE
WARNING
!
Where Used
Inner and outer propeller shaft splines, large
thrust hub, small thrust hub, large propeller nut,
small propeller nut, front propeller hub, rear
propeller hub
71752
111
8M0171389
Aids in the removal and installation of
the large propeller nut.
Nm lb‑in.
339 –
Part No.
8M0071842
lb‑ft
250