Propeller Replacement - Honda Marine BF25D Owner's Manual

There are two anodes. One anode is
located on the left stern bracket and
the other anode is on the trim tab.
They are made of a sacrificial
material that helps to protect the
outboard motor from corrosion.
Replace the anodes when they have
been reduced to about half their
original size, or if they are crumbling.
Painting or coating the anodes will
def eat their purpose and will lead to
rust and corrosion damage to the
outboard motor. The anodes must be
exposed to the water in order to
protect the outboard motor.
SERVICING YOUR OUTBOARD MOTOR

Propeller Replacement

Before replacing the propeller,
remove the emergency stop switch
clip from the emergency stop switch
to prevent any possibility of the
engine being started while you are
working with the propeller.
The propeller blades may have sharp
edges, so wear heavy gloves to
protect your hands.
Operating the outboard motor at
higher altitudes will reduce available
power. This may require decreasing
the propeller pitch to maintain correct
engine RPM.
Removal
1. Remove the cotter pin, unscrew
the castle nut, remove the plain
washer, then remove the propeller
and thrust washer.
2. Inspect the propeller shaft for any
fishing line or debris.
Installation
1. Apply marine grade grease to the
propeller shaft.
2. Install the thrust washer with the
grooved side toward the gear case.
3. Install the propeller and the plain
washer.
4. Lightly tighten the castle nut by
hand or wrench until the propeller
has no free play.
5. Tighten the castle nut using a
torque wrench.
CASTLE NUT TIGHTENING
TORQUE:
0.7 lbf·ft (1 N·m, 0.1 kgf·m)
6. Then, using a torque wrench,
tighten the castle nut until the first
available groove in the castle nut
aligns with the cotter pin hole. Do
not tighten past the first alignment
of the castle nut groove and the
cotter pin hole.
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