Mercury 225 Pro XS User Manual page 79

Avoid engine damage. Prop the engine so engine speed is limited to the
required full throttle rpm range. An under‑propped engine may
occasionally initiate the rev limiter. This may result in internal powerhead
damage.
Applications using 19 spline propeller shafts require the Heavy‑Duty
Propeller Hub kit, included with most Mercury Racing propellers.
Before installing the propeller:
1. Set the remote control into the neutral position.
2. Remove the keys from the ignition and engage the safety stop switch.
3. Coat the propeller shaft with Anti‑Corrosion Grease.
IMPORTANT: To prevent the propeller hub from corroding and seizing to
the propeller shaft, especially in salt water, always apply a coat of the
recommended lubricant to the entire propeller shaft at the recommended
maintenance intervals and also each time the propeller is removed.
To install a propeller for use with a 19 spine propeller shaft:
1. Lubricate the propeller shaft splines.
2. Install the propeller hub assembly, propeller, washer, Belleville
washer, washer, and propeller nut onto the propeller shaft.
a - Propeller hub assembly
b - Propeller
c - Washer
MAINTENANCE
CAUTION
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a
71
d
c
b
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d - Belleville washer
e - Washer
f - Propeller nut
e
f