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Mercury 25 Jet 4-Stroke - Page 79

Mercury 25 Jet 4-Stroke
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MAINTENANCE
73
5. Straighten the bent tabs on the impeller nut retainer and
remove the impeller nut.
a
b
ob01412
a - Tabs b - Impeller nut
6. Pull the impeller straight off the shaft. If the impeller is tight,
use a hammer and a block of wood to rotate the impeller
clockwise on the shaft until the keyway is directly above the
flat on the shaft. This will free the jammed key and allow
removal.
INSTALLATION
1. Lubricate the driveshaft, shear key, and impeller bore.

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