Mercury Jet 40 - Page 51

MAINTENANCE
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3. Remove the water intake housing that is fastened with six screws.
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4. Straighten the bent tabs on the impeller nut retainer and remove the impeller nut.
a
b
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a - Tabs b - Impeller nut
5. Pull impeller straight off the shaft. If the impeller is tight, use a hammer and 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. Grease the driveshaft, shear key, and impeller bore.
2. Place the plastic sleeve inside the impeller.
3. Install impeller, shear key, shims, nut retainer, and impeller nut.