Mercury Jet 40 Manual page 51

3. Remove the water intake housing that is fastened with six screws.
4. Straighten the bent tabs on the impeller nut retainer and remove the impeller nut.
a - Tabs
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.
MAINTENANCE
b
b -
47
ob00375
ob01411
a
ob01412
Impeller nut