Propeller Replacement - Mercury 4 Manual

Propeller Replacement

If the propeller shaft is rotated while the engine is in gear, there is the possibility that the engine will crank over
and start. To prevent this type of accidental engine starting and possible serious injury caused from being struck
by a rotating propeller, always shift outboard to neutral position and remove spark plug leads when you are
servicing the propeller.
1. Remove the spark plug lead to prevent engine from starting.
2. Move gear shift lever into neutral.
3. Straighten and remove cotter pin.
4. Place a block of wood between gearcase and propeller to hold propeller and remove propeller nut.
5. Pull propeller straight off shaft. If propeller is seized to the shaft and cannot be removed, have the propeller
removed by an authorized dealer.
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.
6. Coat the propeller shaft with Quicksilver or Mercury Precision Lubricants Anti-Corrosion Grease or 2-4-C with
Teflon.
7. Install front thrust washer, propeller, rear thrust hub, and propeller nut onto the shaft.
MAINTENANCE
WARNING
!
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