Propeller Replacement - Mercury 150 Manual

3. Make sure the battery is secure against movement.
4. Battery cable terminals should be clean, tight, and correctly installed. Positive to positive and
negative to negative.
5. Make sure the battery is equipped with a non-conductive shield to prevent accidental shorting of
battery terminals.

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. Shift outboard to neutral (N) position.
IMPORTANT: Refer to Spark Plug Inspection and Replacement for removing spark plug leads.
2. Remove spark plug leads to prevent engine from starting.
3. Straighten the bent tabs on the propeller nut retainer.
MAINTENANCE
WARNING
!
N
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