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Mercury 20 - Propeller Replacement

Mercury 20
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MAINTENANCE
47
ob01408
Corrosion Control Anode
Your outboard has a corrosion control anode installed to the gearcase. An anode helps protect the outboard
against galvanic corrosion by sacrificing its metal to be slowly corroded instead of the outboard metals.
The anode requires periodic inspection especially in salt water which will accelerate the erosion. To maintain
this corrosion protection, always replace the anode before it is completely eroded. Never paint or apply a
protective coating on the anode as this will reduce effectiveness of the anode.
ob01187
Propeller Replacement
!
WARNING
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.

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