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Mercury 9.9 - Spark Plug Inspection and Replacement

Mercury 9.9
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MAINTENANCE
85
The electric starting circuit is protected from overload by a 20 AMP
fuse. If the fuse is blown try to locate and correct the cause of the
overload. If the cause is not found, the fuse may blow again.
a
b
28618
a - Spare fuse b - Circuit protecting fuse
1. Open the fuse holder and look at the silver colored band inside
the fuse. If band is broken, replace the fuse. Replace fuse with
a new fuse with the same rating.
a
b
28619
Identifying a blown fuse
a - Good fuse b - Blown fuse
Spark Plug Inspection And Replacement
!
WARNING
Damaged spark plug boots may emit sparks which can ignite fuel
vapors under the engine cowl, resulting in serious injury or death
from a fire or explosion. To avoid damaging the spark plug boots,
do not use any sharp object or metal tool to remove the spark
plug boots.

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