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Mercury 40 jet fourstroke - Spark Plug Inspection and Replacement

Mercury 40 jet fourstroke
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MAINTENANCE
eng 93
Spark Plug Inspection and Replacement
!
WARNING
Damaged spark plug boots may emit sparks that 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.
1. Remove the spark plug boots. Twist the rubber boots slightly
and pull off.
26899
2. Remove the spark plugs to inspect. Replace spark plug if
electrode is worn or the insulator is rough, cracked, broken,
blistered, or fouled.
26946
3. Set the spark plug gap to specification.
26947
Spark Plug
Spark plug gap 1.0 mm (0.040 in.)

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