Spark Plug Inspection And Replacement - Mercury 200 OptiMax DTS Manual

Spark Plug Inspection and Replacement

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.
1. Remove the spark plug leads. Twist the rubber boots slightly
and pull off.
2. Remove the spark plugs to inspect. Replace spark plug if
electrode is worn or the insulator is rough, cracked, broken,
blistered, or fouled.
3. Set the spark plug gap to specification.
Spark Plug
Spark plug gap
eng
MAINTENANCE
WARNING
!
125
26899
26946
26947
0.80 mm (0.030 in.)