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Mercury jet 20 User Manual

Mercury jet 20
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83
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MAINTENANCE
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Spark Plug Inspection and Replacement
WARNING
Avoid serious injury or death from fire or explosion caused by damaged
spark plug boots (a). Damaged spark plug boots can emit sparks. Sparks can
ignite fuel vapors under the engine cowl. To avoid damaging spark plug
boots, do not use any sharp object or metal tool such as pliers, screwdriver,
etc. to remove spark plug boots.
1 Remove the spark plug boots (a) by twisting 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. See Specification Chart in General Information Section.
4 Before installing spark plugs, clean away dirt on the spark plug seats. Install
plugs finger tight, and tighten 1/4 turn or torque to 20 lb. ft. (27 N·m).

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Mercury jet 20 Specifications

General IconGeneral
BrandMercury
Modeljet 20
CategoryOutboard Motor
LanguageEnglish

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