Mercury 250 Specifiche Scaricare il pdf (Pagina 105)

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10.Secure propeller nut by bending three of the tabs into the

thrust hub grooves.

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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 leads by twisting the rubber boots

while pulling them off the spark plugs.

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2. Remove the spark plugs. Replace the spark plug if the

electrode is worn; the insulator is rough, cracked, broken, or

blistered; or if the precious metal is not visible on the spark

plug electrode.

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Mercury 250 Specifiche Pagina 105