Jeep 2007 Commander User Manual download pdf (Page 366)

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Belts should be inspected for evidence of cuts, cracks,

glazing, or frayed cordsand replacedif thereis indication

of damage which could result in belt failure. Low gen-

erator belt tension can cause battery failure.

Also, check belt routing to make sure there is no inter-

ference between the belts and other engine components.

Spark Plugs

Spark plugs must fire properly to assure engine perfor-

mance and emission control. New spark plugs should be

installed atthespecified mileage. The entire setshould be

replaced if there is any malfunction due to a faulty spark

plug. Refer to the “Vehicle Emission Control Informa-

tion” label in the engine compartment for spark plug

information.

Spark Plug Wires

The spark plug wires should be kept clean and properly

connected. Terminals should be fully seated. Cracked,

damaged, or faulty wires should be replaced.

Engine Air Cleaner Filter

Under normal driving conditions, replace the air filter at

the intervals shown on “Maintenance Schedule A.” If,

however, you drive the vehicle frequently under dusty or

severe conditions, the filter element should be inspected

periodically and replaced if necessary at the intervals

shown on “Maintenance Schedule B.”

366 MAINTAINING YOUR VEHICLE

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Jeep 2007 Commander User Manual Page 366

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