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Filter
Air
lter
A dirty air filter not only reduces engine perform-
ance, but can lead to premature engine wear.
Regular filter replacement is part of the routine
maintenance service.
In dusty conditions, check the filter element
more frequently and replace if necessary.
Combination
lter
The fresh air passing through the combination filter
into the passenger compartment is virtually free of
dust, pollen, and unpleasant odors.
If the outside air is polluted by exhaust fumes,
press the recirculating-air button.
A dirty filter can be the cause of reduced air flow:
Have filter replaced by your authorized
Porsche dealer.
Regular filter replacement is part of the routine
maintenance service.
252
Maintenance, Car Care
Summary of Contents for 911 CARRERA 4 -
Page 1: ...911 Carrera Owner s Manual ...
Page 2: ......
Page 12: ...10 ...
Page 14: ...12 ...
Page 87: ...Controls Instruments 85 ...
Page 94: ...92Controls Instruments ...
Page 96: ...94Controls Instruments ...
Page 114: ...D Selection eld E Continuation arrow symbols 112Controls Instruments ...
Page 176: ...Pen holder A pen can be clipped in on the right side of the CD holder 174Controls Instruments ...
Page 192: ...190Controls Instruments ...
Page 232: ...230Mobile Roofs ...
Page 326: ...324Practical Tips Emergency Service ...
Page 346: ...Engine diagram at full power engine type M96 05 344Vehicle Identification Technical Data ...
Page 347: ...Engine diagram at full power engine type M97 01 Vehicle Identification Technical Data 345 ...