2005 PORSCHE 911 CARRERA Owners Manual

Practical Tips, Emergency Service
257
Adjusting HeadlightsfPlease observe the chapter “LIGHTS, REPLA-
CING BULBS” on Page 244.
Adjustment
The adjustment is made with the vehicle ready to
drive and the fuel tank completely filled.
The driver’s seat must be loaded by a person or a
165 lbs. (75 kg) weight and the tire pressures
must meet the prescribed values.
After being loaded, the car must be rolled a few
meters so that the suspension can settle.
For checking the headlight adjustment, the verti-
cal position of the cutoff of the lowbeam (see fig.)
has to be projected on a vertical screen (wall) in
distance of 7.5 m (24.6 ft.) from the front lens of
the headlamp.
The correct position of the cutoff is 5 cm (2.0 in.)
at 7.5 m or 24.6 ft. (0.4°) below a horizontal line,
x cm from ground to the center of the headlamp
lens. Lateral adjustment of the headlights should be
carried out at a specialist workshop with an optical
adjustment unit.
Distance
Visual aim shall be performed at not less than
7.5 m (this value is a rounded down conversion
from the 25-foot distance typical of field aim using
a screen). The 7.5 m (24.6 ft.) distance is meas-
ured from the headlamp lens to the viewing
screen.
f f f

258
Practical Tips, Emergency Service Floor
The surface upon which the vehicle rests is flat
and approximately level.
Screen
The screen upon which headlamp beams are pro-
jected is perpendicular to the floor and the vehi-
cle’s longitudinal axis, flat, uniformly light in color,
unobstructed, and wide and high enough to ac-
commodate the vehicle beam patterns to be
aimed.
The screen should be wide enough to provide at
least 1 m (3.3 ft.) of space outboard of the vehi-
cle’s headlamp spacing.
Adjustment screws
fDetach side carpeting in luggage compart-
ment.
Therefore unscrew plastic nut A.
Open the cover of the appropriate adjustment
screw.
The setting is adjusted by turning the hexagon
socket screws right or left, as appropriate.
B - Headlight vertical adjustmentVertical adjustment (screw B)
fturn clockwise = beam moves down
turn counter-clockwise = beam moves up
Note
fDo not alter the lateral adjustment.

Practical Tips, Emergency Service
259
Towing Certain state statutes and local ordinances prohib-
it towing with a chain, rope or even a tow bar.
In addition, damage to your vehicle may result
from improper procedures.
Consult your authorized Porsche dealer for de-
tails. Vehicle towing Flat bed towing is the preferred type of towing to
be used on Porsche vehicles.
Under certain circumstances, wheel lifts may be
used when the vehicle will not roll.
The vehicle must be towed with all four
wheels off the ground, otherwise damage to
the vehicle may result. Towing hook The towing hook is contained in the tool kit.
Caution!
Risk of damage to the vehicle.
fUse the towing hook only for an emergency to
remove the vehicle off the road. The towing
hook is to be used only to pull the vehicle onto
the flat bed, tractor or towing aparatus if the
vehicle will roll freely. Under no circumstances
is the vehicle to be secured using the towing
hook. fNever use the towing hook to tow this or any
other vehicle.
fBear in mind the limited ground clearance of
your car on uneven surfaces.
Front mounting
The towing hook is A stored in the tool box in the
luggage compartment.
1. Press the lower edge of the appropriate
plastic cover into the bumper until the cover
disengages.
2. Pull cover out of the bumper and let it hang by
its thread.
3. Completely screw in the towing hook.Rear mounting
1. Remove license plate.
2. Unscrew the towing hook A.
3. Insert plastic cover at the lower edge of the
opening.
4. Fold the cover up and press on its upper edge
to engage it in the bumper.
5. Completely screw in the towing hook.

260
Practical Tips, Emergency Service
Pulling vehicle onto flat bed 1. Position wooden ramps at the base of the flat
bed to reduce the angle of the pull.
2. Reel in the hoist cable and check the underside
of the vehicle for any interference.
Tieing down vehicle on flat bed 1. Carefully feed towing straps through the open-
ing in the rear wheels.
Make sure metal parts of straps do not dam-
age rim.
Make sure the strap is flat over the rim bead.
Make sure brake backing plate is not dam-
aged.
2. Secure straps to rear of flat bed.
3. Reel in hoist cable only far enough to tension
tie-down straps. 4. Carefully feed towing straps through the open-
ing in the front wheels.
Make sure metal parts of straps do not dam-
age rim.
Make sure the strap is flat over the rim bead.
Make sure brake backing plate is not dam-
aged.
5. Secure straps to front of flat bed.
6. Release tension on hoist cable, but do not dis-
connect.
Use hoist cable as a safety cable.

Vehicle Identification, Technical Data
261 Vehicle Identification, Technical Data

262
Vehicle Identification, Technical Data
Vehicle Identification When ordering spare parts or making inquiries,
please always quote the vehicle identification
number. Vehicle data bankThe vehicle data bank is attached to the inside of
the “Maintenance” booklet.
It contains all important data about your vehicle.
Note
This data bank cannot be re-ordered if it is lost or
damaged.
This label contains the following information:
1. Vehicle Identification No.
2. Type/Type description
3. Engine code/Transmission code
4. Paint No./Interior
5. Optional equipment
Vehicle identification number In accordance with Federal Safety Regulations,
the vehicle identification number of your car is lo-
cated at the bottom left of the windshield frame
and can be seen from the outside.
The vehicle identification number is in the luggage
compartment under the battery cover and at the
bottom left behind the windshield.
Removing the battery cover
fPlease observe the chapter „BATTERY“ on
page 236.
Safety compliance stickerThe safety compliance sticker is your assurance
that your new Porsche complies with all applicable
Federal Motor Vehicle Safety Standards which
were in effect at the time the vehicle was manufac-
tured.
The sticker also shows the month and year of pro-
duction and the vehicle identification number of
your car (perforations) as well as the Gross Vehi-
cle Weight Rating and the Gross Axle Weight Rat-
ing.

Vehicle Identification, Technical Data
263
Tire pressure plateThe tire pressure plate is attached to the left-hand
door aperture.Paint dataPaint data can be found on the tire pressure plate.
Engine number The engine number is stamped on the underside
of the crankcase.

264
Technical Data
Technical DataEngine data
911 Carrera 911 Carrera S
Type M 96/05 M 97/01
Horizontally opposed engine, liquid cooledHorizontally opposed engine, liquid cooled
Number of cylinders 6 6
Bore 3.78 in./96 mm 3.90 in./99 mm
Stroke 3.26 in./82.8 mm 3.26 in./82.8 mm
Cubic capacity 219.4 cu. in./3596 cm
3 233.3 cu. in./3824 cm
3
Compression ratio 11.3 : 1 11.8 : 1
Net-horsepower, SAE J 1349 325 hp/239 kW 355 hp/261 kW
at crankshaft speed 6800 rpm 6600
Net torque, SAE J 1349 273 ft. lb./370 Nm 295 ft. lb./400 Nm
at crankshaft speed 4250 rpm 4600 rpm
Engine control Stationary high-voltage distribution, sequential injection,
cylinder-selective knock-control, stereo oxygen sensor closed-loop control, diagnostic system,
4 overhead camshafts, Porsche VarioCam Plus, hydraulic valve clearance compensation