Porsche 928 ST1991 Owner's Manual page 60

Gearshifting
manual transmission
The Porsche transmission with servo-lock
synchronisation permits rapid and precise
shifting of gears. When changing gears
make sure that the clutch pedal is fully de-
pressed to the floor, and that the gearshift
lever is completely engaged. The engine
speeds for the individual gears are listed on
this page.
Reverse
Reverse should only be selected after the
vehicle has come to a complete stop.
The clutch pedal must be depressed several
seconds before shifting into reverse; only
then move the gearshift lever to the left, over-
coming the spring resistance, and to the
front.
Both back-up lights come on when the trans-
mission is put into reverse (with ignition on).
The gear positions are illustrated in the diag-
ram.
If you wish to shift from 1st gear into Re-
verse, the gearshift lever must first be
brought into the Neutral position and then
shifted into Reverse. This is necessary be-
cause of the reverse gear
mechanism.
For smooth shifting, observe the following
shift points which apply to standard gear
ratios only:
Maximum downshifting points
5th to 4th gear
143 mph/230 km/h or 5000 rpm
4th to 3rd gear
100 mph/160 km/h or 5200 rpm
3rd to 2nd gear
70 mph/113 km/h or 4800 rpm
2nd to 1st gear
45 mph/ 75 km/h or 4500 rpm
Minimum upshifting points
1st to 2nd gear
lock-out
15 mph/24 km/h or 2200 rpm
2nd to 3rd gear
25 mph/40 km/h or 2400 rpm
3rd to 4th gear
40 mph/64 km/h or 2750 rpm
4th to 5th gear
45 mph/72 km/h or 2300 rpm
Please observe all local and national
speed limits!
I
59