Emergency Starting - Porsche 928 1980 Owner's Manual

Emergency starting

with jumper cables
Warnings:
Improper use of a booster battery to start
a car represents an explosion hazard.
Lead-acid batteries generate explosive
gases. Keep sparks, flame and lighted
cigarettes away from batteries.
If battery is frozen, thaw it out first. Other­
wise it may explode, because of gas trap­
ped in the ice.
To avoid serious injury and damage to
car, heed all warnings and instructions of
jumper cable manufacturer. Also see
"cautions".
Make sure the voltage of both batteries is
the same. A 12-Volt battery has 6 vent caps.
Check electrolyte level of each cell. If neces­
sary, fill with distilled water to just above
plates.
The capacity (Ah) of the booster battery
should not be lower than that of the discharg­
ed battery.
Car with discharged battery: turn off lights
and accessories and remove ignition key.
Move shift lever to Ν or Ρ and set the hand
brake.
Car with booster battery should not be runn­
ing. Disconnect ground cable.
Remove vent caps from booster and dis­
charged battery. Preferably lay a cloth over
open vent caps to reduce explosion hazard.
70
How to use jumper cables
The jumper cables must be sufficiently long
for vehicles not to touch. Improper hook up
of jumper cables can ruin the alternator. Al­
ways connect positive (+) to positive (+)
and negative (-) to negative (-).
1. Connect clamp of plus-cable to positive
(+) terminal of discharged battery.
2. Connect clamp on opposite end of cable
to positive (+) terminal of booster battery.
3. Connect clamp of minus-cable to nega­
tive (-) terminal of booster battery.
4. Connect clamp on opposite end of cable
to a bare metal part bolted directly to
the engine block or to the engine block
itself of car with discharged battery.
5. Start engine in the usual manner. If en­
gine fails to start, do not continue to crank
but contact nearest workshop.
6. With engine running, remove jumper
cables from both cars in exact reverse
order: Steps 4 through 1.
Start assist connecting points
On right side of engine compartment you will
find a positive (+) battery post (remote con­
nection). A clamp of the plus-cable can be
attached to this post for emergency start­
ing (+ arrow). A clamp of the negative (-)
cable can be attached to the engine block
or to the bolt on the engine compartment
strut rod (- arrow).
Caution: The cable clamps must not contact
each other, and the plus-cable leading to
the positive (+) post must not contact any
metal part of the car.
Caution: Do not try to start car by pushing
or towing. Damage to the catalytic converter
and other components of the car may result.