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DANGER
Jump starting a weak battery that is cracked,
frozen, has low electrolyte level, or an
open/shorted battery cell, can cause an
explosion resulting in serious personal injury.
Do not jump start a weak battery if these
conditions exist.
WARNING
Batteries contain acid and produce explosive
gases.
• Always shield your eyes and face from the
battery.
• Do not lean over the batteries.
Preparing to Jump Start the
Battery
CAUTION
Corrosion or loose connections can cause
unwanted electrical voltage spikes at any time
during the jump starting procedure.
Do Not attempt to jump start with loose or
corroded battery terminals or damage to the
engine may occur.
1.
Check the cable clamps and battery terminals
of the discharged battery for corrosion (white,
green, or blue "snow") and check that the
hardware for the clamps is tight.
Clean corrosion from the battery terminals and
cable clamps.
2.
Check that the hardware for the cable clamps
is tight.
Tighten the cable-clamp hardware as needed.
3.
Check that the vent caps on the discharged
battery and booster battery are tight and level.
4.
If available, place damp clothes over the vent
caps of both batteries.
5.
If you are jump starting from the battery in
another vehicle, ensure that it has a 12 V lead
acid battery.
Important:
Ensure that the 2 vehicles do
not touch.
6.
Ensure that the booster battery is fully charged
with 12.6 V or greater.
7.
Select properly sized jumper cables (4 to 6
AWG) with short lengths to reduce voltage drop
between systems.
Choose jumper cables with color coded or
polarity labeled cables or clamps.
Connecting the Jumper Cables
CAUTION
Connecting the jumper cables incorrectly
(wrong polarity) can immediately damage the
electrical system.
Be certain of battery terminal polarity and
jumper cable polarity when hooking up
batteries.
1.
Connect the positive jumper cable—red (+) to
the positive-battery terminal of the discharged
battery as shown in
Note:
The positive-battery terminal is wired to
the starter or solenoid
1. Positive (+) jumper cable
at the discharged battery
2. Positive (+) jumper cable
at the booster battery
3. Negative (–) jumper cable
at the booster battery
4. Negative (–) jumper cable
to the engine block (the
machine with a discharged
battery)
2.
Connect the other end of the positive cable
to the positive-battery terminal of the booster
battery
(Figure
3.
Connect the negative jumper cable—black (–)
to the negative-battery terminal of the booster
battery.
4.
At the machine with a discharged battery,
connect the other end of the negative jumper
cable to the engine block, at a location away
from the battery and belts
37
Figure
43.
Figure 43
5. Booster battery
6. Discharged battery
7. Engine block (the machine
with a discharged battery)
43).
(Figure
43).
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