Recommended Jump Starting Procedure - Exmark NAVIGATOR Operator's Manual

Maintenance
settings). This is especially important on Kohler
EFI (Electronic Fuel Injection) units. Failure to
do so may damage the ECU (Electronic Control
Unit).
Percent
Voltage
Reading Charge
12.6 or 100%
greater
12.4 – 12.6 75–100%
12.2 – 12.4 50–75%
12.0–12.2 25–50%
11.7–12.0 0–25%
11.7 or less 0%
Important: For Kohler EFI units: Unplug the
harness from the ECU before performing any
welding on the equipment.
Recommended Jump
Starting Procedure
Service Interval: As required
1. Check the weak battery for terminal corrosion
(white, green, or blue "snow"), it must be cleaned
off prior to jump starting. Clean and tighten
connections as necessary.
CAUTION
Corrosion or loose connections can cause
unwanted electrical voltage spikes at anytime
during the jump starting procedure.
Do Not attempt to jump start with loose or
corroded battery terminals or damage to the
engine or EFI may occur.
Maximum Charging
Charger Interval
Settings
No
16 volts/7
Charging
amps
Required
30 Minutes
16 volts/7
amps
1 Hour
16 volts/7
amps
2 Hours
14.4 volts/4
amps
3 Hours
14.4 volts/4
amps
6 Hours or
14.4 volts/2
More
amps
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.
2. Make sure the booster is a good and fully charged
lead acid battery at 12.6 volts or greater. Use
properly sized jumper cables (4 to 6 AWG) with
short lengths to reduce voltage drop between
systems. Make sure the cables are color coded or
labeled for the correct polarity.
CAUTION
Connecting the jumper cables incorrectly
(wrong polarity) can immediately damage the
electrical and/or EFI system.
Be certain of battery terminal polarity and
jumper cable polarity when hooking up
batteries.
Note: The following instructions are adapted
from the SAE J1494 Rev. Dec. 2001 – Battery
Booster Cables – Surface Vehicle Recommended
Practice (SAE – Society of Automotive
Engineers).
WARNING
Batteries contain acid and produce explosive
gases.
• Shield the eyes and face from the batteries
at all times.
• Do Not lean over the batteries.
Note: Be sure the vent caps are tight and level.
Place a damp cloth, if available, over any vent
caps on both batteries. Be sure the vehicles do
not touch and that both electrical systems are
off and at the same rated system voltage. These
instructions are for negative ground systems only.
3. Connect the positive (+) cable to the positive (+)
terminal of the discharged battery that is wired to
the starter or solenoid as shown in Figure 17.
32