12
Test Procedures
TROUBLESHOOTING AND ELECTRICAL SYSTEM:
PEDAL-START GAS VEHICLE
SPECIFIC GRAVITY (TEMPERATURE CORRECTED)
APPROXIMATE STATE OF CHARGE
1.250-1.280
100%
1.220-1.240
75%
1.190-1.210
50%
1.160-1.180
25%
If the difference between the cells is 0.020 or more, the low cell should be suspected. It may require a catch-up charge
or it may be a weak cell. When the variations between cells reach 0.050 or more, the battery should be replaced.
Voltage Test
1.
Take a voltage reading with a multimeter set to 20 VDC by placing the red (+) probe on the positive (+) battery
post and the black (–) probe on the negative (–) battery post. If it shows less than 12.4 volts, or if the lowest
specific gravity reading from the Hydrometer Test is less than 1.225, recharge the battery. If battery voltage is
greater than 12.4 volts and specific gravity is greater than 1.225, the problem is not with the battery. If the battery
does not reach 12.4 volts, or if the specific gravity of a cell is still less than 1.225 after charging, replace the
battery.
See following NOTE.
NOTE:
A fully charged battery that is in good condition should have a specific gravity of at least 1.225 in all cells,
and the difference in the specific gravity of any two cells should be less than 50 points. Open circuit voltage
should be at least 12.4 volts.
Load Test
1.
Connect a 160-ampere load tester to the battery posts.
2.
Turn the switch on the load tester to the ON position.
3.
Read the battery voltage after the load tester has been turned ON for 15 seconds. Compare the battery’s voltage
reading with the following table. Make sure you have the correct ambient temperature.
IF TEMPERATURE IS
MINIMUM CRANKING VOLTAGE
70 °F (20 °C and above)
9.6 V
60 °F (16 °C)
9.5 V
50 °F (10 °C)
9.4 V
40 °F (4 °C)
9.3 V
30 °F (-1 °C)
9.1 V
20 °F (-7 °C)
8.9 V
10 °F (-12 °C)
8.7 V
0 °F (-18 °C)
8.5 V
4.
If the battery is found to be good, or if the electrical problem continues after the battery has been replaced
with a good one, test the electrical circuits.
TEST PROCEDURE 2 – Fuse
See General Warning on page 1-1.
The fuse (red 10-amp) is located in the electrical component box.
1.
Disconnect battery.
See Disconnecting the Battery – Gasoline Vehicles, Section 1, Page 1-3.
2.
Remove the cover from the electrical component box.
3.
Ensure that wires are connected correctly and are tight. If they are not, rewire or tighten as necessary.
Page 12-12
2007-2009 Turf 252, Carryall 252 and XRT 900 Maintenance and Service Manual
