CHECKING THE POWER SUPPLY /
FUEL SOLENOID
A. Check Wiring Condition and Tightness
1. Check all wires for cracked or worn insulation.
2. Check all connectors, terminals, and receptacles for
looseness or corrosion. See Figure 1.
B. Battery Tests
GENERAL
If the battery is producing 12 volts and the battery cables
have continuity, the rest of the cranking system can be
systematically tested. However, a full test of the battery
includes cleaning, testing battery charge (hydrometer
test) and testing its ability to deliver current (heavy load
test).
NOTE: Before testing, check the battery for any damage
such as a loose post or cracks. Damaged batteries must
be replaced.
CHECK ELECTROLYTE LEVEL
1. Remove the battery vent cap/caps and make sure the
breather holes are open.
2. Check that fluid is even with the bottom of the split
rings shown in Figure 2. If not, fill with distilled water.
Replace vent cap when done.
TEST BATTERY VOLTAGE
1. Test the battery voltage: set VOM to VDC.
2. Place one test probe of the VOM on the battery’s
positive post and one probe on the negative post.
Note and record the battery voltage as it will be refer-
enced in later tests.
HEAVY LOAD TEST
1. Follow the load tester manufacturer's instructions;
connect the battery tester to the battery.
2. Discharge the battery under a fixed load at three
times the ampere-hour rating for approximately 15
seconds, then read the terminal voltage.
5 Electrical Troubleshooting
Battery & Cable Tests
5 - 6
WARNING
To prevent accidental starting, disconnect and
secure the spark plug wires before conducting
any electrical tests.
WARNING
Unless otherwise instructed, all tests must be
performed with the ground speed control lever in
neutral, the parking brake engaged, an operator
in the seat, and the pto switch off.
CAUTION
Reattach components after each test.
Do not probe components unless specifically
instructed to do so.
To avoid a short circuit and the possibility of
sparks, do not touch the terminals except as
directed.
CAUTION
Battery acid causes severe burns
Figure 3. Battery
A. Positive Battery Terminal C. Vent Tube
B. Negative Battery Terminal D. Holddown Strap
Figure 2. Fill Battery Fluid
❶
To Next Page
Loading...
Need help?
General
