Multi Pro 1200/1250
Page 5 -- 7
Electrical System
Electrical System Quick Checks
Battery Test (Open Circuit Test)
Use a multimeter to measure the voltage between the
battery terminals.
Set the multimeter to the DC volts setting. The battery
should be at a temperature of 60
o
to 100
o
F(16
o
to 38
o
C). The ignition key should be in the OFF position and
all accessories turned off. Connect the positive (+) me-
ter lead to the positive battery post and the negative (--)
meter lead to the negative battery post.
NOTE: Thistestprovidesarelativeconditionofthebat-
tery. Load testing of the battery will provide additional
and more accurate information.
Voltage Measured
Battery Charge Level
12.68 v (or higher) Fully charged (100%)
12.45 v 75% charged
12.24 v 50% charged
12.06 v 25% charged
11.89 v 0% charged
Charging System Test
Thisisasimpletestusedtodetermineifac hargingsys-
temisfunctioning.Itwilltellyouifachargingsystemhas
an output, but not its capacity.
Tool required: Digital multimeter set to DC volts.
Test instructions: Connectthepositive (+) meter lead to
thepositivebatterypostandthenegative(-- ) meterlead
to the negative battery post. Leave the test leads con-
nected and record the battery voltage.
NOTE: Upon starting the engine, the battery voltage
will drop and then should increase once the engine is
running.
NOTE: Depending upon the condition of the battery
charge and battery temperature, the charging system
voltage will increase at different rates as the battery
charges.
Start the engine and run at high idle (3275 to 3425
RPM). Allow the battery to charge for at least three (3)
minutes. Record the battery voltage.
Testresultsshouldbeatleast0.50voltoverinitialbat-
tery voltage. Example:
Initial Battery Voltage
= 12.30 v
Battery Voltage after 3 Minute Charge = 12.95 v
Difference = +0.65 v
NOTE: Typical battery voltage while the engine is run-
ning during this test should be 13.5 to 14.5 volts.
Check Operation of Neutral Switch
CAUTION
Do notdisconnect neutral switch. It isfor the op-
erator’s protection. Check the operation of the
neutral switch daily for proper operation. Re-
place a malfunctioning switch before operating
the machine.
Neutral switch operation is described in the Multi Pro
1200and1250Operator’sManual.Testingofthisswitch
is included in the Component Testing section of this
chapter.
Electrical
System
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