Schumacher BT-100 User Manual
Page 5
STARTER MOTOR TEST
1.
Connect clamps to battery posts and do the basic
battery test. In addition, note the exact voltage with the
load test on. If voltage continues to fall after 10 seconds,
this test cannot be preformed.
2.
Apply the voltage obtained above to starter test table
on the scale plate. In this case, please use the next
higher minimum cranking volts for the engine of less
than 200 CID. For example, if load voltage is 11.00,
use 10.2 for minimum cranking voltage.
LOAD
10.2
10.4
10.6
10.8
11.0
11.2
11.4
VOLTS
MIM CRANK
7.7
8.2
8.7
9.2
9.7
10.2
10.6
VOLTS
STARTER
TEST
3.
Disable the ignition system without starting, crank the
engine and note the voltage.
4.
If cranking voltage of Step 3 is below the minimum
cranking voltage in starter test table, the starter current
draw is excessive. If starter cranks slowly, check for
high resistance or poor connections.
3