Kohler K91 Owner's Manual page 166

Tecumseh
7
Amp Regulated Charging System (LT-1032)
The Tecumseh
7
amp charging system is similar to the 15 amp
system used on Kohler and Onan engines. Follow the test
procedure for these engines, with the following exceptions:
Test B
-
AC voltage value should be at least
21 VAC. The blower shroud must be
removed, the rectifier/regulator
moved to place it outside the housing,
and the blower housing reinstalled
to
make this test.
Test C
-
Do not perform this test. If AC
voltage check is OK and battery is
not being charged, replace the
rectifier/regulator.
-10-