Specifications

43
81
Yellow
Red
DIODE
A.C.
DIODE
Red
D.C.
D.C.
82
Yellow
Models OVM/OVXL/OHV
(Read between Engine and Diode, diag. 81 &
82)
With the engine running the minimum values should
read:
2500 R.P.M. - 20.0 Volts A.C.
3000 R.P.M. - 25.0 Volts A.C.
3300 R.P.M. - 26.5 Volts A.C.
3600 R.P.M. - 29.0 Volts A.C.
Models OHV13.5-17.0
(Read between Engine and Diode)
2500 R.P.M. - 17.0 Volts A.C.
3000 R.P.M. - 21.0 Volts A.C.
3600 R.P.M. - 24.5 Volts A.C.
If low or no voltage is experienced, replace the
alternator. If the alternator puts out the minimum
A.C. voltage, replace the diode.
3 Amp D.C. 5 Amp A.C. Alternator Models: H & HSK 50-60, HH50-60, HM & HMSK 70-80-
90-100, TVM125-140-170-195-220, TVXL195-220
This unit combines a 3 Amp D.C. system used to charge a battery and a 5 Amp A.C. system used for lighting.
Located in the red wire of the harness is a diode which converts the alternating current to direct current for
charging the battery. The yellow wire provides the A.C. voltage for the lighting circuit.
CHECKING THE SYSTEM: To check the system,
disconnect the plug and measure the D.C. voltage
at the red wire terminal (diag. 82). Measure the A.C.
voltage at the yellow wire terminal. With the engine
running the minimum values should be:
3 Amp D.C.
2500 R.P.M. - 8.0 Volts D.C.
3000 R.P.M. - 11.0 Volts D.C.
3600 R.P.M. - 13.0 Volts D.C.
5 Amp A.C.
2500 R.P.M. - 8.0 Volts A.C.
3000 R.P.M. - 11.0 Volts A.C.
3600 R.P.M. - 13.0 Volts A.C.
If the above minimum values are noted, system is
okay. Check for defective lights, wiring or switches.
If less than above values are noted, pull back the
protective shrink tubing from the diode. Using an
A.C. voltmeter, check the voltage between the alter-
nator and diode as shown (diag.83).
(Continued on Next Page)