Testing Voltage Regulator For Proper Operation; Starting Motor; Characteristic Curves For Starting Motor Type Dw (L) 12V, 1.1 Kw - Kohler KD225 Workshop Manual

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KD 225_315_350_400_440 Workshop Manual_cod. ED0053029330_1° ed_ rev. 00

Testing voltage regulator for proper operation

Check that connections correspond to the schematic.
Disconnect the terminal from the battery positive pole.
Connect a d.c. voltmeter between the battery poles.
Fit an ammeter between the positive pole and the B+ on voltage re-
gulator.
Start and stop the engine a several times until battery voltage drops
below 13V.
When battery voltage reaches 14.5V the ammeter current should sud-
denly drop down to almost zero.
Replace regulator if recharge current is zero with voltage below
12,5V.
When the engine is running do not disconnect battery cables or
switch key to "off" position.
Keep regulator away from heat sources above 75°C.
Do no electric welding on engine or application.

Starting motor

Bosch type DW (L) 12V, 1.1 KW for KD 315-350-400-440
Bosch type DW (L) 12V, 0.9 KW for KD 225
Anti-clockwise rotation direction (viewed from pinion side)
A = 17.5-19.5 mm (distance from flywheel rim surface to starter motor
flange surface)
Note: Contact Bosch service centers for repair operations.

Characteristic curves for starting motor type DW (L) 12V, 1.1 KW

The curves were obtained at a temperature of -20°C with 66 Ah bat-
tery.
U = Motor terminal voltage in Volts
n = Motor speed in r.p.m.
M = Torque in Nm
J(A) = Absorbed current in Ampere.
ELECTRICAL SYSTEM
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