Kohler Command CV730 User Manual download pdf (Page 130)

8.14

Section 8

Electrical System and Components

Figure 8-16. “Pass” Indicator.

**The tester is powered by a 9-volt battery. Most

SAMs are designed to operate down to a minimum

of 7.25 volts. If the tester battery drops below that

level, incorrect test readings will result. The tester

battery should be checked periodically by

connecting a DC voltmeter between the red and

green lead wires, with the tester connected to a

SAM. Press and hold the test button for a full test

cycle (‘‘F’’ or ‘‘P’’ appears and then display shuts

off), while monitoring the voltage reading on the

voltmeter. If the voltage drops below 7.5 at any time

during the cycle, the 9-volt tester battery must be

replaced. Use an extended life (alkaline) battery.

To replace the battery, remove the outer set of screws

on the faceplate and carefully lift the panel from the

body. Unplug the connector and pull battery (with

mounting tape) off the back of the tester. Attach the

connector to the new battery and mount the battery to

the case with double-backed tape. Reinstall the

faceplate and secure with the four screws.

Battery Charging System

General

Most engines are equipped with a 15 or 20 amp

regulated charging system. Some have a 25 amp

regulated charging system. See Figure 8-17 and 8-18

for the 15/20/25 amp charging system diagram. Some

engines utilize a 3 amp unregulated system with

optional 70 watt lighting circuit. Refer to Figure 8-23.

NOTE: Observe the following guidelines to avoid

damage to the electrical system and

components:

• Make sure the battery polarity is correct. A

negative (-) ground system is used.

• Disconnect the rectifier-regulator plug and/or the

wiring harness plug before doing any electric

welding on the equipment powered by the

engine. Also, disconnect all other electrical

accessories in common ground with the engine.

• Prevent the stator (AC) leads from touching or

shorting while the engine is running. This could

damage the stator.

Figure 8-15. Select Test Number.

4. If you get a “-“ sign instead of the numerical

sequence, and/or an “F” at the end of the test

cycle, recheck all of the connections, check the

condition of the tester battery** and repeat the

test. If you get the “-“or “F” sign again in the

retest replace the SAM.

*IMPORTANT!

Allow 15-20 seconds for the tester to clear and reset

itself between tests or if the test is interrupted before

completion of the test cycle. Otherwise, a false reading

may be displayed in the form of a “-” or a faint “8”.

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Kohler Command CV730 User Manual Page 130

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