Master Lock MGH8500AIE, MGH10000C Auto-Idle Operation, Adjusting the Idle Speed, Continued

OWNER’S MANUAL

OPERATION

Continued

AUTO-IDLE OPERATION

IMPORTANT: Never start engine with elec- trical loads connected. Start engine before adding electrical loads.

1.If engine is cold, turn the Auto-Idle switch OFF (see Figure 19).

2.Start engine. Allow engine to warm up with no load for five minutes.

3.Turn Auto-Idle switch ON. Engine will slow to idle speed. Engine idle speed is preset. Idle speed adjustment should not be necessary.

4.Operate generator according to speci- fications outlined in owner's manual.

5.Engine will automatically increase to normal operating speed when you plug load into any generator outlet.

MGH8500AIE

Note: MGH10000C Only - The 250 Volt/50 Amp receptacle is not con- nected through the Auto-Idle circuit. The Auto-Idle switch must be turned off to get full power out of this recep- tacle (see Figure 19).

6.The Auto-Idle system should be turned OFF when generator is shut down.

Adjusting the Idle Speed

IMPORTANT: Adjust the idle speed only:

•If the idle speed becomes too high.

•If the engine idle speed will not regulate (en- gine idles and speeds up again and again).

1.Turn Auto-Idle switch OFF. Start en- gine. Allow engine to warm up with no load for five minutes.

WARNING: Always set the idle speed before turning on the Auto- Idle. If idle speed is not set, the largerresistoronthecontrolboard may become hot. Heat from the

Solenoid Bracket

M7 Nuts

Auto-Idle Solenoid

120V
GFCI
R
ES
TE	ET
ST
HOUR	METER
E
NM
00000005
HOURS
	1/10
AUTO-
	IDLE
OFF	ON
RESET

120V

TWISTLOCK120/240V

RESET

TWISTLOCK120V

TWISTLOCK120/240V

resistormaydamagetheprotective coating on the control board.

2.	Locate Auto-Idle solenoid. The Auto-
	Idle solenoid is located between the
	alternator and the engine when viewed
	from the top of the generator (see Fig-
	ure 20).
3.	Loosen two M7 nuts.
4.	Rotate solenoid (located under the
	solenoid bracket) left or right to adjust
	Auto-Idle speed (see Figure 20).
5.	With a volt meter, check the no-load

Figure 20 - Solenoid Bracket Location (MGH10000C Shown)

Auto-Idle Switch

Reset	120	Volt
Reset

RESET

TEST

Off	Auto	Idle
	Sel	On
	ector
	E
	NM
	00000
HOURS 005
		1/10

MGH10000C

	200
	Vp;t
Reset
Reset	Reset
	Reset

output voltage at the 120-volt duplex

receptacle. At proper idle speed (3000

minimum RPM) the meter should read

50-60 volts. Lower settings will cause

the Auto-Idle to not operate properly.

6. After reaching proper idle speed,

tighten M7 nuts to secure solenoid to

mounting bracket (see Figure 20).

Figure 19 - Control Panel

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