OWNER’S MANUAL

OPERATION

Continued

AUTO-IDLE OPERATION

IMPORTANT: Never start engine with electrical 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.

Note: MGH10000C Only - The 250 Volt/50 Amp receptacle is not connected through the Auto-Idle circuit. The Auto-Idle switch must be turned off to get full power out of this receptacle (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

Solenoid Bracket

M7 Nuts

Auto-Idle Solenoid

MGH8500AIE

120V

 

GFCI

 

 

 

120V

R

 

 

ES

 

TE

ET

 

 

 

ST

 

HOUR

METER

 

E

 

NM

 

00000005

 

HOURS

 

 

 

1/10

120/240V

O-

TWISTLOCK

AUT

IDLE

 

 

 

OFF

ON

 

 

 

RESET

 

 

 

RESET

Auto-Idle Switch

Reset

120

Volt

 

 

Reset

 

 

RESET

TEST

Off

Auto

Idle

 

 

Sel

On

 

ector

 

E

 

 

NM

 

 

00000

 

HOURS 005

 

 

1/10

MGH10000C

TWISTLOCK120V

TWISTLOCK120/240V

 

200

 

Vp;t

Reset

 

Reset

Reset

 

 

Reset

may become hot. Heat from the 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 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 20 - Solenoid Bracket Location (MGH10000C Shown)

Figure 19 - Control Panel

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