Master Lock MGR2900A - Manual (Page 12)

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PORTABLE GASOLINE GENERATORS
R
120/2
40V TW
ISTL
OCK
120V TW
ISTL
OCK
120V
GFC
I
120V
VOLT
AGE
HOU
R M
ETE
R
AUT
O-ID
LE
RES
ET
RES
ET
RES
ET
RES
ET
OFF
ON
SEL
ECT
OR
120
ONLY
120
+
240
RES
ET TES
T
ENM
0000000
5 HOU
RS
1/10
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 15).
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.
6. The Auto-Idle system should be turned
OFF when generator is shut down.
WARNING: Always set the idle
speed before turning on the Auto-
Idle. If idle speed is not set, the
larger resistor on the control board
may become hot. Heat from the
resistor may damage the protective
coating on the control board.
Adjusting the Idle Speed
(Models MGR4500I and
MGR6000I)
IMPORTANT: Adjust the idle speed only:
• If the idle speed becomes too high.
• If the engine idle speed will not regulate
(engine wants to “hunt” or speeds up and
slows down repeatedly).
1. Turn Auto-Idle switch OFF. Start en-
gine. Allow engine to warm up with
no load for five minutes.
Figure 15 - Control Panel
Auto-Idle Switch
2. Loosen the two m10 bolts mounting the
solenoid to the engine (see Figures 16
and 17).
3. Connect a volt meter to the 120-volt
duplex receptacle.
4. Fully push plunger into the solenoid
body (to manually engage solenoid)
and slowly slide solenoid back until
the engine is running at the proper
idle speed. At proper idle speed (2800
minimum RPM), the meter should read
45-55 Volts. Lower settings will cause
the Auto-Idle to not operate properly.
5. After reaching proper idle speed,
tighten M10 bolts to secure solenoid.
6. Turn Auto-Idle switch ON. Make sure
solenoid is engaged. When engaged, the
punger is pulled back into the solenoid.
7. If the engine speed is too slow, the
engine will want to “hunt” or speed
up and slow down repeatedly. When
this occurs, increase engine speed by
adjusting the throttle (refer to engines
operation in Engine Manual).
E
F
FUEL
Solenoid Mounting
Bracket M10 Bolts
Solenoid
Figure 17 - Solenoid Bracket Location,
Model MGR6000I
E
F
FUEL
Figure 16 - Solenoid Bracket Location,
Model MGR4500I
Solenoid Mounting
Bracket M10 Bolts
Solenoid