User Manual
11
114716
OWNER’S MANUAL
CLOSED
OPEN
Figure 12 - Engine Switch In ON Position
ENGINE SW
 ON
OFF
OPERATION
Continued
Fuel Valve Lever (ON Position)
Choke Lever (Closed Position)
Figure 10 - Fuel Valve Lever On, Choke 
Lever Closed (Model MGR4500I Shown)
Note: If oil level is too low, oil alert system 
will keep engine from starting (see Oil Alert 
System, page 6). Make sure oil level is full 
before starting. See Engine Oil, page 7.
Before  starting  the  engine,  disconnect  all 
electric loads from generator. 
STARTING
IMPORTANT: The engine speed is preset. 
The throttle is locked in preset position. Do 
not adjust throttle. Preset position lets engine 
run at 3600 RPM  under load. The engine 
must maintain 3600 RPM for generator to 
create  correct  voltage.  Running  engine  at 
lower  speeds  will  damage  generator  and 
powered items.
IMPORTANT:  Never start generator with 
electrical  loads  connected.  Start  engine 
before adding electrical loads.
1.  Make  sure  gasoline  tank  is  full.  See 
Fuel, page 7 for fuel information. 
2.  Move fuel valve lever to the ON posi-
tion except on Model MGR6000I (see 
Figure 10).
3.  Move choke lever fully to the left for all 
models except MGR6000I (see Figure 
10). Pull choke button out for Model 
MGR6000I  (see Figure 11). This closes 
the choke.
  Note: You may not need to close choke 
if engine is warm or air temperature is 
high.
 WARNING: Only responsible 
adults  should  use  generator. 
Never let anyone operate genera-
tor without proper instructions.
PRESTART
Operate generator on a firm, dry, and clean 
surface. The surface must be level. Protect 
generator from heavy dust, sand, dirt, rain, 
or snow.  Do  not  locate generator  near 
standing water and  snow. Make sure area 
is well-vented.
4.  Start the engine.
  Turn engine switch to the ON position 
(see  Figure  12).  Remove  slack  from 
starter  rope  by  lightly  pulling  starter 
grip. Next, pull starter rope briskly.
  IMPORTANT:  Do not  let  starter grip 
snap back against engine. Return it gen-
tly. This will prevent damage to starter.
  Note: If  engine does not  start, check 
the  oil  in  the  crankcase. Add  oil  as 
necessary. Be sure engine is on a level 
surface. See Oil Alert System, page 6.
5.  As engine warms up, slowly move choke 
lever fully to the right (see Figure 13) 
(all models  except  MGR6000I). This 
opens the choke. On Model MGR6000I, 
slowly push in choke button until fully 
depressed (see Figure 14).
Continued
Figure 11 - Choke Lever Closed  (Model 
MGR6000I Shown)
Choke Lever (Closed Position)
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OPEN
Fuel Valve Lever (ON Position)
Choke Lever (Open Position)
Figure 13 - Choke Lever Opened  (Model 
MGR4500I Shown)
Figure 14 - Choke Lever Opened (Model 
MGR6000I Shown)
Choke Lever (Open Position)










