Operating Guide
Maintenance
28 Owner’s Manual for 60 Hz Air-Cooled Generators
Figure 4-2. Oil Filter and Drain Location (13–16 kW)
Figure 4-3. Oil Filter and Drain Location (20–22 kW)
3. Install cap on oil drain hose. Position and secure oil 
drain hose with a retaining clip.
4. Remove oil filter (B) by turning it counterclockwise.
5. Apply a light coating of clean engine oil to gasket of 
new filter.
6. Screw new filter on by hand until gasket lightly con-
tacts  oil  filter  adapter.  Tighten  filter  an  additional 
three-quarter to one full turn.
7. Fill engine with recommended oil. See Engine Oil 
Requirements.
8. Press  MANUAL button on  control  panel  to  start 
engine. Run for one minute, and inspect for leaks.
9. Press OFF button on control panel to stop engine. 
Wait five minutes.
10. Inspect  oil  level.  Add  oil  as  needed.  DO  NOT 
OVERFILL.
11. Insert oil dipstick and/or attach fill cap.
12. Press AUTO button on control panel to return unit 
to AUTO.
13. Close and lock lid.
14. Dispose of used oil and filter according to national, 
state, or local codes.
Servicing the Air Cleaner
Proceed as follows to service air cleaner:
1. Lift  lid  and  press  OFF  button  on  control  panel  to 
stop generator. Remove front panel. 
2. See Figure 4-4 or Figure 4-5. Remove cover clips 
(A) and air cleaner cover (B).
Figure 4-4. Servicing Air Cleaner (10 kW)
Figure 4-5. Servicing Air Cleaner (13–22 kW)
3. Remove old air filter element (C) and discard.
4. Thoroughly clean air cleaner enclosure of any dust 
or debris.
5. Install a new air filter element.
6. Install air cleaner cover and fasten cover clips.
7. (13-22  kW  units  only):  Verify  air inlet  duct (D)  is 
correctly connected to air cleaner cover.
8. Press AUTO button on control panel to return unit 
to AUTO.
Spark Plug(s)
Proceed as follows to inspect spark plug gap(s) and 
replace spark plug(s) as necessary:
1. With  generator  OFF  and  engine  cool,  lift  lid  and 
remove front panel.
2. Clean  area  around  base  of  spark  plug(s)  to  keep 
dirt and debris out of engine.
009342
009342
B
A
009343
B
A
A
B
C
001820
001814
B
A
C
D










