Product Manual

Maintenance
Owner’s Manual for Spark-Ignited Stationary Generators 33
17. Press MANUAL on control panel to start engine. A
blue LED illuminates to verify system is in MAN-
UAL.
18. Allow engine to run until thermostat opens, as indi-
cated by heating of top radiator hose.
19. Inspect coolant hoses for leaks. Tighten clamps, if
necessary.
20. Press OFF on control panel to shut engine down.
21. Allow engine to cool.
22. Repeat steps 4–21 to drain and refill cooling sys-
tem.
23. Slowly unscrew radiator cap. Slowly pour coolant
into filler neck until radiator is full.
24. Add coolant to the overflow reservoir. See Inspect-
ing Coolant Level and Hoses.
25. Install plastic cover at top of enclosure and rotate
until tight.
26. Inspect hoses for nicks, cuts, tears, or general
deterioration. Replace as necessary.
Clean/Gap/Replace Spark Plugs
Proceed as follows to clean, gap, or replace spark plugs
as follows:
1. Remove negative battery cable (black) from nega-
tive battery (-) terminal.
2. See Figure 5-16. Remove spark plug cables (C)
from spark plug terminals (D).
Figure 5-16. Remove Spark Plug Cables
NOTE: When disconnecting spark plug cable from spark
plug terminal, always grasp and pull on the boot at the
terminal end of the cable. Pulling on cable portion can
result in parts damage.
3. Thoroughly clean area around spark plugs.
4. Remove spark plugs from cylinder head using an
appropriate spark plug socket wrench.
5. Inspect condition of threads in cylinder head and
on spark plugs. If necessary, soften deposits with
penetrating oil and clean out with a thread chaser.
6. Clean spark plugs using a wire brush and commer-
cial solvent. Do not blast spark plugs. Use new
spark plugs if necessary.
7. See Figure 5-17. Inspect spark plug gap using a
wire feeler gauge. Adjust gap by carefully bending
ground electrode as follows:
Figure 5-17. Adjusting Spark Plug Gap
8. Finger tighten spark plugs into cylinder head, and
then using a spark plug socket, tighten as follows:
9. Install spark plug cables onto spark plug terminals.
10. Verify spark plug cables are captured in spark plug
cable clips at top of valve cover.
Final Instructions
Proceed as follows if only performing Schedule A and
Schedule B maintenance procedures:
1. Install negative battery cable (black) onto negative
battery (-) terminal.
2. Install left and right side access panels. See
Access Panels.
3. See Return To Service.
(000140a)
WARNING
Electric shock. Do not disconnect spark
plug wires with engine running. Doing so
could result in death or serious injury.
010082
C
D
Model Engine Spark Plug Gap
48 kW / 60 kW / 80 kW 4.5L
0.012–0.017 in
(0.31–0.45 mm)
Spark Plug Torque
Engine ft-lbs Nm
4.5L
28 38