Use and Care 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. Allo
w engine to run until thermostat opens, as indi-
cated by heating of top radiator hose.
19. In
spect coolant hoses for leaks. Tighten clamps, if
necessary.
20. Pr
ess OFF on control panel to shut engine down.
21. Allo
w 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. Inspe
ct hoses for nicks, cuts, tears, or general
deterioration. Replace as necessary.
Clean/Gap/Replace Spark Plugs
(000140a)
Electric shock. Do not disconnect spark
plug wires with engine running. Doing so
could result in death or serious injury.
WARNING
Proceed as follows to clean, gap, or replace spark plugs
as follows:
1. Rem
ove negative battery cable (black) from nega-
tive battery (-) terminal.
2. See Figure 5-15. Remove spark plug cables (C)
from spark plug te
rminals (D).
010082
C
D
Figure 5-15. Remove Spark Plug Cables
NOTE: Wh
en 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. Th
oroughly clean area around spark plugs.
4. Remo
ve spark plugs from cylinder head using an
appropriate spark plug socket wrench.
5. Inspe
ct 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. Clea
n spark plugs using a wire brush and commer-
cial solvent. Do not blast spark plugs. Use new
spar
k plugs if necessary.
7. See Figure 5-16. Inspect spark plug gap using a
wire feeler gauge. Adjust gap by carefully bending
gr
ound electrode as follows:
000211
Figure 5-16. Adjusting Spark Plug Gap
Model Engine Spark Plug Gap
8. Finger tighten spark plugs into cylinder head, and
then using a spark plug socket, tighten as follows:
Spark Plug Torque
Engine ft-lbs Nm
4.5L
28 38
9. Insta
ll spark plug cables onto spark plug terminals.
10. V
erify 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. Insta
ll negative battery cable (black) onto negative
battery (-) terminal.
2. Inst
all left and right side access panels. See
Access Panels.
3. See Return To Service.
48 kW 4.5L
0.012–0.017 in
(0.31–0.45 mm)