Product Manual

Maintenance
Owner’s Manual for Stationary Generators 43
Clean/Gap/Replace Spark Plugs
Clean, gap or replace spark plugs as follows:
(000140a)
Electric shock. Do not disconnect spark
plug wires with engine running. Doing so
could result in death or serious injury.
WARNING
1. Remove battery negative cable (black) from battery
negative (-) terminal.
2. Rem
ove spark plug cables from spark plug
terminals (A). See Figure 5-14.
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. Che
ck 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
commercial solvent. Do not blast spark plugs. Use
new spark plugs if necessary.
A
A
B
Figure 5-14. Adjust Spark Plug Gap
7. Che
ck spark plug gap using a wire feeler gauge
(B). Adjust gap by carefully bending ground
electrode as follows:
Spark Plug Gap
Model 22/27 kW 25/30 kW 32/38 kW 36/45 kW 48 kW 60 kW
Engine 2.4L 1.5L 2.4L 2.4L 5.4L 2.4L
0.71 mm (0.028 in.)
• •
0.9 mm (0.035 in.)
•
1.07-1.17 mm (0.042-0.046 in.)
• •
1.29-1.45 mm (0.051-0.057 in.)
•
8. Finger tighten spark plugs into cylinder head, and
then using a spark plug socket, tighten as follows:
Spark Plug Torque
Engine ft-lbs N-m
1.5L, 2.4L
18 25
5.4L
13 18
9. Install sp
ark plug cables onto spark plug terminals.
10. V
erify that spark plug cables are captured in cable
clips at top of valve cover.
Final Instructions
If only performing Schedule A and Schedule B
maintenance procedures, proceed as follows:
1. Insta
ll battery negative cable (black) onto battery
negative (-) terminal.
2. Inst
all left and right side access panels. See
Access Panels.
3. See Return To Service.