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. Remove spark plug cables from spark plug
te
rminals (A). See Figure 5-14.
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
ap
propriate spark plug socket wrench.
5. Check 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
comm
ercial solvent. Do not blast spark plugs. Use
new spark plugs if necessary.
A
A
B
Figure 5-14. Adjust Spark Plug Gap
7. Check 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 spar
k plug cables onto spark plug terminals.
10. Verify 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. Install battery negative cable (black) onto battery
ne
gative (-) terminal.
2. Install left and right side access panels. See
Acc
ess Panels.
3. See Return To Service.