Generac Power Systems RG02224 Owner's Manual page 41

Schedule B Maintenance Item Locations
NOTE: The side of the enclosure with the viewing window
is identified as the rear of the generator set. The right and
Model
Engine
Coolant drain hose
Radiator fill cap
Coolant overflow reservoir
Spark plugs
R = Right side L = Left side B = Both sides T = Top
Cleaning, Gapping, and Replacing Spark Plugs
WARNING
Electric shock. Do not disconnect spark plug
wires with engine running. Doing so could re-
sult in death or serious injury.
Proceed as follows to clean, gap, or replace spark plugs:
1. Remove negative battery cable (black) from nega-
tive (-) battery terminal.
2. See Figure 5-16. Remove spark plug cables from
spark plug terminals (A).
Figure 5-16.
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 ca-
ble 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. Install new
spark plugs if necessary.
Spark-Ignited Stationary Generators Owner's Manual
22 / 27 kW
2.4 L
L
T
L
L
(W000140)
A
left sides are identified by standing at the rear and looking
towards the front of the unit.
25 / 30 kW 32 / 38 kW
1.5 L 2.4 L
R
T
L
R
7. See Figure
wire feeler gauge.
Figure 5-17.
Figure 5-17. Wire Feeler Gauge
Model
Engine
0.028 in
(0.71 mm)
0.035 in
(0.9 mm )
012055
0.042-0.046 in
(1.07-1.17 mm)
8. Adjust spark plug gap by carefully bending ground
electrode towards or away from center electrode as
needed.
9. Finger tighten spark plugs into cylinder head.
10. Tighten spark plug to 18 ft-lbs (25 Nm) using a
spark plug socket.
11. Install spark plug cables onto spark plug terminals.
12. Verify spark plug cables are secured in cable clips
at top of valve cover.
36 / 45 kW
2.4 L
L L
T T
L L
L L
5-17. Inspect spark plug gap using a
Spark Plug Gap
22/27 25/30 32/38
kW kW kW
2.4 L 1.5 L 2.4 L
●
●
●
Maintenance
60 kW
2.4 L
L
T
L
L
000211
36/45 60
kW kW
2.4 L 2.4 L
●
●
41