TP-6196 10/09 23Section 2 Scheduled Maintenance
3. Check the spark plug gap using a wire feeler
gauge. See Figure 2-7 for the recommended gap.
Adjust the gap by carefully bending the ground
electrode. See Figure 2-8 and Figure 2-9.
4. Install the spark plug and tighten it according to the
torque specification in Section 1.5.
Model
Spark P lug Gap
8.5 kW 0.51 mm (0.020 in.)
12 kW 0.76 mm (0.030 in.)
Figure 2-7 Spark Plug Gap
Figure 2-8 Checking the Spark Plug Gap
Figure 2-9 Adjusting the Spark Plug Gap
2.4 Air Cleaner Element and
Precleaner
The engine has a replaceable high-density paper air
cleaner element with an oiled foam precleaner. See
Figure 2-10. Refer to Section 1.7, Service View, for the
air cleaner location.
Wash and oil the precleaner and replace the paper
element at the intervals shown in the service schedule,
Figure 2-1. Service the air cleaner more often if the
generator set operates under dusty or dirty conditions.
Refer to Maintenance and Service Parts in the
Introduction section of this manual for replacement part
numbers.
Keep the area around the air cleaner housing free of dirt
and debris.
Note: Operating the engine with loose or damaged air
cleaner components c ould allow unfiltered air
into the engine, causing premature wear and
failure.
1
2
3
4
5
6
7
586536
1. Cover knob
2. Air cleaner cover
3. Element cover nut
4. Element cover
5. Foam precleaner
6. Air cleaner element
7. Air cleaner base
Figure 2-10 Air Cleaner Components
Air Cleaner Service Procedure
1. Disable the generator set.
a. Place the generator set master switch in the
OFF/RESET position.
b. Disconnect the power to the battery charger.
c. Disconnect the generator set engine starting
battery, negative (--) lead first.
2. Remove the foam precleaner and paper element.
a. Loosen the air cleaner cover retaining knob and
remove the cover.
b. Remove the element cover nut, element cover,
and paper element with precleaner.
c. Remove the precleaner from the paper
element.
3. Wash and oil the foam precleaner.
a. Wash the precleaner in warm soapy water.
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