Spark Plugs; Air Cleaner Element And Precleaner - Kohler 8.5RES Service Manual

2.3 Spark Plugs

Reset the spark plug gap or replace the plugs with new
plugs as necessary.
Spark Plug Maintenance Procedure
1. Clean the area around the base of the spark plug to
keep dirt and debris out of the engine.
2. Remove the spark plug and check its condition.
Replace the spark plug if it is worn or if its reuse is
questionable.
3. Check the spark plug gap using a wire feeler
gauge. Adjust the gap to 0.76 mm (0.030 in.) by
carefully bending the ground electrode.
Figure 2-5 and Figure 2-6.
4. Install the spark plug and tighten it according to the
torque specification in Section 1.7.
Figure 2-5 Checking the Spark Plug Gap
Figure 2-6 Adjusting the Spark Plug Gap
TP-6196 5/04
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 2-7. Refer to Section 1.8, 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.
See
Keep the area around the air cleaner housing free of dirt
and debris.
Note: Operating the engine with loose or damaged air
cleaner components could allow unfiltered air
into the engine, causing premature wear and
failure.
1. Cover knob
2. Air cleaner cover
3. Element cover nut
4. Element cover
Figure 2-7 Air Cleaner Components
1
2
3
4
5
6
7
5. Foam precleaner
6. Air cleaner element
7. Air cleaner base
Section 2 Scheduled Maintenance
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