Product Manual

18
Caterpillar: Confidential Green
replaced after every 100 hours of operation or if it
becomes damaged.
Remove screws (1). Remove spark arrestor (2)
Check the spark arrestor for damage. Carefully clean
the spark arrestor with a soft wire brush. If the spark
arrestor is damaged, replace the spark arrestor.
To install the spark arrestor, align the mounting holes
in the spark arrestor with the mounting holes on the
muffler. Insert screws (1) and tighten securely.
Spark Plug – Inspect/Adjust/Replace
Refer to the Specifications section of this manual to
determine the proper spark plug part number and
spark plug gap for your product.
1. DO NOT perform this maintenance procedure
with the engine running.
2. Turn the generator switch to the off “O” position.
3. Remove the side panel as per the Air Filter –
Check procedure.
4. Remove the spark plug boot (1) by pulling it off
the top of the spark plug.
5. Use the plug wrench (2) or a spark plug socket to
remove the spark plug (3).
6. Visually check the spark plug to see if it is
damaged. If the insulator is cracked, replace the
spark plug. If the electrode is damaged, replace
the spark plug.
7. Measure the plug gap (4) with a feeler gauge.
Adjust the gap as necessary by carefully
bending the electrode. Refer to Specifications
for the correct gap for your product.
8. Install the spark plug by hand and then tighten to
9 ± 2 lb ft (12.5 ± 2 Nm). DO NOT overtighten as
this may damage the engine.
9. Re-attach the spark plug boot and side panel.
Walk-Around Inspection
Before starting the engine perform a visual inspection
of the unit. Look for:
• Proper oil level
• Proper fuel level
• Good quality fuel
• Fluid leaks
• Loose clamps
• Loose bolts
• Cracked fuel line
• Loose or frayed wiring
• Built up debris
In addition, make sure that:
• The ground terminal is properly connected