Air Filter Element Maintenance

1.The air cleaner cover is held in place by a wing nut or clamps. Remove it.

2.Remove the air filter element.

3.Cleaning:

a.For “paper” filter elements:

To prevent injury from dust and debris, wear ANSI-approved safety goggles, NIOSH-approved dust mask/respirator, and heavy-duty work gloves. In a well-ventilated area away from bystanders, use pressurized air to blow dust out of the air filter.

If this does not get the filter reasonably clean, replace it.

b.For foam filter elements:

Wash the element in warm water and mild detergent several times. Rinse. Squeeze out excess water and allow it to dry completely. Soak the filter in lightweight oil briefly, then squeeze out the excess oil.

4.Install the new filter or the cleaned filter. Secure the Air Cleaner Cover before use.

Spark Plug Maintenance

1.Disconnect spark plug wire from end of plug. Clean out debris from around spark plug.

2.Using a spark plug wrench, remove the spark plug.

3.Inspect the spark plug:

If the electrode is oily, clean it using a clean, dry rag.

If the electrode has deposits on it, polish it using emery paper.

If the white insulator is cracked or chipped, the spark plug needs to be replaced.

4.When installing a new spark plug, adjust the plug’s gap to the specification on the Technical specification chart. Do not pry against the electrode, the spark plug can be damaged.

5.Install the new spark plug or the cleaned spark plug into the engine. Gasket-style: Finger-tighten until the gasket contacts the cylinder head, then about 1/2-2/3 turn more. Non-gasket-style: Finger-tighten until the plug contacts the head, then about 1/16 turn more.

6.Apply dielectric spark plug boot protector (not included) to the end of the spark plug and reattach the wire securely.

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For technical questions, please call 1-800-444-3353.

SKU 67596

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Harbor Freight Tools 67596 manual Air Filter Element Maintenance, Cleaning, Spark Plug Maintenance