Lincoln Electric IM919 manual Air Filter Paper Element, Spark Plug Service, Maintenance

D-3 MAINTENANCE D-3

AIR FILTER PAPER ELEMENT

1.Loosen the cover retaining knob and remove the cover.

2.Remove the pre-cleaner from the paper element.

3.Remove the element cover nut, element cover, and paper element.

4.Do not wash the paper element or use pressurized air, as this will damage the element. Replace a dirty, bent, or damaged element with a new ele- ment. Handle new elements carefully; do not use if the sealing surfaces are bent or damaged.

5.When servicing the air cleaner, check the air clean- er base. Make sure it is secured and not bent or damaged. Also check the element cover for dam- aged or improper fit. Replace all damaged air cleaner components.

NOTE: Before air cleaner is reassembled make sure rubber seal is in position around stud. Inspect, making sure it is not damaged and seals with the element cover.

6.Reinstall the paper element, pre-cleaner, element cover, element cover nut, and air cleaner cover. Secure cover with the cover retaining knob.

SPARK PLUG

To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.

WARNING

NOTE: Before removing spark plug, the muffler becomes very hot during operation and remains hot for a while after stopping the engine. Be care- ful not to touch the muffler while it is hot.

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SPARK PLUG SERVICE

To ensure proper engine operation, the spark plug must be properly gapped and free of deposits.

1.Remove the spark plug cap.

2.Clean any dirt from around the spark plug base.

3.Use a plug wrench to remove the spark plug.

4.Visually inspect the spark plug. Discard them if the insulator is cracked or chipped. Clean the spark plug with a wire brush if it is to be reused.

5.Measure the plug gap with a feeler gauge. Correct as necessary by bending the side electrode.

6.Check that the spark plug washer is in good condi- tion and thread the spark plug in by hand to prevent cross-threading.

7.After the spark plug is seated, tighten with a spark plug wrench to compress the washer. (See proper spark plug torque which is specified below).

Spark Plug Gap:

.030 in. (0.76 mm)-Kohler engine

.025 in. (0.64 mm)-Robin-Subaru engine

Spark Plug Torque:

20 ft. Lb. (27 N-m)-Kohler engine

11 ft. Lb. (14 N-m)-Robin-Subaru engine

CAUTION

The spark plug must be securely tightened. An improperly tightened spark plug can become very hot and may cause engine damage. Use only the recommended spark plug or equivalent. A spark plug which has an improper heat range may cause engine damage.

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RANGER® 250