Lincoln Electric 250 manual AIR Filter Paper Element, Spark Plug Service

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MAINTENANCE

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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 cleaner base. Make sure it is secured and not bent or dam- aged. Also check the element cover for damaged or improper fit. Replace all damaged air cleaner com- ponents.

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)-Onan Engine’s

Spark Plug Torque: 20 ft. Lb. (27 N-m)-Kohler Engine 11 ft. Lb. (14 N-m)-Onan Engine’s

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 equiva- lent. A spark plug which has an improper heat range may cause engine damage.

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RANGER 250

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Contents Ranger Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcThank You Table of Contents Table of Contents Installation Machine Specifications Ranger 250 K1725-2, K1725-4 Safety Precautions PRE-OPERATION Engine Service Electrical Connections Auxiliary Power Receptacles Standby Power ConnectionsConnection of Ranger 250 to Premises Wiring Connection of LN-7 or LN-8 to the Ranger Connection of Lincoln ELEC- Tric Wire FeedersConnection of an LN-23P Wire Feeder to the Ranger Connection of the LN-25 to the RangerGeneral Description Design FeaturesOperation Engine OperationARC Control Weld Mode Selector SwitchWelding Controls Weld Output Terminals with Flange NUTEngine Controls Weld Terminals Control SwitchWire Feeder Voltmeter Switch PIN AmphenolTypical Ranger 250 Fuel Consumption Welder OperationStopping Typical Current Ranges 1 for Tungsten ELECTRODES2 Wire WELDING-CVTIG Welding Ranger 250 Extension Cord Length Recommendations Auxiliary PowerARC Gouging Recommended Optional Equipment Accessories T12153-9 50 AMP, 120/240V Power Plug Kohler Engine MaintenanceEngine Maintenance Components Onan P220 OHVEngine OIL Change AIR Cleaner ServiceAIR PRE-CLEANER Service Engine OIL Refill CapacitiesSpark Plug Spark Plug ServiceAIR Filter Paper Element Cleaning the Battery Engine Adjustment Overspeed is HazardousBattery Maintenance Charging the BatteryWelder / Generator Maintenance Troubleshooting HOW to USE Troubleshooting GuideLincoln Authorized Field Service FacilityPersists,Contact your local Possible Areas Contact your local LincolnTroubleshooting Troubleshooting Diagrams Diagrams Diagrams Diagrams Diagrams Engine Welders /LN-8 Connection Diagram Diagrams Diagrams Diagrams Diagrams Diagrams Diagrams G4284 W1115.25 15.50 Dimension Print Ranger22.25 23.50 Ranger Ranger Precaucion Warnung
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