Homelite UTi2100 Operation Manual - Page 20
Maintenance
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MAINTENANCE n Return the generator to an upright position and refill with lubricant following the instructions in the Checking/ Adding Lubricant section previously in this manual. For amount of lubricant needed to refill, see Product Specifications earlier in this manual or the accompanying engine manual, if applicable. n Replace and secure the oil cap/dipstick. Reinstall the side cover. Replace the screws and tighten securely. NOTE: Consult hazardous waste management guidelines in your area for the proper way to dispose of used lubricant. SPARK PLUG REPLACEMENT See Figure 16. The spark plug must be properly gapped and free of deposits in order to ensure proper engine operation. To check: n Remove the spark plug cover. n Remove the spark plug cap. n Clean any dirt from around base of spark plug. n Remove spark plug using spark plug wrench. n Inspect spark plug for damage, and clean with a wire brush before reinstalling. If insulator is cracked or chipped, spark plug should be replaced. For replacement spark plug, see Product Specifications earlier in this manual or the accompanying engine manual, if applicable. n Measure plug gap. The correct gap is 0.024−0.028 in. (0.60-0.70 mm). To widen gap, if necessary, carefully bend the ground (top) electrode. To lessen gap, gently tap ground electrode on a hard surface. n Seat spark plug in position; thread in by hand to prevent cross-threading. n Tighten with wrench to compress washer. If spark plug is new, use 1/2 turn to compress washer appropriate amount. If reusing old spark plug, use 1/8 to 1/4 turn for proper washer compression. NOTE: An improperly tightened spark plug will become very hot and could damage the engine. NOTICE: Be careful not to cross-thread the spark plug. Cross- threading will seriously damage the product. CLEANING THE EXHAUST PORT AND MUFFLER Depending on the type of fuel used, the type and amount of lubricant used, and/or your operating conditions, the exhaust port and muffler may become blocked with carbon deposits. If you notice a power loss with your gas-powered products, you may need to remove these deposits to restore performance. We highly recommend that only qualified service technicians perform this service. EXHAUST DIFFUSER See Figure 17. Inspect the exhaust diffuser for breaks or holes. Replace if necessary. n Loosen the screws on the rear cover. Remove rear cover and set aside. n Loosen the screw on the exhaust diffuser cap. Then, remove the exhaust diffuser cap and exhaust diffuser. n Use a brush to remove carbon deposits from the exhaust diffuser. n Replace the exhaust diffuser, exhaust diffuser cap, and rear panel. Ensure that all screws are tightened securely. DRAINING FUEL TANK/CARBURETOR See Figures 18 - 19. To help prevent gum deposits in the fuel system, drain the fuel from the tank and carburetor before storing. DRAINING THE FUEL TANK NOTICE: Remove all lubricant from the unit before draining the fuel tank. Failure to do so could cause damage to the unit. n Remove the fuel cap. n Tilt the generator and allow fuel to drain from the fuel tank into an approved container. n When the fuel has drained from the tank, replace the fuel cap. DRAINING THE CARBURETOR n Raise the generator and securely position props underneath for support. n Position a suitable container under the carburetor drain line to catch fuel. n Put the on/off switch in the OFF ( O ) position. n Remove the carburetor drain screw cover to access the drain screw. n Loosen the carburetor drain screw and allow fuel to drain completely into container. n Retighten drain screw securely. n Replace the carburetor drain screw cover. NOTE: Consult hazardous waste management guidelines in your area for the proper way to dispose of used fuel. TRANSPORTING n Put the on/off switch in the OFF ( O ) position. n Close the vent on the fuel cap by rotating the fuel cap lever to the OFF (O) position. n Make sure engine and exhaust of unit is cool. n If transporting in a vehicle, drain the fuel tank, and securely restrain the generator. Do not drop or strike unit or place under heavy objects. 16 - English