MAINTENENANCESection 3 -- MaintenanceCarrier Air-cooled 7 kW, 12 kW and 15 kW GeneratorsFigure 3.4 - Oil Drain Hose and FilterLow OHSwitch HighT_ _Switch¢OHFHter3.4 CHANGING THE OIL FILTERChange the engine oil filter as follows:1. With the oil drained, remove the old oil filter byturning it counterclockwise.2. Apply a light coating of clean engine oil to the gasketof the new filter. See Section 1.5.2 for recommendedfilter.3. Screw the new filter on by hand until its gasket lightlycontacts the oil filter adapter. Then, tighten the filteran additional 3/4 to one turn (Figure 3.4).4. Refill with the proper recommended oil (see Section3.3.1 ). See Section 1.5.2 for oil capacities.5. Start the engine and check for leaks.3,5 CHANGING THE ENGINEAIR CLEANER3.5.1 7 KW, 12 KWAND 15 KWGENERATORSSee Figures 1.1 and 1.2, for the location of the aircleaner. Use the following procedure (Figures 3.5 & 3.6):1. Turn the two screws counterclockwise to loosen.2. Remove the cover and air filter.3. Wipe away dust or debris from inside of the air boxand around edges.4. Install the new air cleaner into the air box.5. Install the cover. Turn the two cover screwsclockwise to tighten.See the "Service Schedule," Section 4.1, for air cleanermaintenance. See Section 1.5.1 for air filter replacementpart number.14 CarrierFigure 3.5 -- 7 kW, Engine Air Cleaner LocationScre_FuelReguJator/Figure 3.6 -- 12 kW and 15 kW EngineAir CleanerScrewCoverFHter3.6 SPARK PLUG(S)Reset the spark plug(s) gap or replace the spark plug(s)as necessary. See Section 4.1 for maintenancerequirements.1. Clean the area around the base of the spark plug(s)to keep dirt and debris out of the engine. Clean byscraping or washing using a wire brush andcommercial solvent. Do not blast the spark plug(s) toclean.2. Remove the spark plug(s) and check the condition.Replace the spark plug(s) if worn or if reuse isquestionable. See Section 4.1 for recommendedinspection.3. Check the spark plug gap using a wire feeler gauge.Adjust the gap to 0.76 mm (0.030 inch) for 7 kW and0.50 mm (0.020 inch) for 12 kW and 15 kW bycarefully bending the ground electrode (Figure 3.7).