Husqvarna 226HS75S Owners Manual - Page 13

English Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual. ■ MAINTENANCE CHART System/components Procedure Every Every Every Before 25 50 100 use hours hours hours after after after Note fuel leaks, fuel spillage fuel tank, air filter, fuel filter idle adjusting screw wipe out inspect/clean see adjusting idling speed replace, if necessary replace carburetor if necessary ENGINE spark plug clean and readjust plug gap GAP : 0.6 ~ 0.7 mm replace, if necessary cylinder fins, intake air cooling vent clean muffler, spark arrester, cylinder exhaust port clean throttle lever, ignition switch check operation TRIMMER cutting parts replace if something's wrong gear case screws/nuts/bolts debris guard grease tighten/replace make sure to attach not adjusting screws WARNING Make sure that the engine has stopped and is cool before performing any service to the machine. Contact with moving cutting head or hot muffler may result in a personal injury. AIR FILTER • The air filter, if clogged, will reduce the engine performance. Check and clean the filter element in warm, soapy water as required. Dry completely before installing. If the element is broken or shrunk, replace with a new one. (1) SPARK PLUG • Starting failure and mis-firing are often caused by a fouled spark plug. Clean the spark plug and check that the plug gap is in the correct range. For a replacement plug, use the correct type specified by Husqvarna. (1) Air filter FUEL FILTER • When the engine runs short of fuel supply, check the fuel cap and the fuel filter for blockage. (1) Fuel filter .025 in 0.655mm • REPLACEMENT PLUG IS NGK CMR7H OR CHAMPION RZ7C. IMPORTANT • Note that using any spark plug other than those designated may result in the engine failing to operate properly or in the engine becoming overheated and damaged. • To install the spark plug, first turn the plug until it is finger tight, then tighten it a quarter turn more with a socket wrench. TIGHTENING TORQUE: 87~121 in-lbs (9.8~13.7 N.m.) (1) 14