Assessments - 2, GPA: 3.5
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fuel tank, air filter, fuel filter inspect/clean . . replace, if necessary idle adjusting screw see adjusting idling speed . replace carburetor if necessary spark plug clean and readjust plug gap . GAP: .025 in (0.6 ~ 0.7 mm) replace, if necessary cylinder fins, intake air cooling vent clean . muffler, spark arrester, cylinder exhaust port clean . SHAFT throttle lever, ignition switch check operation . cutting parts replace if something’s wrong . gear case grease . screws/nuts/bolts tighten/replace . . not adjusting screws debris guard make sure to attach . BLADE • Check the blade and the fasteners for looseness, cracking, or bending. • Check the cutting edges and reform with a flat file. (A) Saw blade (B) 8-teeth blade (C) 3-teeth blade Point : 1. Keep the end corner sharp. 2. Round the root of the edge, using round file. 3. Do not use water when using a grinder. IMPORTANT • It is recommended that filing should be done by professionals. • Especially regarding filing the saw blade, Leave it to the professionals. WARNING 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) 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 SPARK PLUG • Starting failure and misfiring 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 ZENOAH. • 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. 0.6~0.7 mm • REPLACEMENT PLUG IS A CHAMPION RZ7C. GB-14 BC2604DL / BC2604DW 9. Maintenance IMPORTANT • Check the intake air cooling vent and the area around the cylinder cooling fins after every 25 • Note that using any spark plug other than those des-hours of use for blockage, and remove any waste ignated may result in the engine failing to operate prop-which has attached itself to the brushcutter. Note erly or in the engine becoming overheated and dam-that it is necessary to remove the engine cover aged. shown in in order to be able to view the upper part • To install the spark plug, first turn the plug until it is of the cylinder. finger tight, then tighten it a quarter turn more with a socket wrench. IMPORTANT 87 ~ 104 in-lbs • If waste gets stuck and causes blockage around the TIGHTENING TORQUE: (9.8 ~ 11.8 N.m.) intake air cooling vent or between the cylinder fins, it may cause the engine to overheat, and that in turn MUFFLER may cause mechanical failure on the part of the brushcutter. G B WARNING • Inspect periodically, the muffler for loose fasteners, any damage or corrosion. If any sign of exhaust leakage is found, stop using the machine and have it repaired immediately. • Note that failing to do so may result in the engine catching on fire. GEAR CASE • The reduction gears are lubricated by multipurpose, lithium-based grease in the gear case. Supply new grease every 25 hours of use or more often depending on the job condition. • Remove the bolt opposit to the grease nipple before installing new grease to arrange for old grease to exit. INTAKE AIR COOLING VENT WARNING (1) Cylinder (2) Intake air cooling vent PROCEDURES TO BE PERFORMED AFTER EVERY 100 HOURS OF USE 1. Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon buildup. Wipe away any carbon buildup on the muffler exhaust vent and cylinder exhaust port at the same time. 2. Tighten all screws, bolts, and fittings. 3. Check to see if any oil or grease has worked its way in between the clutch lining and drum, and if it has, wipe it away using oil-free, lead-free gasoline. • Never touch the cylinder, muffler, or spark plugs with your bare hands immediately after stopping the engine. The engine can become very hot when in operation, and doing so could result in severe burns. • When checking the machine to make sure that it is okay before using it, check the area around the muffler and remove any wood chips or leaves which have attached themselves to the brushcutter. Failing to do so could cause the muffler to become overheated and that in turn could cause the engine to catch on fire. Always make sure that the muffler is clean and free of wood chips, leaves, and other waste before use. 10. Storage Aged fuel is one of major causes of engine starting failure. Before storing the unit, empty the fuel tank and run the engine until it uses all the fuel left in the fuel line and the carburetor. Store the unit indoor taking necessary measures for rust prevention. GB-15 BC2604DL / BC2604DW 11. Troubleshooting guide Case 1. Starting failure CHECK PROBABLE CAUSES ACTION fuel tank > incorrect fuel > drain it and use correct fuel fuel filter > fuel ...
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