16EnglishINTAKE AIR COOLING VENT• Never touch the cylinder, muffler, or spark plugs withyour bare hands immediately after stopping the engine.The engine can become very hot when in operation, anddoing so could result in severe burns.• Clean the cylinder fins with compressed air or a brush.If waste gets stuck and causes blockage around theintake air cooling vent or between the cylinder fins,it may cause the engine to overheat, and that in turnmay cause mechanical failure on the part of the hedge-trimmer.BLADESClean any resin and plant reside from the blades usingcleaning agent 531 00 75-13 (UL22) before and after usingthe machine.• Make sure that the blade bolts are well tightened.• The blade assembly is designed to automaticallycompensate for any play between the blades.Check the cutting edges and reform with a flat file.Point :1. Keep the end corner sharp.2. Round the root of the edge.3. Do not use water when using a grinder.SHARPENINGAlways keep the file or sharpener at an angle of 45° to theblade, and:• Always grind in the direction of the cutting edge;• Note: files cut only in one direction; lift the file from theblade when returning to start a new pass;• Remove all burr from the edge of the blade with a slipstone;• Remove as little material as possible;• Before refitting the sharpened blades, remove filingsand then apply grease.Do not try to sharpen a damaged blade: change it or take itto a Service dealer.MaintenanceIMPORTANTWARNINGWARNING