22Trouble shootingMalfunction System Observation CauseChain saw does not work total electric motor does notfunctionno power supply,cable defectivechain brake actuatedMains fuse blowninsufficient performance Carbon brushes low pulling power Carbon brushes worndownno chain lubrication Oil tank, oil pump no oil on the saw chain oil tank empty,oil guide groove dirtyChain brake Brake Saw chain does not stopinstantlyBrake band worn downRun-out brake Brake Saw chain continues to run Carbon brushes worndownInstructions for periodic maintenanceTo ensure long life, prevent damage and ensure the full functioning of the safety features the following maintenancemust be performed regularly. Guarantee claims can be recognized only if this work is performed regularly and properly.Failure to perform the prescribed maintenance work can lead to accidents!The user of the electric chain saw is not allowed to perform maintenance works which are not described in theinstruction manual. All other works must be carried out by a MAKITA service centre.General work Electric chain saw Regularly clean the outside.Plastic case Check for cracks and ruptures. In case of damage have itimmediately repaired at a service centre.Saw chain Resharpen regularly.Replace in time.Guide bar Turn over after a certain period of time so that the bearingsurfaces are uniformly worn.Replace in time.Sprocket Have it replaced in time at a service centre.Chain brake Have it inspected regularly at a service centre.Run-out brake Have it inspected regularly at a service centre.Each time before puttingthe saw into operationSaw chain Check for damage and sharpness.Check the chain tension.Guide bar Check for damage, and remove burrs if necessary.Chain lubrication Functional check.Chain brake Functional check.Run-out brake Functional check.Power switch Functional check.Power supply cable In case of damage have it replaced at a service centre.Oil tank cap Check for tightness.After each shutdown Guide bar Clean the oil inlet bore.Chain carrier Clean, especially the oil guide groove.Storage Chain oil tank Empty.Saw chain/guide bar Demount, clean and lubricate slightly.Clean the guide groove of the guide bar.Electric chain saw Store safely in a dry place. After a long storage time, havethe electric chain saw checked at a service centre (residualoil can become resinic and the valve of the oil pumpclogged).