307-14. Instructions for periodic maintenanceTo ensure long life, prevent damage and ensure the full functioning of the safety features the following maintenance must be per‑formed regularly. Guarantee claims can be recognized only if this work is performed regularly and properly. Failure to perform theprescribed maintenance work can lead to accidents!The user of the chain saw must not perform maintenance work which is not described in the instruction manual. All such workmust be carried out by a MAKITA service center.SectionGeneral Chain saw Clean exterior, check for damage. In case of damage,have repaired by a qualified service center immediatelySaw chain Sharpen regularly, replace in good time 7‑1Chain brake Have inspected regularly at an authorized service centerGuide bar Turn over to ensure even wear of bearing surfacesReplace in good time6a ‑ c7‑3Starter cable Check for damage. Replace if damaged. 7‑9Before each start Saw chain Inspect for damage and sharpness 7‑1Check chain tension 6a‑3, 6b‑3,6c‑3Guide bar Check for damageChain lubrication Functional check 6‑9Chain brake Functional check 6‑13Combination switch,Safety locking button,Throttle leverFunctional check 6‑11Fuel/oil tank cap Check for tightnessEvery day Air filter Clean (several times daily if necessary) 7‑5Guide bar Check for damage, clean oil intake bore 7‑3Guide bar support Clean, in particular the oil guide groove 6‑10, 7‑2Idle speed Check (chain must not run) 6‑14Every week Fan housing Clean to maintain good cooling air flow. 5Air filter compartment Clean to maintain good cooling air flow. 7‑11Fan compartment Clean to maintain good cooling air flow. 7‑11Cylinder fins Clean to maintain good cooling air flow. 7‑12Spark plug Check and replace if necessary 7‑6, 7‑7Muffler Check tightness of mounting, Check screws 5, 7‑8Chain catcher Check 5Screws and nuts Check their condition and that they are firmly secured.Every 3 months Suction head Replace 7‑13Fuel, oil tanks CleanAnnually Chain saw Check at an authorized service centerStorage Chain saw Clean exterior, check for damage. In case of damage,have repaired by a qualified service center immediatelyGuide bar/chain Demount, clean and oil slightlyClean the guide groove of the guide bar 7‑3Fuel, oil tanks Empty and cleanCarburetor Run empty