2Thank you for purchasing a MAKITA prod-uct!Congratulations on choosing a MAKITA chain saw! We areconfident that you will be satisfied with this modern piece ofequipment.The DCS6400 - 7901H are very handy and robust chain sawswith a new Design.The automatic chain lubrication with variable-flow oil pumpand maintenance-free electronic ignition ensure trouble-freeoperation, while the hand-saving anti-vibration system andergonomic grips and controls make work easier, safer, andless tiring for the user.MAKITA chain saws DCS6400 - 7901H are equipped with thelatest safety features and meet all national and internationalstandards. These features include: hand guards on both handles,grip throttle lever lock, chain catch, safety saw chain, and chainbrake. The chain brake can be actuated manually, and is alsoinertia-actuated automatically in case of kickback.The following industrial property rights apply: GBM 29616652,EP 0560201B1.In order to ensure the proper functioning and performanceof your new chain saw, and to safeguard your own per-sonal safety, it is imperative that you read this instructionmanual thoroughly before operation. Be especially carefulto observe all safety precautions! Failure to observe theseprecautions can lead to severe injury or death!PackingYour MAKITA chain saw comes delivered in a protective card-board box to protect against shipping damage.Cardboard is a basic raw material and is consequently reuseableor suitable for recycling (waste paper recycling).Table of contents PagePacking ................................................................................ 2Delivery inventory .............................................................. 3Symbols ............................................................................... 3SAFETY PRECAUTIONSGeneral precautions ....................................................... 4Protective equipment ...................................................... 4Fuels / Refuelling ............................................................ 5Putting into operation ...................................................... 5Kickback ......................................................................... 6Working behavior/Method of working ...........................6-7Transport and storage ..................................................... 8Maintenance ................................................................... 8First aid ........................................................................... 8Technical data ..................................................................... 9Denomination of components ........................................... 9PUTTING INTO OPERATIONMounting the guide bar and saw chain .................... 10-11Tightening the saw chain ......................................... 11-12Chain brake .................................................................. 12Fuels ........................................................................13-14Refuelling ...................................................................... 14Checking the chain lubrication ...................................... 15Adjusting the chain lubrication ...................................... 15Starting the engine ........................................................ 16Cold start ....................................................................... 16Warm start .................................................................... 16Stopping the engine ...................................................... 16Checking the chain brake ............................................. 16Adjusting the carburetor (only for EU-countries) ............ 17Adjusting the carburetor (only for not EU-countries) ...... 18Working in summer / winter ............................................ 19Handle heating (only ÑHì-models)........................................ 19MAINTENANCESharpening the saw chain .......................................20-21Cleaning the brake band and sprocket interior ............. 22Cleaning the guide bar ................................................. 23Replacing the saw chain ............................................... 23Replacing the suction head ......................................... 23Cleaning the air filter and the filter hood ...................... 24Replacing the spark plug .............................................. 25Checking the ignition spark ........................................... 25Checking the muffler screws ......................................... 25Replacing the starter cable / Replacing the return spring 26Mounting the fan housing ............................................. 27Cleaning the cylinder area ............................................ 27Replacing/cleaning the spark arrester screen .............. 27Instructions for periodic maintenance ........................... 28Service, spare parts and guarantee ...........................28-29Trouble shooting .............................................................. 29Extract from spare parts list ........................................... 30Accessories .................................................................. 30EU conformity declaration ............................................... 31