Makita DUC121 Instruction Manual

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Contents

20Take the filter out of the chain saw and remove small dustor particles from it. When the filter is too dirty, replace itwith a new one. (Fig. 25)Insert the battery cartridge into the tool.Pull the switch trigger to flow built-up dust or particles offthe oil discharge hole by discharging chain oil. (Fig. 26)Remove the battery cartridge from the tool.Insert the cleaned oil filter into the oil discharge hole.When the filter is too dirty, replace it with a new one.(Fig. 27)Insert the push nut with its correct side facing up asshown in the figure into the oil discharge hole to securethe filter. When the filter cannot be secured with a disfig-ured push nut, replace the push nut with a new one.(Fig. 28)Reinstall the sprocket cover and saw chain on the tool.Replacing the sprocket (Fig. 29 & 30)Before fitting a new saw chain, check the condition of thesprocket.CAUTION:• A worn sprocket will damage a new saw chain. Havethe sprocket replaced in this case. The sprocket needto be installed so that it always faces as shown in thefigure.Always fit a new locking ring when replacing thesprocket.Replacing carbon brushes (Fig. 31 & 32)Remove and check the carbon brushes regularly.Replace when they wear down to the limit mark. Keepthe carbon brushes clean and free to slip in the holders.Both carbon brushes should be replaced at the sametime. Use only identical carbon brushes.Use a screwdriver to remove the brush holder caps. Takeout the worn carbon brushes, insert the new ones andsecure the brush holder caps.Storing toolClean the tool before storing. Remove any chips andsawdust from the tool after removing the sprocket cover.After cleaning the tool, run it under no load to lubricatethe saw chain and guide bar.Cover the guide bar with the scabbard.Remove oil from the oil tank to empty it and place thechain saw with the tank cap facing upward.To maintain product SAFETY and RELIABILITY, repairs,any other maintenance or adjustment should be per-formed by Makita Authorized Service Centres, alwaysusing Makita replacement parts.