Makita UC3030A Instruction Manual

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Contents

Makita UC3030A Instruction Manual Manual pdf 20 page image

20AMAINTENANCESharpening the saw chainWhen working on the saw chain you must always pull outthe power supply plug and wear protective gloves.The chain needs sharpening when:- the sawdust from sawing humid wood looks like woodflour.- the saw chain penetrates the wood only under great pres-sure.- the cutting edge is visibly damaged.- the sawing device is pulled to the left or the right during thesawing operation. This is caused by uneven sharpening ofthe chain or by damage to one side of it.Important: Sharpen frequently, but without removingtoo much metal!Generally, 23 strokes of the file will be enough.Have the chain resharpened in a service center when youhave sharpened it yourself several times.Proper sharpening:CAUTION:Use only chains and guide bars designed for this saw!- All cutters must be of the same length (dimension a). Cutterswith different lengths result in rough running of the chain andcan cause cracks in the chain.Minimum cutter length is 3 mm (0.11”). Do not resharpen thechain when the minimum cutter length has been reached;at this point, the chain must be replaced.The depth of the cut is determined by the difference in heightbetween the depth limiter (round nose) and the cuttingedge.- The best results are obtained with a depth-limiter depth of0.64 mm (.025”).CAUTION:Excessive depth increases therisk of kickback!- All cutters must be sharpened to the same angle, 30°. Dif-ferent angles result in a roughly, irregularly running chain,increase wear and tear and cause chain beakage.- The 85° front rake of the cutter results from the cut depth ofthe round file. If the proper file is used in the right manner,the correct front rake will be obtained automatically.0.64 mm(.025”)0.64 mm(.025”)min.3 mm (0.11”)