Makita 7104L Instruction Manual

Also see for 7104L: Brochure Parts manual Instuction manual Instruction manual Instruction manual

Contents

72. Longitudinal (length) enlargementHole length can be determined in three steps shown in thetable below.NOTE:• A hole a little longer than predetermined may be cutdepending upon the cutter chain tension.• The adjusting hex bolts are factory adjusted for cuttingholes 90 mm long in the No. 1 set position and 120 mmlong in the No. 2 set position.Push down the right-hand grip while raising the left-handgrip. Make sure that the adjusting hex bolt slips into placesecurely. (Fig. 11)Loosen the hex nut securing the adjusting hex bolt. Turnthe adjusting hex bolt until the cutter chain reaches thedesired position, then tighten the hex nut.WARNING:• When using pressure to turn the adjusting hex bolt orhex nut, be careful not to allow the adjusting hex bolt toslip off the set position.To bring the cutter chain back to the perpendicular (origi-nal) position, pull the lever (C) toward you while pressingdown on the right-hand grip and slightly raising the left-hand grip and move the cutter chain back to its originalposition. (Fig. 12)When cutting a hole, first use the perpendicular position,then No.1 set position and finally No.2 set position.Always safely hook the tool head back onto the hookwhen changing the cutter chain position. (Fig. 13)When enlarging a hole both transversely and longitudi-nally, cut the holes in the order indicated from No. (1) to(6) as shown. This makes for more easy and efficient holeenlargement. (Fig. 14)WARNING:• Never attempt to enlarge a hole with the cutter chainstill within the hole. This will cause unstable and dan-gerous operation.• Never angle the cutter chain when cutting the first hole,or a dangerous kickback may result. Always have thecutter chain set to the perpendicular position when cut-ting the first hole.Lap joints up to 130 mm can be cut with this tool. (Fig. 15)NOTE:• Lap joints can be cut only on the front (side away fromyou) of the workpiece.MAINTENANCECAUTION:• Always be sure that the tool is switched off andunplugged before attempting to perform inspection ormaintenance.Replacing carbon brushesRemove and check the carbon brushes regularly. Replacewhen they wear down to the limit mark. Keep the carbonbrushes clean and free to slip in the holders. Both carbonbrushes should be replaced at the same time. Use onlyidentical carbon brushes. (Fig. 16)Use a screwdriver to remove the brush holder caps. Takeout the worn carbon brushes, insert the new ones andsecure the brush holder caps. (Fig. 17)LubricationAfter use, remove dirt, chips and foreign matter adheringto the tool. Then oil the moving parts (especially cutterchain) and the contact portions.To maintain product SAFETY and RELIABILITY, repairs,any other maintenance or adjustment should be per-formed by Makita Authorized Service Centers, alwaysusing Makita replacement parts.ACCESSORIESCAUTION:• These accessories or attachments are recommendedfor use with your Makita tool specified in this manual.The use of any other accessories or attachments mightpresent a risk of injury to persons. Only use accessoryor attachment for its stated purpose.If you need any assistance for more details regardingthese accessories, ask your local Makita service center.• Cutter chain• Chain bar for 30 mm• Sprocket 4 for 30 mm• Oil supply (100 cc)Cutter chain position Hole length to be cutOriginal position 52.5 mmNo.1 set position 52.5 mm – 105 mmNo.2 set position 77.5 mm – 130 mm