Makita 3620 Instruction Manual

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CAUTION:Since excessive cutting may cause overload of the motoror difficulty in controlling the tool, the depth of cut shouldnot be more than 15 mm at a pass when cutting grooveswith an 8 mm diameter bit.[Note: When cutting grooves with a 20 mm diameter bit,the depth of cut should not be more than 5 mm at a pass.]When you wish to cut grooves more than 15 mm deepwith an 8 mm diameter bit or more than 5 mm deep witha 20 mm diameter bit, make several passes with progres-sively deeper bit settings.Stopper block (Fig. 5)The stopper block has three adjusting hex bolts whichraise or lower 0.8 mm per turn. You can easily obtainthree different depths of cut using these adjusting hexbolts without readjusting the stopper pole.Adjust the lowest hex bolt to obtain the deepest depth ofcut, following the method of ‘‘Adjusting depth of cut’’.Adjust the two remaining hex bolts to obtain shallowerdepths of cut. The differences in height of these hex boltsare equal to the differences in depths of cut. To adjust thehex bolts, first loosen the hex nuts on the hex bolts withthe wrench and then turn the hex bolts. After obtaining thedesired position, tighten the hex nuts while holding thehex bolts in that desired position. The stopper block isalso convenient for making three passes with progres-sively deeper bit settings when cutting deep grooves.CAUTION:When using a bit having total length of 60 mm or more, oredge length of 35 mm or more, the depth of cut cannot beadjusted as previously mentioned. To adjust, proceed asfollows:Loosen the lock lever and carefully adjust bit protrusionbelow the tool base to the desired depth of cut by movingthe tool body up or down. Then re-tighten the lock lever tolock the tool body at that depth of cut. Keep the tool bodylocked at this position during use. Since the bit alwaysprotrudes from the tool base, be careful when handlingthe tool.Adjusting the lock lever (Fig. 6)The locked position of the lock lever is adjustable. Toadjust it, loosen the lock lever 3/4 turn and press thecenter of the lock lever. The hex nut will come out. Set thehex nut to the desired position and tighten the lock lever.Switch action (Fig. 7)CAUTION:Before plugging in the tool, always check to see that theswitch trigger actuates properly and returns to the ‘‘OFF’’position when released.To start the tool, simply pull the trigger. Release thetrigger to stop.Operation (Fig. 8)• Set the tool base on the workpiece to be cut without thebit making any contact. Then turn the tool on and waituntil the bit attains full speed. Lower the tool body andmove the tool forward over the workpiece surface,keeping the tool base flush and advancing smoothlyuntil the cutting is complete.• When doing edge cutting, the workpiece surface shouldbe on the left side of the bit in the feed direction.NOTE:• Moving the tool forward too fast may cause a poorquality of cut, or damage to the bit or motor. Moving thetool forward too slowly may burn and mar the cut. Theproper feed rate will depend on the bit size, the kind ofworkpiece and depth of cut. Before beginning the cut onthe actual workpiece, it is advisable to make a samplecut on a piece of scrap lumber. This will show exactlyhow the cut will look as well as enable you to checkdimensions.• When using the straight guide, be sure to install it on theright side in the feed direction. This will help to keep itflush with the side of the workpiece.Straight guide (Fig. 9, 10 & 11)The straight guide is effectively used for straight cutswhen chamfering or grooving.To install the straight guide, insert the guide bars into theholes in the tool base. Adjust the distance between the bitand the straight guide. At the desired distance, tighten thewing bolts to secure the straight guide in place.When cutting, move the tool with the straight guide flushwith the side of the workpiece.If the distance (A) between the side of the workpiece andthe cutting position is too wide for the straight guide, or ifthe side of the workpiece is not straight, the straight guidecannot be used. In this case, firmly clamp a straight boardto the workpiece and use it as a guide against the routerbase. Feed the tool in the direction of the arrow.Templet guide (optional accessory)(Fig. 12, 13 & 14)The templet guide provides a sleeve through which the bitpasses, allowing use of the router with templet patterns.To install the templet guide, loosen the screws on the toolbase, insert the templet guide and then tighten thescrews.Secure the templet to the workpiece. Place the tool on thetemplet and move the tool with the templet guide slidingalong the side of the templet.Vacuum head set (optional accessory)(Fig. 15, 16 & 17)When you wish to perform clean cutting operation, usethis vacuum head. Install the vacuum head on the routerbase using the two screws and connect a vacuum cleanerto the vacuum head.MAINTENANCECAUTION:Always be sure that the tool is switched off and unpluggedbefore carrying out any work on the tool.To maintain product safety and reliability, repairs, main-tenance or adjustment should be carried out by a MakitaAuthorized Service Center.ACCESSORYMakita offers an extensive range of router bits whichcomply with the latest safety regulations. Specifications ofeach type can be found on the following pages.7

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