Makita RBC421L Original Instruction

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Makita RBC421L Original Instruction Manual pdf 16 page image

16RESHARPENING THE CUTTING TOOLCAUTION: The cutting tools mentioned below must only be resharpened by anauthorized facility. Manual resharpening will result in imbalancesof the cutting tool causing vibrations and damage to the equipment.– cutter blade (star blade (4 teeth), eddy blade (8 teeth), brush blade(3 teeth))An expert resharpening and balancing service is provided by AuthorizedService Agents.NOTE: To increase the service life of the cutter blade (star blade, eddy blade)it may be turned over once, until both cutting edges have become blunt.NYLON CUTTING HEADThe nylon cutting head is a dual string trimmer head capable of both automatic and bump & feed mechanisms.The nylon cutting head will automatically feed out the proper length of nylon cord by the changes in centrifugal force caused by increasing ordecreasing RPMS. However, to cut soft grass more efficiently, bump the nylon cutting head against the ground to feed out extra cord asindicated under operation section.Operation– Increase the nylon cutting head speed to approx. 6,000 min-1.Low speed (under 4,800 min-1) is not suitable, the nylon cord will not feed outproperly at low speed.– The most effective cutting area is shown by the shaded area.If the nylon cord does not feed out automatically, proceed as follows:1. Release the control lever to run the engine idle and then squeeze the controllever fully. Repeat this procedure until the nylon cord feeds out to theproper length.2. If the nylon cord is too short to feed out automatically with the aboveprocedure, bump the knob of the nylon cutting head against the ground tofeed out the nylon cord.3. If the nylon cord does not feed out with procedure 2, rewind/replace thenylon cord by following the procedures described under “Replacing the nyloncord”.Most effective cutting areaIdle speed Full speedKnob