Makita RBC421L Instruction Manual

Also see for RBC421L: Original instruction

Contents

Makita RBC421L Instruction Manual Manual pdf 17 page image

17SERVICING INSTRUCTIONSCAUTION: Before doing any work on the brush cutter, always switch off themotor and pull the plug cap off the spark plug (see “checking thespark plug”).Always wear protective gloves.To ensure a long service life and to avoid any damage to the equipment, thefollowing servicing operations should be performed at regular intervals.Daily checkup and maintenance– Before operation, check the machine for loose screws or missing parts. Payparticular attention to the tightness of the cutter blade or nylon cutting head.– Before operation, always check for clogging of the cooling air passage andthe cylinder fins.Clean them if necessary.– Perform the following work daily after use:• Clean the brush cutter externally and inspect for damage.• Clean the air filter. When working under extremely dusty conditions, cleanthe filter the several time a day.• Check the blade or the nylon cutting head for damage and make sure it isfirmly mounted.• Check that there is sufficient difference between idling and engagementspeed to ensure that the cutting tool is at a standstill while the engine isidling (if necessary, reduce idling speed).• If under idling conditions the tool should still continue to run, consult yournearest Authorized Service Agent.– Check the functioning of the I-O switch, the lock-off lever, the control lever,and the look button.Cleaning of air cleaner– Raise the lock lever (1) of the air cleaner cover and release the lock.– Hold the right and left sides of the air cleaner cover, press it to the inside andthen remove it.– Push the choke lever (2) up (arrow), to prevent dirt particles from entering thecarburetor.– Remove the sponge element (3).Wash it with lukewarm water and then dry it thoroughly.– After cleaning, put back the sponge element and install the air cleaner cover(4) and tighten the screw to secure.NOTE: If there is excessive dust or dirt adhering to the air cleaner, clean itevery day. A clogged air cleaner may make it difficult or impossible tostart or run the engine at proper rotational speeds.(3)(2)(4)(1)