Makita UC3030A Owner's And Safety Manual

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Makita UC3030A Owner's And Safety Manual Manual pdf 10 page image

10SERVICEKIJChecking the chain tensionThe chain has the proper tension when it lies against the bottomedge of the guide bar and can be easily pulled by hand about2-4 mm (about 1/8”) up from the guide bar.Check the chain tension frequently - new chains tend to getlonger during use!When checking the chain tension the motor must be switchedoff and the power supply plug pulled out. If the chain is tooloose: Loosen the sprocket guard quick tightener by about aquarter turn. Tighten the chain as described under “Tighteneingthe saw chain.”HINT:Use 2 or 3 saw chains alternately for even wear of the chains,sprocket and guide bar running surfaces.In order to guarantee a uniform wear of the groove in the bar thebar should be turned over whenever replacing the chain.231Chain brakeThese models come with a chain brake as standard equip-ment. If there is a kickback resulting from the guide bar tipimpacting the wood (see SAFETY INSTRUCTIONS, page 5),the back of the hand hitting the handguard will engage thechain brake.The chain will stop within a fraction of a second.Run-out brakeThe electric chain saw come with a run-out brake as standardequipment.The run-out brake ensures that the chain comes to a stopimmediately when the ON/OFF switch is released, thuspreventing the chain from continuing to run and presenting ahazard.Testing of the run-out brake is described on page 14.Chain and run-out brake maintenanceThe brake systems are very important safety features, andlike any other part they are subject to a certain amount ofwear. Regular inspection and maintenance is important foryour personal safety, and can be properly performed onlyby a MAKITA service center.Engaging the chain brake (braking)With your left hand, press the handguard (1) towards the tip ofthe guide bar (arrow 2).Releasing the chain brakePull the hand guard (1) towards you (arrow 3) until you feel itcatch. The brake is now released.Note:When the chain brake is actuated the power supply to themotor will be cut off. Testing of the chain brake is describedon page 14.