[. . . ] Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released. Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released. ⷠThis switch functions when setting the tool in symbol and symbol modes. Before plugging in the tool, always check to see that the tool is switched off. [. . . ] If the tool is operated continuously at low speeds for a long time, the motor will get overloaded, resulting in tool malfunction. ⷠThe speed adjusting dial can be turned only as far as 5 and back to 1. Do not force it past 5 or 1, or the speed adjusting function may no longer work. cAUTION: · When using the tool in the symbol mode, the switch trigger does not work and only the slide switch works. cAUTION: · Do not rotate the change lever when the tool is running under load. To avoid rapid wear on the mode change mechanism, be sure that the change lever is always positively located in one of the two or three action mode positions. The revolutions and blows per minute can be adjusted just by turning the adjusting dial. Refer to the table below for the relationship between the number settings on the adjusting dial and the revolutions/ blows per minute. The torque limiter will actuate when a certain torque level is reached. As soon as the torque limiter actuates, switch off the tool immediately. If the indicator lamp does not light up, the mains cord or the controller may be defective. To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized Service Centers, always using Makita replacement parts. Then make sure that the bit is securely held in place by turning it slightly. These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. If you need any assistance for more details regarding these accessories, ask your local Makita Service Center. Some items in the list may be included in the tool package as standard accessories. For Model HR4501C For European countries only Noise ENG102-2 The typical A-weighted noise level determined according to EN60745: Sound pressure level (LpA): 94 dB (A) Sound power level (LWA): 105 dB (A) Uncertainty (K): 3 dB (A) Wear ear protection. Vibration ENG216-2 The vibration total value (tri-axial vector sum) determined according to EN60745: Work mode: chiseling function with side handle Vibration emission (ah, CHeq): 12. Vibration ENG216-2 The vibration total value (tri-axial vector sum) determined according to EN60745: Work mode: chiseling function with side handle Vibration emission (ah, CHeq): 8. Work mode: chiseling function with side grip Vibration emission (ah, CHeq): 8. Work mode: hammer drilling into concrete Vibration emission (ah, HD): 9. [. . . ] 5 m/s2 Uncertainty (K): 2 m/s2 For Model HR4511C For European countries only Noise ENG102-2 The typical A-weighted noise level determined according to EN60745: Sound pressure level (LpA): 94 dB (A) Sound power level (LWA): 105 dB (A) Uncertainty (K): 3 dB (A) Wear ear protection. Vibration ENG216-2 The vibration total value (tri-axial vector sum) determined according to EN60745: Work mode: chiseling function with side handle Vibration emission (ah, CHeq): 7 m/s2 Uncertainty (K): 1. Work mode: chiseling function with side grip Vibration emission (ah, CHeq): 7. Work mode: hammer drilling into concrete Vibration emission (ah, HD): 7. [. . . ]