Makita UC3551A UC3551A UC4051A Instruction Manual - Page 11

Adjusting saw chain tension The saw chain may become loose after many hours of use. From time to time check the saw chain tension before use. 1. Loosen the sprocket cover lightly. 2. Lift up the guide bar tip slightly. 3. Turn the adjusting screw / dial to adjust saw chain tension. 1 35 2 1. Loosen 2. Tighten 3. Chain adjusting screw 4. Guide bar 5. Saw chain OPERATION CAUTION: • Hold the tool firmly with right hand on the rear handle and left hand on the front handle when performing the tool. Switch action 1. Lock-off button 1 2. Switch trigger 2 4 014680 4. Tighten the saw chain until the lower side of the saw chain fits in the guide bar rail (see circle). 5. Keep holding the guide bar lightly, tighten the sprocket cover after adjusting the chain tension. Make sure that the saw chain does not loose at lower side. Make sure the saw chain fits snugly against the lower side of the bar. CAUTION: • Do not tighten the saw chain too much. Excessively high tension of saw chain may cause breakage of saw chain, wear of the guide bar and breakage of the adjusting dial. • A chain which is too loose can jump off the bar, and therefore presents an accident risk. • Carry out the procedure of installing or removing saw chain in a clean place free from sawdust and the like. Engaging extension cord CAUTION: • Make sure that the extension cord is unplugged to the mains outlet. 1 3 1. Cord hook 2. Tool's cord 3. Extension cord 4. Plug and socket (the shape may 2 differ from country to country) 014376 CAUTION: • Always be sure that the tool is switched off and unplugged before checking function on the switch trigger. • Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released. To prevent the switch trigger from being accidentally pulled, a lock-off button is provided. To start the tool, depress the lock-off button and pull the switch trigger. Release the switch trigger to stop. Electric brake This tool is equipped with an electric brake. If the tool consistently fails to quickly stop after the switch trigger is released, have the tool serviced at a Makita service center. Lubrication CAUTION: • Always be sure that the tool is switched off and unplugged before lubricating the saw chain. Reclaimend oil 4 014359 When engaging the extension cord, secure it to the chain saw's cord with the cord hook. Attach the cord hook about 100 - 200 mm (4 - 8") from the extension cord connector. This helps prevent unintentional disconnection. 006921 Lubricate the saw chain and bar using biologically degradable saw chain oil with an adhesion agent. The adhesion agent in the saw chain oil prevents the oil from being thrown off the saw excessively quickly. Mineral oils must not be used, as they are harmful to the environment. 11