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- UC3050A
- Instruction Manual
Makita UC3050A Instruction Manual
Summary of UC3050A
Page 1
1 english ( o rigina l in st ruct ions) instruction manual double insulation important: read before using. Electric chain saw uc3050a uc3550a uc4050a uc4550a uc3051a uc3551a uc4051a uc4551a 014371.
Page 2: Specifications
2 english (original instructions) specifications model uc3050a uc3051a uc3550a uc3551a uc4050a uc4051a uc4550a uc4551a max. Chain speed 14.5 m/s (880 m/min) bar length 300 mm 350 mm 400 mm 450 mm cutting length 260 mm 320 mm 355 mm 415 mm standard guide bar guide bar type sprocket nose bar type 91px...
Page 3: General Power Tool Safety
3 gea005-3 general power tool safety warnings warning read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference. The term "power tool" in the warning...
Page 4: Chain Saw Safety Warnings
4 tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools. 23. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control. 24. Use the power...
Page 5: Additional Safety Rules
5 014316 − do not overreach and do not cut above shoulder height. This helps prevent unintended tip contact and enables better control of the chain saw in unexpected situations. − only use replacement bars and chains specified by the manufacturer. Incorrect replacement bars and chains may cause chai...
Page 6
6 using the saw in the open air, ensure that the cable employed is intended for open-air use and is rated accordingly. 3. Keep the cord away from the cutting area and to position cord so that it will not be caught on branches, and the like, during cutting. 4. Do not operate the chain saw in the vici...
Page 7: Save These Instructions.
7 safety features 1. Always check that the safety features are in working order before starting work. Do not use the chain saw if the safety features are not working properly. − chain brake: the chain saw is fitted with a chain brake which brings the saw chain to a standstill within a fraction of a ...
Page 8: Designation Of Parts
8 designation of parts (nut model: the sprocket cover is tightened by nuts.) for model uc3050a, uc3550a, uc4050a, uc4550a 1 2 3 4 5 6 9 10 8 014372 (lever model: the sprocket cover is tightened by lever.) for model uc3051a, uc3551a, uc4051a, uc4551a 1 2 3 4 5 6 9 10 8 7 014373.
Page 9: Assembly
9 (for all models) 14 12 11 15 13 17 16 18 014514 cord hook 1 2 3 4 5 6 7 9 8 10 11 12 13 spike bumper 18 14 15 16 17 rear handle switch trigger oil filler cap front handle front hand guard guide bar saw chain lever adjusting screw/dial oil level sight rear hand guard lock-off button chain catcher g...
Page 10
10 to remove the saw chain, perform the following steps: 1. Loosen the sprocket cover. 2. (for nut models) turn the chain adjusting screw counterclockwise to release the saw chain tension. (for lever models) turn the adjusting dial to "-" direction to loosen the saw chain tension. 1 014515 1 014516 ...
Page 11: Operation
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. Keep lifting up the guide bar tip slightly to keep the guide bar horizontal. 3. Turn the adjusting screw / dial to...
Page 12
12 reclaimend oil 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 environme...
Page 13
13 checking the chain brake note: • if the chain saw fails to start, check whether the chain brake is released. To release the chain brake, pull the hand guard backwards firmly until you feel it engage. 1 2 3 014387 1 3 2 014439 check the chain brake as follows: 1. Hold the chain saw with both hands...
Page 14
14 bucking 1 014389 for bucking cuts, rest the spike bumper shown in the figure on the wood to be cut. With the saw chain running, saw into the wood, using the rear handle to raise the saw and the front one to guide it. Use the spike bumper as a pivot. Continue the cut by applying slight pressure to...
Page 15: Maintenance
15 (3) the base of the trunk is free of foreign objects, roots and ranches; (4) no persons or objects are present over a distance of 2 1/2 tree lengths in the direction in which the tree will fall. − consider the following with respect to each tree: • direction of lean; • loose or dry branches; • he...
Page 16
16 sharpening the saw chain caution: • always withdraw the mains plug and wear safety gloves when performing work on the saw chain. 006924 sharpen the saw chain when: − mealy sawdust is produced when damp wood is cut; − the chain penetrates the wood with difficulty, even when heavy pressure is appli...
Page 17
17 30 006928 − after sharpening the chain, check the height of the depth gauge using the chain gauge tool (optional accessory). 014344 − remove any projecting material, however small, with a special flat file (optional accessory). − round off the front of the depth gauge again. Cleaning the guide ba...
Page 18
18 replacing carbon brushes 1 001145 remove and check the carbon brushes regularly. Replace when they wear down to the limit mark. Keep the carbon brushes clean and free to slip in the holders. Both carbon brushes should be replaced at the same time. Use only identical carbon brushes. 1 2 014395 use...
Page 19: Trouble Shooting
19 trouble shooting before asking for repairs, conduct your own inspection first. If you find a problem that is not explained in the manual, do not attempt to dismantle the tool. Instead, ask makita authorized service centers. No oil on the chain. Chain does not stop even the chain brake is engaged....
Page 20
20 makita corporation www.Makita.Com 885287-3.