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10 

CAUTION: 

• 

Excessively high tension of saw chain may cause 
breakage of saw chain,    wear of the guide bar and 
breakage of the adjusting dial. 

• 

Installing or removing saw chain should be carried 
out in a clean place free from sawdust and the like. 

OPERATION 

Lubrication 

1

2

3

4

 

 

010920 

Saw chain is automatically lubricated when the tool is in 
operation. 
Check the amount of remaining oil in the oil tank through 
the oil inspection window. 
To refill the tank, remove the cap from the oil tank 
opening. The oil tank capacity is 80 ml. 
After refilling the tank, always screw the provided oil tank 
cap on the chain saw. 

 

CAUTION: 

• 

When filling the chain saw with chain oil for the first 
time, or refilling the tank after it has been 
completely emptied, add oil up to the bottom edge 
of the filler neck. The oil delivery may otherwise be 
impaired. 

• 

As a saw chain oil, use oil exclusively for Makita 
chain saws or oil available in market. 

• 

Never use oil including dust and particles or volatile 
oil. 

• 

When pruning trees, use botanical oil. Mineral oil 
may harm trees. 

• 

Never force the chain saw when pruning trees. 

• 

Before cutting out, make sure that the provided oil 
tank cap is screwed in place. 

   

010940 

 

Hold the chain saw away from the tree. Start it and wait 
until lubrication on saw chain is adequate. 
Bring the lower guide into contact with the branch to be 
cut before switching on. Cutting without bringing the 
lower guide into contact with the branch may cause the 
guide bar to wobble, resulting in injury to operator. 
Saw the wood to be cut by just moving it down. 

WORKING WITH THE CHAIN SAW 
Pruning trees 

1

 

 

010921 

CAUTION: 

• 

Keep all parts of the body away from the saw chain 
when the motor is operating. 

• 

Hold the chain saw firmly with both hands when the 
motor is running. 

• 

Do not overreach. Keep proper footing and balance 
at all times. 

Bring the lower guide into contact with the branch to be 
cut before switching on. Cutting without bringing the 
lower guide into contact with the branch may cause the 
guide bar to wobble, resulting in injury to operator. 

1

2

   

008576 

When cutting thick branches, first make a shallow 
undercut and then make the finish cut from the top. 

   

001742 

If you try to cut off thick branches from the bottom, the 
branch may close in and pinch the saw chain in the cut. 

1. Lower guide 

1. Oil tank cap 
2. Oil tank opening
3. Oil inspection 

window ( for 
refilling the tank 
with oil) 

4. Oil inspection 

window 

Summary of Contents for BUC250C

Page 1: ...1 ENGLISH Original instructions INSTRUCTION MANUAL IMPORTANT Read Before Using Cordless Chain Saw BUC250 BUC250C 010915 ...

Page 2: ...teries and accumulators and their implementation in accordance with national laws electric equipment and battery pack that have reached the end of their life must be collected separately and returned to an environmentally compatible recycling facility ENE031 1 Intended use The tool is intended for cutting lumbers and logs GEA006 2 General Power Tool Safety Warnings WARNING Read all safety warnings...

Page 3: ...related hazards Power tool use and care 17 Do not force the power tool Use the correct power tool for your application The correct power tool will do the job better and safer at the rate for which it was designed 18 Do not use the power tool if the switch does not turn it on and off Any power tool that cannot be controlled with the switch is dangerous and must be repaired 19 Disconnect the plug fr...

Page 4: ...sion be alert for spring back When the tension in the wood fibres is released the spring loaded limb may strike the operator and or throw the chain saw out of control 9 Use extreme caution when cutting brush and saplings The slender material may catch the saw chain and be whipped toward you or pull you off balance 10 Carry the chain saw by the front handle with the chain saw switched off and away ...

Page 5: ...e battery cartridge 3 If operating time has become excessively shorter stop operating immediately It may result in a risk of overheating possible burns and even an explosion 4 If electrolyte gets into your eyes rinse them out with clear water and seek medical attention right away It may result in loss of your eyesight 5 Do not short the battery cartridge 1 Do not touch the terminals with any condu...

Page 6: ...5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 Lever Front hand guard Top handle Battery cartridge Carabiner or rope attachment point Guide bar Saw chain Sprocket cover Chain cover Lock off button Switch trigger Front handle 010917 ...

Page 7: ...ad and then pull the switch trigger again to restart When the tool does not work even after pulling the switch trigger the battery power auto stop is still at work Charge the battery cartridge before use When the remaining battery capacity becomes low Recharge the battery cartridge Switch action CAUTION Before inserting the battery cartridge into the tool always check to see that the switch trigge...

Page 8: ...r removing the saw chain Always wear gloves when installing or removing the saw chain 1 To remove the saw chain move the lever in the upright position 3 1 2 4 010930 2 Press the lever and with the lever pressed in turn it counterclockwise to loosen the nut until sprocket cover comes off Pressing in the lever leads to the fitting of lever into the nut 3 Turn the adjusting dial counterclockwise to r...

Page 9: ...unterclockwise to loosen the nut lightly Pressing in the lever leads to the fitting of lever into the nut 1 2 3 4 5 2 4 mm 1 2 010936 Turn the adjusting dial to adjust saw chain tension Grasp the saw chain in the middle of the guide bar and lift up The gap between the guide bar and the tie strap of the saw chain should be approx 2 4 mm If the gap is not approx 2 4 mm slightly turn the adjusting di...

Page 10: ...e cutting out make sure that the provided oil tank cap is screwed in place 010940 Hold the chain saw away from the tree Start it and wait until lubrication on saw chain is adequate Bring the lower guide into contact with the branch to be cut before switching on Cutting without bringing the lower guide into contact with the branch may cause the guide bar to wobble resulting in injury to operator Sa...

Page 11: ...chain becomes trapped For this reason cut with the lower edge so that the saw will be deflected away from your body A B A B 006915 Cut wood under tension on the pressure side A first Then make the final cut on the tension side B This prevents the bar from becoming trapped Limbing CAUTION Limbing may only be performed by trained persons A hazard is presented by the risk of kick back When limbing su...

Page 12: ...iameter Do not make the scarf too large Then make the diagonal cut Cut any corrections to the scarf across its entire width 006923 Make the back cut a little higher than the base cut of the scarf The back cut must be exactly horizontal Leave approximately 1 10 of the trunk diameter between the back cut and the scarf The wood fibers in the uncut trunk portion act as a hinge Do not cut right through...

Page 13: ...ned several times have it sharpened in a MAKITA specialist repair shop File and file guiding Use a special round file optional accessory for saw chains with a diameter of 4 mm to sharpen the chain Normal round files are not suitable 1 2 011075 The file should only engage the material on the forward stroke Lift the file off the material on the return stroke Sharpen the shortest cutter first The len...

Page 14: ...ender shaft or the like Insert the battery cartridge into the tool 010926 Pull the switch trigger to flow built up dust or particles off the oil discharge hole by discharging chain oil Remove the battery cartridge from the tool Reinstall the sprocket cover and saw chain on the tool Replacing the sprocket Before fitting a new saw chain check the condition of the sprocket 1 2 010927 CAUTION A worn s...

Page 15: ...stment should be performed by Makita Authorized Service Centers always using Makita replacement parts ACCESSORIES CAUTION 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 Only use accessory or attachment for its stated purpose If you need any assistance f...

Page 16: ...16 Makita Corporation 884950 5 ...

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