Makita UC 3001A, Instruction Manual

Page: 14 / 20

14
Testing the run-out brake
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MAINTENANCE
Sharpening the saw chain
When working on the saw chain you must always pull
out the power supply plug and wear protective gloves.
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The chain needs sharpening when:
- the sawdust from sawing humid wood looks like wood flour.
- the saw chain penetrates the wood only under great
pressure.
- the cutting edge is visibly damaged.
- the sawing device is pulled to the left or the right during the
sawing operation. This is caused by uneven sharpening of
the chain or by damage to one side of it.
Important: Sharpen frequently, but without removing
too much metal!
Generally, 2-3 strokes of the file will be enough.
Have the chain resharpened in a service center when you
have sharpened it yourself several times.
Checking the chain lubrication
Never saw when a sufficient chain lubrication is not guaranteed.
Otherwise the life of the sawing device will be reduced. Before
starting work check the oil level in the tank and the oil feeding.
Check the fed oil quantity by following the instructions below:
- Start the electric chain saw.
- Hold the running chain saw approx. 15 cm above a trunk or
the ground (use an appropriate surface).
If the lubrication is sufficient, you will see a light oiltrace
because oil will be centrifuged from the chain saw. Pay attention
to the direction the wind is blowing and avoid unnecessary
exposure to the oil spray!
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Proper sharpening:
CAUTION:
Use only chains and guide bars designed for this saw (see
the Extract from the spare-parts list)!
-
All cutters must be of the same length (dimension a).
Cutters with different lengths result in rough running of the
chain and can cause cracks in the chain.
- Minimum cutter length is 3 mm (0.11"). Do not resharpen
the chain when the minimum cutter length has been reached;
at this point, the chain must be replaced (see the Extract
from the spare-parts list and "Replacing the chain").
- The depth of the cut is determined by the difference in
height between the depth limiter (round nose) and the
cutting edge.
- The best results are obtained with a depth-limiter depth of
0.65 mm (.025").
CAUTION:
Excessive depth increases the
risk of kickback!
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min.
3 mm (0.11”)
Do not work with the saw without first testing the run-out
brake!
- Start the motor as described (make sure you have a good
footing, and place the chain saw on the ground in such a
way that the guide bar is free of contact).
- Grasp the tubular handle firmly with one hand and hold the
grip with the other.
- Switch the motor on and then back off. The chain should
come to a full stop within two second of switching off the
motor.
Important: If the saw chain does not stop within two
second when you carry out this test, do not use the
saw! Inspect the carbon brushes (see page 16).
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0.65 mm
(.025")
0.65 mm
(.025")