NOTICE:
New chains tend to stretch;
check chain tension frequently and
tension as required.
NOTICE:
A chain tensioned while it is
warm may be too tight upon cooling.
Check the cold tension before next
use.
Chain Maintenance
WARNING:
before performing any maintenance;
failure to heed this warning could
result in serious personal injury.
WARNING:
handling the saw chain; these
components are sharp and may
contain burrs.
Use only low-kickback chains on this saw. This fast
cutting chain will provide kickback reduction when
properly maintained.
A properly sharpened saw chain cuts through
wood effortlessly, even with very little pressure.
Never use a dull or damaged saw chain. A dull saw
chain cutter leads to increased physical strain,
increased vibration load, unsatisfactory cutting
results and increased wear.
For smooth and fast cutting, the chain needs to be
maintained properly. The chain requires
sharpening when the wood chips are small and
powdery, the chain must be forced through the
wood during cutting, or the chain cuts to one side.
During maintenance of your chain, consider the
following:
Remove the battery pack
Always wear gloves when
•
Improper filing angle of the side plate can
increase the risk of a severe kickback.
•
Raker (depth gauge) clearance. TOO low
increases the potential for kickback. Not low
enough decreases cutting ability.
•
If cutter teeth have hit hard objects, such as
nails and stones, or have been abraded by mud
or sand on the wood, have the chain sharpened
by a qualified service technician.
NOTICE:
for wear or damage when replacing
the chain. If signs of wear or damage
are present in the areas indicated,
have the drive sprocket replaced by
qualified service technician.
How to Sharpen the Cutters
Be careful to file all cutters (Figure. 32) to the
specified angles and to the same length, as fast
cutting can be obtained only when all cutters are
uniform.
1. Remove the battery pack. Wear gloves for
protection.
2. Properly tension the chain prior to sharpening.
Refer to the section "ADJUSTING THE CHAIN
TENSION" earlier in the manual.
3. Use a 0.177" (4.5mm) diameter round file and
holder (available separately). Do all your filing
at the middle of the guide bar.
4. Keep the file level with the top plate of the
tooth. Do not let the file dip or rock.
5. Keep a correct sharpening angle of 30o
between the file and saw the chain; see Figure
33 and 34. Always use a file folder (available
separately) when sharpening saw chains by
hand.
File
sharpening angle.
6. Using light but firm pressure, stroke towards
the front corner of the tooth. Lift the file from
the steel on each return stroke.
7. Make a few frim strokes on every tooth. File all
left hand cutters in one direction. Then move
to the opposite side and file the right-hand
cutters in the opposite direction. Occasionally
remove filings from the file with a wire brush
(Figure 35).
16
Inspect the drive sprocket
holders
have
markings
for