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CARE AND MAINTENANCE
12. Adjusting the Chain Tension
a. Stop the saw and remove the battery pack
before adjusting the chain tension.
b. Loosen the side-cover knob (G). This will
release the tensioning end-piece (shown in
Fig. 11e) and loosen the chain tension. Lift,
pull and push the guide bar to help adjust
chain tension, then retighten the side-cover
knob securely. Assure that the chain will rotate
without binding.
• During normal saw operation, the temperature
of the chain will increase. The drive links of
a correctly tensioned warm chain will hang
approximately 0.050 in. (1.3 mm) out of the bar
groove (Fig. 12a).
• A cold chain is correctly tensioned when there is
no slack on the underside of the guide bar and
the chain is snug, but it can be turned by hand
without binding. The chain must be re-tensioned
whenever the flats of the drive links do not sit in
the bar groove (Fig. 12b).
NOTICE:
• New chains tend to stretch; check chain tension
frequently and tension as required.
• A chain tensioned while it is warm may be too
tight upon cooling. Check the cold tension before
next use.
13. Chain Maintenance
WARNING
• Remove the battery pack before performing any maintenance. Failure to heed this warning
could result in serious personal injury.
• Always wear gloves when handling the saw chain. The chain is 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 saw chain needs to be maintained properly. 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 are the indicators that the chain requires sharpening. During
maintenance of your saw chain, consider the following:
• 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.
12a
Approximate 0.050" (1.3 mm)
12b
Flats of drive links
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