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g. Lift the tip of the guide bar up to check for
sag (Fig. 18g). Hold the tip of the guide bar
up and tighten the side-cover knob securely
and fold the tab. The chain is automatically
tensioned now. The chain is correctly
tensioned when there is no sag on the
underside of the guide bar and the chain is
snug, but it can be turned by hand without
binding (Fig. 18h).
If chain is too tight, it will not
NOTICE
rotate. Loosen the side-cover
knob slightly. Lift the tip of the guide bar up and
retighten the side-cover knob securely. Assure
that the chain will rotate without binding.
Adjusting the Chain Tension
a. Stop the saw and remove the battery pack
before adjusting the chain tension.
b. Loosen the side-cover knob. This will release
the tension pin (shown in Fig. 18e) 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. 19a).
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. 19b).
Fig . 19a
Approximately 0.050" (1.3 mm)
Fig . 18g
Fig . 18h
Fig . 19b
Flats of drive links
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