20
CARE AND MAINTENANCE
Chain tension
• Stop the motor and remove the battery before setting the
chain tension. Turn the bar cover knob counterclockwise
to loosen the bar cover but do not remove the bar cover.
Turn the chain tensioning screw clockwise to tension
chain. Turn the guide bar knob clockwise to tighten. Refer
to the Replacing the bar and chain section for additional
information.
Note:
A cold chain is correctly tensioned when there is
no slack on the underside of the guide bar, the chain is
snug, but it can be turned by hand without binding.
•
Chain must be retensioned whenever the flats on the
drive links hang out of the bar groove.
• During normal operation, the temperature of the chain will
increase. The drive links of a correctly tensioned warm
chain will hang approximately 1/16 in. (1.58 mm) out of
the bar groove.
Note:
New chain tends to stretch; check chain tension
frequently.
Flats
1/16 in. (1.58 mm)
