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20
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.
• Chain must be retensioned whenever the ats 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. (1.3 mm) out of the bar groove.
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.
NOTE: New chain tends to stretch; check chain tension frequently.
CAUTION
Chain tensioned while warm may be too tight upon cooling. Check the “cold tension” before next
use.
FLATS
APPROX 1/16" (1.3 mm)
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