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Page 28 — English
MAINTENANCE
ADJUSTING THE CHAIN TENSION
See Figures 44 - 46.
WARNING:
Never touch or adjust the chain while the engine
is running. The saw chain is very sharp. Always
wear protective gloves when performing main-
tenance on the chain.
Stop the engine before setting the chain ten-
sion.
Slightly loosen the clutch cover lock knob by
pressing in and rotating counterclockwise.
Hold the tip of the guide bar up and turn the
chain tensioning dial clockwise to tension the
chain.
NOTE: A cold chain is correctly tensioned when
there is no slack on the underside of the guide
bar, the chain is snug, and it can be turned by
hand without binding.
Retension the chain whenever the flats on the
drive links hang out of the bar groove.
NOTE: During normal saw operation, the tem-
perature of the chain increases. The drive links
of a correctly tensioned warm chain will hang
approximately .050 in. out of the bar groove.
The tip of the supplied combination wrench
(UT10526 only) can be used as a guide to help
determine the correct warm chain tension.
NOTE: New chains tend to stretch; check
the chain tension frequently and tension as
required.
CAUTION:
A chain tensioned while warm may be too tight
upon cooling. Check the “cold tension” before
next use.
Fig. 44
FLATS ON DRIVE LINKS
≈ .050 in.
Fig. 46
Fig. 45
≈ .050 in.
Fig. 43