Ryobi RY43006 Manuel d'utilisateur Page 23

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23
n Reinstall the chain cover assembly, bushing and guide
bar nut. Tighten the guide bar nut finger tight only. The
bar must be free to move for tension adjustment.
NOTE: When replacing the chain cover assembly assure
that the adjusting pin is in the chain tension pin hole and
that the chain cover assembly fits flush to the housing.
NOTE: Chain tensioning knob has two markings: “+”
tightens the tension of chain and “-” loosens the ten-
sion.
n Remove all the slack from the chain by turning the chain
tensioning knob “+” until the chain seats snugly against
the bar with the drive links in the bar groove.
n Lift the tip of the guide bar up to check for sag. Release
the tip of the guide bar and turn the chain tensioning
knob 1/2 turn “+”. Repeat this process until sag does not
exist.
n Hold the tip of the guide bar up and tighten the guide bar
nut securely.
n Chain is correctly tensioned when there is no sag on the
underside of the guide bar, the chain is snug, but it can
be turned by hand without binding.
NOTE: If chain is too tight, it will not rotate. Loosen the
guide bar nut slightly and turn chain tension knob 1/4 turn
“-”. Lift the tip of the guide bar up and retighten guide
bar nut securely. Assure that the chain will rotate without
binding.
Fig. 30
Fig. 31
SCRENCH
LIFT THE TIP OF
THE GUIDE BAR
UP TO CHECK FOR
SAG
MAINTENANCE
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