Chain Maintenance - Ryobi RY40505 Manuel D'utilisation

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Proper chain tension is critical to the performance

of your chain saw. Always check chain tension

before using the saw and periodically until the

work is complete.

A cold chain is correctly tensioned when there is

no slack on the underside of the guide bar. The

chain should be snug, but still able to be turned

by hand without binding.

A warm chain is correctly tensioned when the flats

on the tie straps hang approximately .050 inches

out of the bar groove. The tip of the combination

wrench provided is approximately this size and

can be used to help determine if a warm chain is

correctly tensioned.

If adjustment is needed:

 Make sure the bar mounting nuts are loosened

to finger tight.

 Raise the tip of the guide bar and continue to

hold up until the end of this procedure.

 Turn the chain tensioning screw clockwise until

the flats on the tie straps of the chain contact

the bar, making sure the drive links are seated

inside the bar groove.

 Retighten the bar mounting nuts securely.

 Release the tip of the guide bar and verify the

chain is now correctly tensioned using the

guidelines above.

NOTE: If the chain is too tight and will not

rotate, loosen the chain cover screw slightly,

then turn the chain tensioning screw 1/4 turn

counterclockwise. Lift up the tip of the guide bar,

retighten the chain cover screw securely, then

verify the chain will now rotate without binding.

NOTE: New chains tend to stretch; check the

chain tension frequently and tension as required.

NOTICE:

A chain tensioned while warm may be too tight

upon cooling. Check the "cold tension" before

next use to avoid possible injury.

MAINTENANCE

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