Ryobi RY40530 Operation Manual 2 - Page 25

Chain Maintenance, Warning

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MAINTENANCE 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: n Loosen the bar mounting nuts to finger tight. n Raise the tip of the guide bar and continue to hold up until the end of this procedure. n 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. n Retighten the bar mounting nuts securely. n 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 bar mounting nuts slightly, then turn the chain tensioning screw 1/4 turn counterclockwise. Lift up the tip of the guide bar, retighten the bar mounting nuts securely, then verify the chain will now rotate without binding. NOTE: New chains tend to stretch; check the chain tension frequently and adjust as needed. NOTICE: A chain tensioned while warm may be too tight upon cooling. Check the "cold tension" before next use to avoid possible injury. RAKER CLEARANCE .025 in. Fig. 33 CHECK FOR WEAR OR DAMAGE TOP PLATE DRIVE SPROCKET Fig. 34 CUTTING CORNER SIDE PLATE RIVET HOLE DEPTH GAUGE HEEL GULLET TOE Fig. 35 CHAIN MAINTENANCE See Figures 33 - 35. WARNING: Remove the battery pack and make sure the chain has stopped before you do any work on the saw to avoid accidental starting and possible serious personal injury. Use only low-kickback chain on this saw. This fast-cutting chain will provide kickback reduction when properly maintained. For smooth and fast cutting, chain needs to be maintained properly. The chain requires sharpening when the wood chips are small and powdery, 25 - English

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25 - English
Fig. 33
Fig. 34
CHECK FOR WEAR
OR DAMAGE
RAKER CLEARANCE
.025 in.
Fig. 35
CUTTING
CORNER
SIDE PLATE
DEPTH GAUGE
TOE
GULLET
HEEL
RIVET HOLE
TOP PLATE
DRIVE SPROCKET
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:
Loosen the bar mounting nuts 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 bar mounting nuts slightly,
then turn the chain tensioning screw 1/4 turn
counterclockwise. Lift up the tip of the guide bar,
retighten the bar mounting nuts securely, then
verify the chain will now rotate without binding.
NOTE:
New chains tend to stretch; check the
chain tension frequently and adjust as needed.
NOTICE:
A chain tensioned while warm may be too tight
upon cooling. Check the “cold tension” before
next use to avoid possible injury.
MAINTENANCE
CHAIN MAINTENANCE
See Figures 33 - 35.
WARNING:
Remove the battery pack and make sure the
chain has stopped before you do any work on
the saw to avoid accidental starting and pos-
sible serious personal injury.
Use only low-kickback chain on this saw. This
fast-cutting chain will provide kickback reduction
when properly maintained.
For smooth and fast cutting, chain needs to be
maintained properly. The chain requires sharpen-
ing when the wood chips are small and powdery,