Adjusting The Chain Tension - Ryobi RY40509 Manual Del Operador

NOTE: When replacing the guide bar and chain,
always use the specified bar and chain listed in
the Bar and Chain Combinations section later
in this manual.
 Remove the battery pack before you do any
work on the chainsaw.
 Remove the bar mounting nuts using the
combination wrench provided.
 Remove the chain cover.
 Remove the bar and chain from the mounting
surface.
 Remove the old chain from the bar.
 Lay out the new saw chain in a loop and
straighten any kinks. The cutters should face
in the direction of chain rotation. If they face
backwards, turn the loop over.
 Place the chain drive links into the bar groove
as shown.
NOTE: Make certain of direction of chain.
 Position the chain so there is a loop at the back
of the bar.
 Hold the chain in position on the bar and place
the loop around the sprocket.
 Fit the bar flush against the mounting surface
so that the bar studs are in the long slot of the
bar.
 Replace the chain cover ensuring that the
adjusting pin in the chain cover is in the bar
chain tensioning pin hole and that both bar
studs are securely in their respective holes in
the chain cover.
NOTE: The adjusting pin may need to be slightly
repositioned with the chain tensioning screw
so that it is aligned with the position of the bar
chain tensioning pin hole.
 Replace the chain cover and bar mounting nuts.
 Finger-tighten the bar mounting nuts. The bar
must be free to move for tension adjustment.
 Remove all slack from the chain by turning the
chain tensioning screw clockwise until the chain
seats snugly against the bar with the drive links
in the bar groove.
MAINTENANCE
 Lift the tip of the guide bar up to check for sag.
 Hold the tip of the guide bar up and tighten the
bar mounting nuts securely.
The 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 bar nuts slightly and turn the tension adjuster
1/4 turn counterclockwise. Lift the tip of the guide
bar up and retighten the bar nuts securely. Ensure
that the chain will rotate without binding.

ADJUSTING THE CHAIN TENSION

See Figures 26 - 28.
Stop the motor, wait for all moving parts to stop,
and remove the battery pack. Never touch or
adjust the chain while the motor is running. The
saw chain is very sharp. Always wear protective
gloves when performing maintenance on the
chain. Failure to follow these instructions can
result in serious personal injury.
Proper chain tension is critical to the performance
of your chainsaw. 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.
24 - English
WARNING: