Ryobi RY40500 Manuel D'utilisation page 22

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 chain saw.
 Rotate the chain cover lock knob counterclock-
wise and remove knob.
 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.
WARNING:
When placing the bar on the bar studs, ensure
that the chain tensioning pin is in the chain ten-
sion pin hole. Failure to properly place the chain
tensioning pin in the chain tensioning pin hole
could cause the chain to come loose, resulting
in serious personal injury.
 Replace the chain cover.
 Replace the chain cover lock knob; rotate knob
clockwise to tighten. The bar should still be free
to move for tension adjustment.
 Remove all slack from the chain by turning the
chain tensioning knob clockwise until the chain
seats snugly against the bar with the drive links
in the bar groove.
 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 clockwise.
Repeat this process until sag does not exist.
MAINTENANCE
CHAIN
TENSIONING
KNOB
22 - English
CHAIN COVER
MOUNTING
SURfACE
BAR
CUTTERS
CHAIN ROTATION
CHAIN DRIVE LINKS
LOCK KNOB
Fig. 25
CHAIN
CHAIN
COVER
CHAIN COVER
LOCK KNOB
Fig. 26
Fig. 27