Ryobi RY40502 - Manual (Page 23)

23 - English
MAINTENANCE
WARNING:
When servicing, use only identical replacement
parts. Use of any other parts can create a
hazard or cause product damage.
WARNING:
Always wear eye protection with side shields
marked to comply with ANSI Z87.1 as well as
head and hearing protection when operating
this equipment. Failure to do so could result in
objects being thrown into your eyes and other
possible serious injuries.
WARNING:
To avoid serious personal injury, always remove the
battery pack from the product when cleaning
or performing any maintenance.
GENERAL MAINTENANCE
Before each use, inspect the entire product for
damaged, missing, or loose parts such as screws,
nuts, bolts, caps, etc. Tighten securely all fasteners
and caps and do not operate this product until all
missing or damaged parts are replaced. Please call
1-800-860-4050 or contact an authorized service
center for assistance.
Avoid using solvents when cleaning plastic parts.
Most plastics are susceptible to damage from
various types of commercial solvents and may be
damaged by their use. Use clean cloths to remove
dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline,
petroleum-based products, penetrating
oils, etc., come in contact with plastic
parts. Chemicals can damage, weaken or
destroy plastic which could result in serious
personal injury.
REPLACING BAR AND CHAIN
See Figures 24 - 30.
WARNING:
Remove the battery pack from the chain saw and
make sure the chain has stopped before you do
any work on the saw. Failure to do so may result
in accidental starting and possible serious injury.
WARNING:
The safety instructions in this section are to
protect the user from serious personal injury.
CAUTION:
Always wear gloves when handling the bar and
chain; these components are sharp and may
contain burrs.
WARNING:
Never touch or adjust the chain while the
motor is running. The saw chain is very sharp;
always wear protective gloves when performing
maintenance to the chain to avoid possible
serious lacerations.
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.
 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.