Ryobi RY40PH01 Manuel D'utilisation page 43

WARNING:
When servicing, use replacement parts that meet or
exceed original product specifications. Use of any other
parts could create a hazard or cause product damage.
NOTICE:
Periodically 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 contact customer service or a quali-
fied service center for assistance.
GENERAL MAINTENANCE
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.
WARNING:
To avoid possible serious injury, never touch or adjust
the chain while the motor is running. The chain is very
sharp; always wear protective gloves when performing
maintenance to the chain.
REPLACING THE BAR AND CHAIN
See Figures 10 - 15.
Replacement Bar Part Number: 682802001
Replacement Chain Part Number: 682803001
WARNING:
To avoid possible serious injury, stop engine or motor and
remove the spark plug wire or disconnect from power
supply before replacing the bar, chain, or performing any
maintenance operation.
„ Remove the bar nut and drivecase cover.
„ The bar contains a bar stud slot that fits over the bar stud.
„ The bar also contains a chain tensioning pin hole which
fits over the chain tensioning pin.
„ Place the bar onto the bar stud so that the chain tension-
ing pin fits into the chain tensioning pin hole.
MAINTENANCE
„ Fit the chain over the sprocket and into the bar groove.
The cutters on the top of the bar should face toward the
bar tip, in the direction of the chain rotation.
„ Replace the drive case cover and reinstall the bar nut.
Tighten the bar nut finger tight only; the bar must be free
to move for tension adjustment.
„ Remove all slack from chain by turning the chain tension-
ing screw clockwise, assuring that the chain seats into
the bar groove during tensioning.
„ Lift the tip of the bar up to check for sag. Release the tip
of the bar, and turn the chain tensioning screw 1/2 turn
clockwise. Repeat this process until sag does not exist.
„ Hold the tip of the bar up and tighten the bar nut securely.
„ Chain is correctly tensioned when there is no slack on
the underside of the bar and the chain is snug, but can
be turned by hand without binding.
NOTE: If chain is too tight, it will not rotate. Loosen the bar nut
slightly and turn adjusting screw 1/4 turn counterclockwise.
Lift the tip of the bar up and retighten bar nut.
Check the chain tension frequently when operating the
unit. Never touch or adjust the chain while the engine or
motor is running. The chain is very sharp; always wear pro-
tective gloves when performing maintenance to the chain.
POWER HEAD IDLE SPEED ADJUSTMENT
(GAS POWER HEADS ONLY)
If the chain turns at idle, the idle speed screw needs adjusting
on your gas power head engine. Turn the idle speed screw
counterclockwise to reduce the idle RPM and stop the chain
movement. Refer to your power head Operator's Manual for
more details. If the chain still moves at idle speed, contact
a service dealer for adjustment and discontinue use until
the repair is made.
The chain should never turn at idle when using a gas
power head. Turn the idle speed screw "T" counter-
clockwise to reduce the idle RPM and stop the chain, or
contact a service dealer for adjustment and discontinue
use until the repair is made. Serious personal injury could
result from the chain turning at idle.
CHAIN TENSION
See Figures 16 - 17.
„ Stop the engine or motor and remove the spark plug
wire or disconnect from power supply before setting the
chain tension. Make sure the guide bar nut is loose to
finger tight, turn the chain tensioning screw clockwise to
tension the chain. Refer to Replacing the Bar and Chain
for additional information.
9 — English
WARNING:
WARNING: