MAINTENANCE
WARNING
Never run the saw without all the parts, including
the drivecase cover and starter housing, securely
in place. Because parts can fracture and pose a
danger of thrown objects, leave repairs of the
flywheel and clutch to trained Ryobi service
dealer personnel.
NOTE:
Depending on the type of fuel used, the type and
amount of oil used, and/or your operating conditions,
the exhaust port and silencer may become blocked with
carbon deposits. If you notice a power loss with your
petrol-powered tool, you may need to remove these
deposits to restore performance. We highly recommend
that only qualified service technicians perform this service.
CHECKING THE FUEL FILTER (Fig. 70)
Check the fuel filter (
A
) periodically. Replace it if
contaminated or damaged.
REPLACING THE SPARKING PLUG (Fig. 71)
This engine uses a Champion RCJ-
4
with 0.63 mm
(0.025 in.) electrode gap. Use an ex act replacement and
replace every six months, or more frequently if necessary.
1. Loosen the sparking plug by turning it anticlockwise
with a spanner.
2. Remove the sparking plug.
3. Hand thread the new sparking plug, turning it
clockwise.
NOTE:
Be careful not to cross-thread the sparking plug.
Cross-threading will seriously damage the product.
CLEANING THE SPARK ARRESTING
SILENCER (Fig. 72)
The silencer (
A
) is equipped with a spark arrester
screen (
B
). A faulty spark arrester screen can create a
fire hazard. Through normal use the screen can become
dirty and should be inspected weekly and cleaned as
required. Always keep the silencer and spark arrester on
your saw in good condition.
WARNING
Silencer surfaces are very hot during and after
operation of the chainsaw. Keep all body parts
away from the silencer. Serious burns may occur
if contact is made with the silencer.
1. Allow the silencer to cool.
2. The spark arrester screen (
B
) is retained by the
deflector (
C
). Remove the nuts (
D
) and screen
retainer to access the spark arrester screen.
3. Replace the spark arrester screen if it is cracked or
otherwise deteriorated.
CHAIN BRAKE (Fig. 73 & 74)
■
Remove the clutch cover and clean the chain brake
components. Check wear on the brake band (
A
).
If brake band is worn or deformed, have it serviced at
your nearest authorised service dealer. The band
thickness should not be less than 0.60 mm
(0.024 in.), or worn halfway through.
■
Always keep the chain brake mechanism clean (
B
)
and lightly lubricate the linkage (
C
).
■
Always test the chain brake performance after servicing
or cleaning. Refer to “Operation – Operating Chain
Brake” earlier in this manual for additional information.
■
Check and, if damaged, replace the chain catcher (
D
).
STORING THE CHAINSAW (1 MONTH OR
LONGER)
1. Drain all fuel from tank into a container approved for
petrol.
2. Run the engine until it stops. This will remove all fuel-
oil mix that could become stale and leave varnish and
gum in the fuel system.
3. Drain all bar and chain oil from tank into a container
approved for oil.
4. Clean all foreign material from the saw.
5. Store it in a well-ventilated place that is inaccessible
to children.
NOTE:
Keep away from corrosive agents such as garden
chemicals and de-icing salts.
Abide by all government and local regulations for the safe
storage and handling of petrol. Excess fuel should be used
in other 2-cycle engine powered equipment.
14
English
PCN 4040_4545 manual
Summary of Contents for PCN 4040
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