Ryobi RBC254SBO, User Manual, Page: 37 / 512

35
English (Original instructions)
adjusted or the product needs an urgent maintenance
by a qualified technician.
■ You may make adjustments and repairs described
here. For other repairs, have the product serviced by
an authorised service centre.
■ Consequences of improper maintenance may
include excess carbon deposits resulting in loss of
performance and discharge of black lubricant residue
dripping from the muffler.
■ Make sure all guards, straps, deflectors and handles
are properly and securely attached to avoid the risk of
personal injury.
MAINTENANCE SCHEDULE
Check if fastener is fully
tightened Before each use
Check: Cutting attachment
must not rotate in idle mode ² Before each use
Check fuel hose Before each use
Check all hose connections Before each use
Clean fuel tank and fi lter 1 Every 3 months or 50 hours
of operation
Replace fuel fi lter 1 Every year or after 300
hours or operation
Check fuel cap or fuel tank
vapor vent (if equipped) for
leakage Before each use
Clean air fi lter Every 25 hours
Change air fi lter Every year or after 300
hours or operation
Clean or adjust spark plug Every 6 months or 100
hours of operation
Replace spark plug Every year or after 300
hours or operation
Clean spark arrestor Every 25 hours
Replace spark arrestor Every year or after 300
hours or operation
Clean the exhaust port
and silencer Every 25 hours
1 These items should only be carried out by an authorised service
centre.
2 If this requirement is not met, contact an authorised service centre
for repair or adjustment.
STRING REPLACEMENT
(See Fig 9)
■ Ensure the product is in the off position.
■ Use a 2.4mm diameter monofilament string.
■ Cut one piece of string approximately 5.4 m in length
■ Rotate the bump knob clockwise as necessary to align
the arrows on the bump knob with the arrows on the
lower housing of string head.
■ Insert one end of the string into the eyelet located on
the side of the string head and push until string comes
out through eyelet on the other side. Continue to push
string through the string head until the middle section
of the string is inside the string head and string outside
the string head is evenly divided on each side.
■ Rotate the knob on the string head clockwise to wind
the string.
■ Wind the string until approximately 20 cm remains
protruding from the string head.
BLADE PROTECTOR
(See Fig 8)
Always place the blade protector on the blade when the
product is not in use. The blade protector has clips round
the edges to snap over the blade and keep it in place.
Wear gloves and be cautious when handling the blade.
NOTE: Always remove the blade protector before using
the product. If not removed, the blade protector could
become a thrown object as the blade begins to turn.
CLEANING THE EXHAUST PORT AND SILENCER
Depending on the type of fuel used, the type and amount
of lubricant 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, a quali
fi ed service technician will need to
remove these deposits to restore performance.
SPARK ARRESTOR
It is recommended to clean or replace the spark arrestor
every 25 hours to ensure proper performance of your
product. Spark arrestors may be in different locations
depending on the model purchased. Please contact your
nearest service dealer for the location of the spark arrestor
for your model.
ATTACHING THE HANGER CAP
RBC254SESO
(See Fig. 10)
To use the hanger cap, push in the button and place the