Ryobi RLT254CDSO User Manual page 26

Check fuel cap or fuel tank
vapor vent (if equipped) for
leakage
Clean air fi lter
Change air fi lter
Clean or adjust spark plug
Replace spark plug
Clean spark arrestor
Replace spark arrestor
Clean the exhaust port
and silencer
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 HEAD REPLACEMENT
See fi gure 8a.
■ Stop the engine.
■ Align the spanner along both flat side of arbor flange
washer.
■ Turn the string head counterclockwise by hand to
remove old one.
■ Replace a new string head, align the nut in the string
head to the connector shaft of lower boom.
■ Turn the string head clockwise by hand to tighten,
recommended torque is 6 N.M.
LINE REPLACEMENT
See fi gure 8.
■ Ensure the product is in the off position.
■ Use a 2.4 mm diameter monofilament string.
■ Stop the engine.
■ Cut one piece of string approximately 6 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.
English (Original instructions)
Before each use
Every 25 hours
Every year or after 300
hours or operation
Every 6 months or 100
hours of operation
Every year or after 300
hours or operation
Every 25 hours
Every year or after 300
hours or operation
Every 25 hours
■ 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 line.
■ Wind the string until approximately 20 cm remains
protruding from the string head.
CLEANING THE EXHAUST PORT AND MUFFLER
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 gas
powered tool, a qualifi ed service technician will need to
remove these deposits to restore performance.
SPARK ARRESTOR
The spark arrestor must be cleaned or replaced 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.
CLEANING THE AIR FILTER
See fi gure 9.
For proper performance and long life, keep the air fi lter
clean.
■ Ensure the product is in the off position.
■ Remove the air filter cover.
■ Remove the air filter and clean it with warm soapy water.
■ Rinse, and let the air filter dry completely.
■ Work two drops of lubricant into the air filter.
■ Replace the air filter (fits only one way).
■ Replace the air filter cover.
NOTE: The fi lter should be replaced annually for best
performance.
FUEL CAP
A leaking fuel cap is a fi re hazard and must be replaced
immediately.
24
WARNING