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Page 19
MAINTENANCE
Fig. 24
SPOOL
RETAINER
Fig. 25
SPRING
SLOTS
STRING HEAD
EYELETS
SHAFT
n Remove the empty spool from the string head. Keep the
spring attached to the spool.
n To install the new spool, make sure the two strings are
captured in the slots opposite each other on the new
spool. Make sure the ends of each string are extended
approximately 6 in. (152 mm) beyond each slot.
n Thread the strings into the eyelets in the string head.
Carefully push the spool into the string head (gently pull
the strings to the outside if necessary). When the spool
is positioned in the string head, grasp the strings and pull
sharply to release them from the slots in the spool.
n Push down and turn the spool counterclockwise until it no
longer turns. Hold the spool down and rotate clockwise
a small amount. Release the spool. The spool should be
locked down in the string head. If not, hold down and
rotate until locked.
n Make sure the string head and the spool retainer are
installed on the drive shaft.
WARNING:
When servicing, use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
WARNING:
Always wear safety goggles or safety glasses with side
shields during tool operation. If operation is dusty, also
wear a dust mask.
WARNING:
Before inspecting, cleaning, or servicing the machine,
shut off engine, wait for all moving parts to stop, and
disconnect spark plug wire and move it away from spark
plug. Failure to follow these instructions can result in
serious personal injury or property damage.
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 may result in serious personal
injury.
You can often make adjustments and repairs described here.
For other repairs, have the trimmer serviced by an authorized
service dealer.
SPOOL REPLACEMENT
NEW PREWOUND SPOOL
See Figures 24 - 25.
If replacing string only, refer to “String Replacement” later
in this manual.
Use only monofilament string. Use original manufacturer’s
replacement string for best performance.
String Diameter:
CS30 - .080 in. (2.0 mm)
SS30 - .095 in. (2.4 mm)
BC30 - .095 in. (2.4 mm)
n Stop the engine and disconnect the spark plug wire. Hold
the string head and unscrew the spool retainer.
To remove the spool retainer:
n Turn the spool retainer counterclockwise for model CS30.
Turn the spool retainer clockwise for models SS30 and
BC30.