MAINTENANCE
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
SS30
BC30
nStop the engine and disconnect the spark plug wire. Hold the string head and unscrew the spool retainer.
To remove the spool retainer:
nTurn the spool retainer counterclockwise for model CS30. Turn the spool retainer clockwise for models SS30 and BC30.
SPOOL
RETAINER
Fig. 24
SPRING
SLOTS
EYELETS
STRING HEAD
SHAFT
Fig. 25
nRemove the empty spool from the string head. Keep the spring attached to the spool.
nTo 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.
nThread 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.
nPush 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.
nMake sure the string head and the spool retainer are installed on the drive shaft.
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