Ryobi Complete Guide to String Replacement and Maintenance for Trimmers

MAINTENANCE

To install the spool retainer:

Turn the spool retainer clockwise for model CS30. Turn the spool retainer counterclockwise for models SS30 and BC30.

Pull the strings again to rotate the spool into cutting position. Push the spool retainer down while pulling on string(s) to manually advance the string and to check for proper assembly of the string head.

STRING REPLACEMENT

See Figures 26 - 28.

SPRING SPOOL

ARROWS ON

SPOOL

ANCHOR

HOLE

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)

Stop the engine, disconnect the spark plug wire. Hold the string head and unscrew the spool retainer.

To remove the spool retainer:

 Turn the spool retainer counterclockwise for models CS30.

FIRST STRING

FIRST STRING

SLOT

Fig. 26

Turn the spool retainer clockwise for models SS30 and

BC30.

 Remove the spool from the string head.

NOTE: Keep the spring attached to the spool. Remove

any old string remaining on the spool.

 Cut two pieces of string, each being approximately 9 ft.

(2.7 m) long.

 Insert the first string into the anchor hole in the upper part

of the spool. Wind the first string around the upper part of

the spool counterclockwise, as shown by the arrows on

the spool. Place string in the slot on upper spool flange,

leaving about 6 in. (152 mm) extended beyond the slot.

Do not overfill. After winding the string, there should be

at least 1/4 in. (6 mm) between the wound string and the

outside edge of the spool.

 Repeat above step with second string, using the bottom

part of spool. Do not overfill.

 Replace the spool and the spool retainer. Refer to “Spool

Replacement” earlier in this manual.

SECOND

STRING

Fig. 27

SLOT	ARROWS ON
	SPOOL

Fig. 28

20