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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 23 - 24. 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. SS30 - .095 in. BC30 - .095 in. • Stop the engine and 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 model CS30. Turn the spool retainer clockwise for models SS30 and BC30. • Remove the empty spool from the string head. Keep the spring attached to the spool. • 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. beyond each slot. • Thread the strings into the eyelets in the string head. Carefully push the spool into the string head and reinstall the spool retainer (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. • 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. • Make sure the string head and the spool retainer are installed on the drive shaft. 19 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 25 - 27. Use only monofilament string. Use original manufacturer’s replacement string for best performance. String Diameter: CS30 - .080 in. SS30 - .095 in. BC30 - .095 in. • Stop the engine and disconnect the spark plug wire. Hold the string head and unscrew the spool retainer. To remove the spool retainer: • TurnthespoolretainercounterclockwiseformodelsCS30. 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. 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. extended beyond the slot. Do not overfill. After winding the string, there should be at least 1/4 in. 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. Fig. 26 Fig. 27 SPRING SLOT ARROWS ON SPOOL SECOND STRING FIRST STRING Fig. 25 SPOOL ANCHOR HOLE ARROWS ON SPOOL FIRST STRING SLOT 20 MAINTENANCE CLEANING THE EXHAUST PORT AND MUFFLER Depending on the type of fuel used, the type and amount of oil used, and/or your operating conditions, the exhaust port, muffler, and/or spark arrestor screen may become blocked with carbon deposits. If you notice a power loss with this gas-powered product, you may need to remove these deposits to restore performance. We highly recommend that only qualified service technicians perform this service. SPARK ARRESTOR The spark arrestor must be cleaned or replaced every 25 hours or yearly to ensure proper performance of the product. Spark arrestors may be in different locations depending on the model purchased. Please contact the nearest service dealer for the location of the spark arrestor for this model. REPLACING AND CLEANING AIR FILTER See Figures 28 - 29. A wet or dirty air filter can affect...

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