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155r 12 Volt Battery Trimmer OPERATOR’S MANUAL FOR QUESTIONS, CALL 1-800-345-8746 in U.S. or 1-800-265-6778 in CANADA www.ryobi.com IMPORTANT MANUAL DO NOT THROW AWAY...
• Do not use the unit in the rain. • Do not handle the unit with wet hands. • Use only 0.080 in (2.03 mm) diameter genuine Ryobi replacement line. Never use metal-reinforced line, wire, or rope, etc. These can break off and become a dangerous projectile.
• Do not use charger outdoors. • Use only the following type and size battery: Ryobi part #182391, 12 volt DC, sealed lead-acid battery. • Do not dispose of batteries in a fire. The cell may explode.
RULES FOR SAFE OPERATION SAFETY AND INTERNATIONAL SYMBOLS This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's manual for complete safety, assembly, operating and maintenance and repair information. SYMBOL MEANING •...
RULES FOR SAFE OPERATION KNOW YOUR UNIT APPLICATION Use the Trimmer for; • Cutting grass and light weeds, decorative trimming around trees, fences, etc. Air Vents Overload Protection Switch Battery Door Battery Housing Hand Grip D-handle Lock-Off Button Trigger Motor Wire Housing Tube...
ADJUSTING THE D-HANDLE 1. Hold the unit in the operating position (Fig. 1). Fig. 1 2. Loosen the wing nut (Fig. 2). It is not necessary to remove the wing nut, washer or bolt. 3. Position the D-handle to the location that provides you the best grip, and tighten the wing nut (Fig.
CHARGING THE UNIT Make sure the charging station is securely fastened to a wall and the charger is plugged into a working wall outlet. NOTE: Allow the unit to charge for at least 36 hours prior to first use. NOTE: If you are using the optional Battery and Charger Accessory Kit to charge your battery.
The left arm is straight, the left hand holding the D-handle. • The unit is at waist level. • The trimmer bump head is parallel to the ground and easily contacts the material to be cut without the operator having to bend over (Fig. 8). Overload...
Also, the clippings are thrown away from the operator. • Slowly move the trimmer into and out of the area being cut, maintaining the trimmer at the desired cutting height. This can be either a forward- backward or side-to-side motion. Cutting shorter lengths produces best results.
• Wipe off the unit with a clean, dry, soft cloth. • Keep air vents free from debris at all times. LINE INSTALLATION Always use genuine Ryobi 0.080 in. (2.03 mm.) replacement line. Using line other than specified may cause the unit to overheat or fail.
MAINTENANCE AND REPAIR INSTRUCTIONS 7. Insert the end of the line into one of the two 0.80 holding slots (Fig. 14). 0.80 Holding Slot Fig. 14 8. Insert the end of the line through the eyelet in the outer spool (Fig. 15) Fig.
MAINTENANCE AND REPAIR INSTRUCTIONS BATTERY PACK REPLACEMENT To preserve natural resources, please recycle or dispose of properly. THIS PRODUCT CONTAINS A SEALED LEAD-ACID BATTERY AND MUST BE DISPOSED OF PROPERLY. Local, state, or federal laws may prohibit disposal of sealed lead-acid batteries in ordinary trash.
Any other type may cause damage to the unit, batteries and possible injury. Your trimmer requires a Ryobi #182534 12V charger and #180295 charging station. The charging instructions refer only to these parts. NOTE: If you are using the optional Battery and Charger Accessory Kit to charge your battery.
MOTOR OPERATES SLOWLY OR WILL NOT OPERATE C A U S E Battery is not charged Overload protection switch has popped BATTERY WILL NOT CHARGE C A U S E No power to charger or battery Battery has failed CUTTING ATTACHMENT WILL NOT ADVANCE LINE C A U S E Cutting attachment bound with grass Cutting attachment out of line...
RYOBI Operator’s Manual. This warranty does not apply to any damage to the RYOBI Product that is the result of improper maintenance or to any RYOBI Product that has been altered or modified so as to...