Operator’s Manual ® 4-Cycle PROPANE POWERED TRIMMER Models: 104.79212 104.79211 16.4 oz. / 465 g propane bottle not included • SAFETY • ASSEMBLY • OPERATION • MAINTENANCE • TROUBLESHOOTING • WARRANTY For assistance with assembly or operation call: 1-800-235-5878 CAUTION: Before using this product, read this manual and follow all safety rules and operating instructions. Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A. Visit our web site: www.sears.
SERVICE AND SAFETY CRAFTSMAN WARNING: 4-CYCLE PROPANE TRIMMER When using this unit, you must follow these safety rules. Please read these to ensure the safety of the operator and any bystanders. Please keep these instructions for later use. TABLE OF CONTENTS Service and Safety ..................................................................... 2 Safe Operation Rules ................................................................. 3 Understanding your trimmer.........................................
SAFE OPERATION RULES • Never start or run the unit inside a closed room or building. Breathing exhaust fumes can be fatal. Operate this unit only in a well ventilated outdoor area. • Do not operate the engine faster than the speed needed to cut, trim or edge. Do not run the engine at high speed when not cutting. • Wear safety glasses or goggles that meet ANSI Z87.1 standards and are marked as such. Wear ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty.
UNDERSTANDING YOUR TRIMMER SAFETY & 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. I WARNING: Indicates danger, warning or caution. May be used in conjunction with other symbols or pictographs. o WARNING: READ OPERATOR’S MANUAL: Read the operator’s manual(s) and follow all warnings and safety instructions.
ASSEMBLY TOOL KIT FOR STRAIGHT SHAFT TRIMMERS Your unit is provided with a tool kit (Fig.1). This tool kit consists of the following: Place the cutting attachment shield onto the shaft mount. Install using provided hardware in the sequence as shown (Fig.3). 4 mm Allen Wrench Shaft Mount 5 mm Allen Wrench 8 & 10 mm Wrench Four 5 mm Screws with captive washers Cutting Attachment Shield Four Washers Plate Washer Washer Lock Washer Straight Shaft models include 2 Plate Washers Attaching Screws Fig.
OIL INFORMATION RECOMENDED OIL TYPE 2. Place the unit on a level surface (Fig. 6). Using the proper type and weight of oil in the crankcase is extremely important. Check the oil before each use and change the oil regularly. Failure to use the correct oil, or using dirty oil, can cause premature engine wear and failure. Use a high-quality SAE 10W-30 weight oil of API (American Petroleum Institute) service class SF, SG, SH.
UNDERSTANDING PROPANE SAFETY WARNINGS FOR PROPANE UNITS NOTE: FIRE/EXPLOSION HAZARD NOTE: Use propane only in containers specifically designed and approved for this unit. Propane is a combustible gas; it is colorless and thus invisible to the naked eye. Propane has a harmless odorant added so that it is possible to smell it. The propane odorant makes the propane smell like sulfer or rotten eggs. If at any time the smell of propane is identified, turn off the engine.
INSTALLING THE PROPANE CANISTER WARNING: Propane is highly flamable, and its vapors can explode if ignited. Take the following precautions. Propane Connector USE THE CORRECT PROPANE CANISTER Always use Propane canisters or “Bottles” that are the correct size. The 17 ounce or 16.4 ounce canisters that are approximately 3-7/8 inch in diameter are the cor rect canisters (Fig.8).
INSTALLING ATTACHMENTS AVAILABLE CUTTING ATTACHMENTS EDGING POSITION Brushcutter attachment..................................................358.79244 Edger attachment..............................................................358.79240 Cultivator attachment......................................................358.79241 Blower attachment............................................................358.79242 Pruner attachment.............................................................358.
STARTING / STOPPING STARTING INSTRUCTIONS Start/On(I) 1. Check the oil level in the crankcase. Refer to Checking the Oil Level ( p.12). Stop/Off Fast Idle Lock 2. Turn switch to ON position (Fig.14). Safety trigger NOTE: If your unit is equipped with a spring loaded type ON/OFF switch, it will always remain in the ON position. 3. Place trimmer firmly on the ground or a very sturdy work surface. Make sure cutting head is clear of all objects.
OPERATION OPERATING YOUR TRIMMER • Trim only when grass and weeds are dry. Before operating the unit, stand in the operating position (Fig. 15). Check for the following: • The life of your cutting line is dependent upon: • The operator is wearing eye protection and proper clothing. 2. What vegetation is cut 1. Proper adherence to explained trimming techniques 3. Where vegetation is cut • With a slightly bent right arm, the operator’s right hand is holding the shaft grip.
MAINTENANCE FREQUENCY MAINTENANCE REQUIRED REFER TO BEFORE STARTING ENGINE CHECK OIL PAGE 6 EVERY 10 HOURS CLEAN AND RE-OIL AIR FILTER PAGE 13 FIRST CHANGE AT 10 HOURS CHECK OIL PAGE 13 EVERY 25 HOURS THEREAFTER CHECK OIL PAGE 13 EVERY 25 HOURS CHECK SPARK PLUG POSITION GAP PAGE 14 EVERY 25 HOURS ROCKER ARM CLEARANCE ADJUSTMENT PAGE 16 CHECKING THE OIL LEVEL Perform these required maintenance procedures at the frequency stated in the table.
MAINTENANCE CHANGING THE OIL CLEANING THE AIR FILTER For a new engine, change the oil after the first 10 hours of operation. Change the oil while the engine is still warm but not hot. The oil will flow freely and carry away more impurities. Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain your air filter properly can result in poor performance or can cause permanent damage to your engine. 1.
MAINTENANCE CARBURETOR ADJUSTMENT The idle speed of the engine is adjustable. An idle adjustment screw is on the rear side of the carburetor (Fig. 21). Idle Adjustment Screw NOTE: Careless adjustments can seriously damage your unit. Only a Sears or other qualified dealer should make carburetor adjustments. CLEAN AIR FILTER The condition of the air filter is important to the operation of the unit. A dirty or oil saturated air filter will restrict air flow.
MAINTENANCE 3. Pull the ends of the line until the line bend is centered between the two insertion holes and firmly against the side of the cutting head (Fig. 25). LINE REPLACEMENT For Hassle-Free™ Cutting Head Always use Craftsman Hassle Free XTRA QUIET Spiral Line. Choose the line size best suited for the job at hand. Red colored line is designed for cutting grass and small weeds. Black colored line is designed for cutting larger weeds and light brush.
MAINTENANCE 8. Pull the starter rope slowly to bring the piston to the top of its travel, (this position is known as top dead center).Check that the piston is at the top of its travel by looking down into the spark plug hole. Both valves should be closed and the rocker arms should move freely. If this statement is not true, repeat this step until top dead center is acheived before proceeding to the next step. ROCKER ARM CLEARANCE ADJUSTMENT 1.
CLEANING AND STORAGE CLEANING LONG TERM STORAGE Use a small brush to clean the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and sol vents such as kerosene, can damage plastic housing or handle. Wipe off any moisture with soft cloth. 1. Remove propane canister. STORAGE NOTE: Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage. 2. Allow the engine to cool.
SPECIFICATIONS ENGINE* ENGINE TYPE AIR-COOLED 4-CYCLE DISPLACEMENT 25.4 CC CLUTCH TYPE CENTRIFUGAL OPERATING R.P.M. 6,800-9,300 R.P.M. IDLE SPEED 3,000-3,400 R.P.M. IGNITION TYPE ELECTRONIC IGNITION SWITCH PUSH ON/ OFF SWITCH VALVE CLEARANCE 0.003-0.006 INCHES (0.076-0.152 mm) SPARK PLUG GAP 0.02 INCHES (0.5 mm) LUBRICATION SAE 10W-30 OIL CRANKCASE OIL CAPACITY 2.5 FLUID OZ. (75 mL) FUEL PROPANE 16 OZ.
WARRANTY STATEMENT CRAFTSMAN FULL WARRANTY If this Craftsman product fails due to a defect in material or workmanship within two years from the date of purchase, return it to any Sears store, Parts and Repair Service Center, or other Craftsman outlet in the United States for free repair (or replacement if repair prove s impossible). This warranty applies for only 90 days if this product is ever used for commercial or rental purposes. This warranty covers ONLY defects in materal and workmanship.
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