OPERATOR’S MANUAL PROPANE POWERED LINE TRIMMER ECO-TRIMMER 16.4 oz Propane Bottle Not Included MODELS: ST 025SS ST 025DC ST 025CS ST 025DS TABLE OF CONTENTS Service and Safety............................................................. Safe Operation Rules .......................................................... Understanding Your Trimmer ............................................... Assembly........................................................................... Oil Information.................
S SERVICE AND SAFETY LEHR ECO-TRIMMER 4-CYCLE PROPANE TRIMMER For service call 1-866-941-LEHR in the United States, to obtain a list of authorized service dealers near you. For more details about your unit, visit our website at: www.golehr.com. DO NOT RETURN THE UNIT TO THE RETAILER. PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE. THIS PRODUCT IS COVERED BY ONE OR MORE U.S. PATENTS.
t . s SAFE OPERATION RULES DURING OPERATION • Never start or run the unit inside a closed room or build ing. Breathing exhaust fumes can be fatal. Operate this unit only in a well ventilated outdoor area. • 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. • Wear heavy long pants, boots, gloves and a long sleeve shirt.
UNDERSTANDING YOUR TRIMMER 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. WARNING: Indicates danger, warning or caution. May be used in conjunction with other symbols or pictographs. WARNING: READ OPERATOR’S MANUAL: Read the operator’s manual(s) and follow all warnings and safety instructions.
ASSEMBLY INSTALLING CUTTING ATTACHMENT SHIELD INSTALLING THE D-HANDLE AND LOWER HANDLE Use the following instructions if the cutting attachment shield on your unit is not installed. Use only the instructions that apply to the type of shaft and shield that your unit is equipped with. STRAIGHT SHAFT AND ACCESSORY READY TRIMMERS 1.Locate the 4 screws included in the tool kit. FOR CURVED SHAFT TRIMMERS Place the cutting attachment shield and spacer against tube as shown in (Fig. 1).
OIL INFORMATION RECOMMENDED OIL TYPE 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. 2. Place the unit on a level surface (fig.6). ADDING OIL TO THE CRANKCASE INITIAL USE NOTE: This unit is shipped without oil.
UNDERSTANDING PROPANE SAFETY WARNINGS FOR PROPANE UNITS 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 user should be familiar with the smell of propane (smells like sulfur or rotten eggs). If at any time the smell of propane is identified, turn off the engine.
INSTALLING THE PROPANE CANISTER USE THE CORRECT PROPANE CANISTER Always use Propane canisters or “Bottles” that are the correct size. The 17 ounce or 16.4 ounce/465 g can isters that are approximately 3-7/8 inches (9.5 cm) in diameter are the correct canisters (Fig. 8). Do not use the smaller diameter canisters as they will not latch securely to the unit and vibration may cause damage to the trimmer and potentially result in a dangerous leak. Propane Connector Fig. 9B 16.
INSTALLING ATTACHMENTS INSTALLING CUTTING ATTACHMENTS OR ADD-ONS NOTE: Place the unit on the ground or on a work bench to make accessory installation or removal easier. 1. Turn knob counterclockwise to loosen (Fig. 10). 2. While firmly holding the attachment, push it straight into coupler (Fig. 10). NOTE: Aligning the release button with receiving hole will help installation (Fig. 10). Receiving Hole REMOVING CUTTING ATTACHMENTS OR ADD-ONS 1. Turn the knob counterclockwise to loosen (Fig. 12). 2.
STARTING/STOPPING STARTING INSTRUCTIONS 1. Check the oil level in the crankcase. Refer to Checking the Oil Level ( p. 12). 2. Turn switch to ON position (Fig. 13). 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. Make sure all bystanders are a minimum of 50 feet (15 m) away.
OPERATION OPERATING YOUR TRIMMER Before operating the unit, stand in the operating posi tion (Fig. 15). Check for the following: • The operator is wearing eye protection and proper clothing. • With a slightly-bent right arm, the operator’s right hand is holding the shaft grip. • The operator’s left arm is straight, the left hand hold ing the handle. For example, the line will wear faster when trimming against a foundation wall as opposed to trimming around a tree.
MAINTENANCE FREQUENCY REFER TO BEFORE STARTING ENGINE MAINTENANCE REQUIRED CHECK OIL EVERY 10 HOURS CLEAN AND RE-OIL AIR FILTER PAGE 13 FIRST CHANGE AT 10 HOURS CHANGE OIL PAGE 13 EVERY 25 HOURS THEREAFTER E VERY 25 HOURS EVERY 25 HOURS CHANGE OIL PAGE 13 CHECK SPARK PLUG POSITION AND GAP R OCKER ARM CLEARANCE ADJ USTMENT PAGE 14 Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.
MAINTENANCE CHANGING THE OIL 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. 1. Unplug spark plug boot to prevent accidental starting. 2. Remove the oil fill plug/dipstick. 3. Pour the oil out of the oil fill hole and into a container by tipping the unit to its side (Fig. 19). Allow ample time for complete drainage.
MAINTENANCE CARURETOR ADJUSTMENT The idle speed of the engine is adjustable. An idle adjust ment screw is on the rear side of the carburetor (Fig. 22). NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments. CLEAN AIR FILTER The condition of the air filter is important to the op eration of the unit. A dirty or oil saturated air filter will restrict air flow. This is often mistaken for an out of ad justment carburetor.
MAINTENANCE TRIMMER HEAD LINE INSTALLATION SMALL BUMP FEED HEAD (.080” Line) 1. Review figure 28 for names of parts referred to in these instructions. 2. Lock shaft by inserting allen key into hole in collar and turn until it engages groove inside. When shaft can no longer rotate, loosen head by turning it as shown (Fig. 24). 8. Continue winding cord in direction indicated as shown, leave about 6 inches free length (15-20 cm) to pull wire through holes in body.
MAINTENANCE 6. Snap the free length of lines into top grooves in reel and pull through holes on trimmer head body (Fig. 34 and Fig. 35). TRIMMER HEAD LINE INSTALLATION LARGE BUMP FEED HEAD (.095” Line) 1. Lock shaft by inserting allen key into groove. Loosen by turning head as shown for straight shaft. If your model is a curved shaft, loosen by turning opposite the direction shown in (Fig. 31). Trimmer Head Body Spring Holes 2. Depress tab and twist trimmer head body CW to disassemble (Fig. 32).
ll MAINTENANCE BRUSH CUTTER BLADE REMOVAL / INSTALLATION 1.Remove the cotter pin (Fig. 38). GUARD CHANGE NOTE: When using the brush cutter blade remove the bottom shield attachment by removing the screw. Replace when using line trimmer head (Fig. 41). Screw Left-Hand Thread Nut Cotter Pin Cutting Attachment Sheild Loosen Bottom Shield Attachment Fig. 38 2. Insert an allen key into the hole in the shroud to lock the shaft.
MAINTENANCE ROCKER ARM CLEARANCE ADJUSTMENT 5. Clean dirt from around the rocker arm cover. 6. Remove the three screws holding the rocker arm cover with a phillips head screwdriver. 7. Remove the rocker arm cover and gasket (Fig. 43). Rocker Arm Cover Screws Fig.43 IF THE CLEARANCE IS NOT WITHIN SPECIFICATION 1. Loosen the jam nut and turn the adjusting screw as necessary. To increase the clearance, turn the adjusting screw CCW. To decrease the clearance, turn the adjusting screw CW. 2.
CLEANING AND STORAGE CLEANING 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. STORAGE • Remove propane canister. • Never store the unit with attached propane canister where fumes may reach an open flame or spark. • Allow the engine to cool before storing.
SPECIFICATIONS ENGINE* ENGINE TYPE DISPLACEMENT CLUTCH TYPE AIR COOLED 4-CYCLE 25.4 CC CENTRIFUGAL OPERATING R.P.M. 6,800-9300 R.P.M. IDLE SPEED 3,000-3,400 R.P.M. IGNITION TYPE IGNITION SWITCH VALVE CLEARANCE SPARK PLUG GAP LUBRICATION CRANKCASE OIL CAPACITY ELECTRONIC PUSH ON/OFF SWITCH 0.076-0.152MM (0.003-0.006 IN) 0.020 INCH (0.5 MM) SAE 10W-30 OIL 1.7 FLUID OZ. (50mL) FUEL PROPANE 16.
MANUFACTURER’S LIMITED WARRANTY The limited warranty set forth below is given by LEHR with respect to new merchandise purchased and used in the United States and Canada, its possessions and territories. LEHR warrants to the original purchaser that each new LEHR brand power tool or attachment is free from defects in material and workmanship and agrees to repair or replace under this warranty any defective power product or attachment as follows from the original date of purchase.
NOTES 22 LEHR | ALL RIGHT RESERVED 2008-2009
