MTD LT31S User's Manual
Contents
1. Baffled with Guard Throttle Manual Spring Return Fuel Tank Capacity 444 ml 15 oz Drive Shaft Housing Steel Tube Throttle Control Finger Tip Trigger Unit Weight No fuel with cutting attachment shield and D handle 11 lbs 5 kg Cutting Mechanism Bump Head Shoulder Strap Optional Line Spool Diameter 76 2 mm 3 in Trimming Line2. 8 000 rpm Idle Speed RPM 3 200 4 400 rpm Ignition Type Electronic Ignition Switch Rocker Switch Spark Plug Gap 0 5 mm 0 020 in Lubrication Fuel Oil Mixture Fuel Oil Ratio 40 1 Carburetor Diaphragm All Position Starter Auto Rewind with AST Muffler
3. HOLDING THE TRIMMER Before operating the unit stand in the operating position Fig 9 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 holding the D handle The unit is at waist level The cutting attachment is parallel to the ground and easily contacts the grass without the need to bend over ADJUSTING TRIMMING LINE LENGTH The Bump Head cutting attachment allows you to release trimming line without stopping the engine To release more line lightly tap the cutting attachment on the ground Fig 10 while operating the trimmer at high speed NOTE Always keep the trimming line fully extended Line release becomes more difficult as cutting line becomes shorter Fig 10 Each time the head is bumped about 25 4 mm 1 inch of trimming line releases A blade in the cutting attachment shield will cut the line to the proper length if any excess line is released For best results tap the bump knob on bare ground or hard soil If you attempt a line release in tall grass the engine may stall Always keep the trimming line fully extended Line release becomes more difficult when the cutting line gets shorter DECORATIVE TRIMMING Decorative trimming is accomplished by removing all vegetation around trees posts fences etc Rotate the whole unit s
4. Bolt Fig 12 Inner Reel Spring Outer Spool Indexing Teeth Fig 14 Fig 13 Never use metal reinforced line wire chain or rope These can break off and become dangerous projectiles WARNING To prevent serious injury never perform maintenance or repairs with unit running Always service and repair a cool unit Disconnect the spark plug wire to ensure that the unit cannot start WARNING 12 MAINTENANCE AND REPAIR INSTRUCTIONS Fig 19 Fig 15 NOTE SplitLine can only be used with the inner reel with the slotted holes Single line can be used on either type of inner reel Use Figure 15 to identify the inner reel you have NOTE Always use the correct line length when installing trimming line on the unit The line may not release properly if the line is too long Single Line Installation Go To Step 8 for SplitLine Installation 6 Take approximately 6 m 20 feet of new trimming line loop it into two equal lengths Insert each end of the line through one of the two holes in the inner reel Fig 16 Pull the line through the inner reel so that the loop is as small as possible 7 Wind the lines in tight even layers onto the reel Fig 17 Wind the line in the direction indicated on the inner reel Place your index finger between the two lines to stop the lines from overlapping Do not overlap the ends of the line Proceed to step 11 SplitLine Installation 8 Take approximately 3 m 1
5. a feeler gauge Fig 28 4 Install a correctly gapped spark plug in the cylinder head Tighten by turning the 5 8 inch socket clockwise until snug If using a torque wrench torque to 12 3 13 5 N m 110 120 in lb Do not over tighten 0 5 mm 0 020 in Fig 28 Idle Speed Screw Fig 27 The cutting attachment will spin during idle speed adjustments Wear protective clothing and observe all safety instructions to prevent serious personal injury WARNING To prevent serious personal injury make sure the cutting attachment has stopped rotating after you turn it off and before you set it down WARNING Do not sand blast scrape or clean electrodes Grit in the engine could damage the cylinder WARNING 16 MAINTENANCE AND REPAIR INSTRUCTIONS CLEANING Use a small brush to clean off the outside of the unit Do not use strong detergents Household cleaners that contain aromatic oils such as pine and lemon and solvents such as kerosene can damage plastic housing or handle Wipe off any moisture with a soft cloth STORAGE Never store a fueled unit where fumes may reach an open flame or spark Allow the engine to cool before storing Store the unit locked up to prevent unauthorized use or damage Store the unit in a dry well ventilated area Store the unit out of the reach of children LONG TERM STORAGE If you plan on storing the unit for an extended time use the fol
6. of the muffler Make sure that the spark arrestor screen fits flat against the muffler 6 Place the spark arrestor plate on top of the spark arrestor with the raised side up and the opening facing towards the engine Fig 26 7 Place the spark arrestor hood on top of the spark arrestor plate with the raised side up and the opening facing AWAY from the engine Fig 26 Verify that the exhaust will be directed AWAY from the engine 8 Replace the two screws you removed in Step 2 and tighten them securely 9 Reinstall the air filter muffler cover If the exhaust deflector assembly is not tightened securely it could fall off causing damage to the unit and possible serious personal injury WARNING Spark Arrestor Screen Spark Arrestor Plate Spark Arrestor Hood Screws Muffler Recessed Hole Engine Spark Arrestor Hood Assembly Includes Spark Arrestor Plate Spark Arrestor Hood and Screws Opening Fig 26 15 MAINTENANCE AND REPAIR INSTRUCTIONS Clean Air Filter The condition of the air filter is important to the operation of the unit A dirty air filter will restrict air flow and change the air fuel mixture This is often mistaken for an out of adjustment carburetor Check the condition of the air filter before adjusting the idle speed screw Refer to Air Filter Maintenance Adjust Idle Speed Screw If after checking the fuel mixture and cleaning the air filter the engine still
7. will not idle adjust the idle speed screw as follows 1 Start the engine and let it run at a high idle for a minute to warm up Refer to Starting Stopping Instructions 2 Release the throttle trigger and let the engine idle If the engine stops insert a small phillips screwdriver into the hole in the air filter muffler cover Fig 27 Turn the idle speed screw in clockwise 1 8 of a turn at a time as needed until the engine idles smoothly 3 If the engine appears to be idling too fast turn the idle speed screw counterclockwise 1 8 of a turn at a time as needed to reduce idle speed Checking the fuel mixture cleaning the air filter and adjusting the idle speed should solve most engine problems If not and all of the following are true the engine will not idle the engine hesitates or stalls on acceleration there is a loss of engine power Have the carburetor adjusted by an authorized service dealer REPLACING THE SPARK PLUG Use a Champion RDJ7Y spark plug or equivalent The correct air gap is 0 5 mm 0 020 inch Remove the plug after every 25 hours of operation and check its condition 1 Stop the engine and allow it to cool Grasp the plug wire firmly and pull it from the spark plug 2 Clean around the spark plug Remove the spark plug from the cylinder head by turning a 5 8 inch socket counterclockwise 3 Replace a cracked fouled or dirty spark plug Set the air gap at 0 5 mm 0 020 inch using
8. 0 feet of new trimming line Insert one end of the line through one of the two holes in the inner reel Fig 18 Pull the line through the inner reel until only about 4 inches is left out 9 Insert the end of the line into the open hole in the inner reel and pull the line tight to make the loop as small as possible Fig 18 10 Before winding split the line back about 6 inches 11 Wind the line in tight even layers in the direction indicated on the inner reel NOTE Failure to wind the line in the direction indicated will cause the cutting attachment to operate incorrectly Slotted Holes For Use with SplitLine or Single Line For Use with Single Line ONLY Holding Slots NOTE The spring must be assembled on the inner reel before reassembling the cutting attachment 14 Hold the inner reel in place and install the bump knob by turning clockwise Tighten securely 12 Insert the ends of the line into the two holding slots Fig 19 13 Insert the ends of the line through the eyelets in the outer spool and place inner reel with spring inside the outer spool Fig 20 Push the inner reel and outer spool together While holding the inner reel and outer spool grasp the ends and pull firmly to release the line from the holding slots in the reel Loop Fig 16 Fig 17 Loop Fig 18 Spring Fig 20 13 MAINTENANCE AND REPAIR INSTRUCTIONS AIR FILTER MAINTENANCE Removing the Air Filter Muffler C
9. Diameter 2 03 mm 0 080 in Cutting Path Diameter 43 18 cm 17 in Maximum Vibration Level Idle 9 56 m s2 Maximum Vibration Level Racing 9 95 m s2 Maximum Sound Pressure Level Idle 86 0 LpeqdB A Maximum Sound Pressure Level Racing 101 0 LpeqdB A Method for obtaining level per ISO 7916 Method for obtaining level per ISO 7917 19 NOTES 20 NOTES
10. Operator s Manual LT31S 2 Cycle Petrol Trimmer IMPORTANT READ SAFETY RULES AND INSTRUCTIONS CAREFULLY P N 769 01661 2 05 2 INTRODUCTION TABLE OF CONTENTS Service Information 2 Rules for Safe Operation 3 Know Your Unit 6 Assembly Instructions 7 Oil and Petrol Information 8 Starting Stopping Instructions 9 Operating Instructions 10 Maintenance and Repair Instructions 11 Troubleshooting Chart 17 Specifications 18 Copy the serial number here THANK YOU Thank you for buying this quality product This modern outdoor power tool will provide many hours of useful service You will find it to be a great labor saving device This operator s manual provides you with easy to understand operating instructions Read the whole manual and follow all the instructions to keep your new outdoor power tool in top operating condition PRODUCT REFERENCES ILLUSTRATIONS AND SPECIFICATIONS All information illustrations and specifications in this manual are based on the latest product information availabl
11. STANDERS AWAY WARNING Keep all bystanders especially children and pets at least 50 feet 15 m from the operating area UNLEADED FUEL Always use clean fresh unleaded fuel SYMBOL MEANING THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY WARNING Do not operate without the cutting attachment shield in place Keep away from the rotating cutting attachment ON OFF STOP CONTROL ON START RUN ON OFF STOP CONTROL OFF or STOP HOT SURFACE WARNING Do not touch a hot muffler or cylinder You may get burned These parts get extremely hot from operation When turned off they remain hot for a short time CHOKE CONTROL 1 FULL choke position 2 PARTIAL choke position 3 RUN position OIL Refer to operator s manual for the proper type of oil 1 2 3 6 KNOW YOUR UNIT APPLICATIONS As a trimmer Cutting grass and light weeds Edging Decorative trimming around trees fences etc KNOW YOUR UNIT Fuel Cap Throttle Control D Handle Shaft Grip Primer Bulb Blue Choke Lever Air Filter Muffler Cover Shaft Tube Starter Rope Grip Line Cutting Blade Muffler On Off Stop Control Cutting Attachment Cutting Attachment Shield 7 ASSEMBLY INSTRUCTIONS Fig 2 INSTALL AND ADJUST THE D HANDLE 1 Push the D handle down onto the shaft housing so that the handle slants towards the shaft grip Fig 1 T
12. alled and securely fastened Be sure that the cutting attachment shield is properly attached and positioned as recommended Failure to do so can result in personal injury to the operator and bystanders as well as damage to the unit Use only 2 03 mm 0 080 inch diameter original equipment manufacturer replacement line Never use metal reinforced line wire chain or rope These can break off and become dangerous projectiles Be aware of risk of injury to the head hands and feet Clear the area to be cut before each use Remove rocks broken glass nails wire string and other objects which may be thrown or become entangled in the cutting attachment Clear the area of children bystanders and pets keep them outside a 15 m 50 foot radius at a minimum Even then they are still at risk from thrown objects Encourage bystanders to wear eye protection If you are approached stop the unit immediately Squeeze the throttle control and check that it returns automatically to the idle position Make all adjustments or repairs before using the unit This unit was not designed to be used as a brushcutter Do not attach or operate this unit with any type of brushcutting blade or brushcutting attachment SAFETY WARNINGS FOR PETROL TRIMMERS Store fuel only in containers specifically designed and approved for the storage of such materials Always stop the engine and allow it to cool before filling the fuel t
13. ank Never remove the fuel tank cap or add fuel when the engine is hot Never operate the unit without the fuel cap securely in place Loosen the fuel tank cap slowly to relieve any pressure in the tank When using the unit you must follow the safety rules Please read these instructions before operating the unit in order to ensure the safety of the operator and any bystanders Please keep these instructions for later use WARNING IMPORTANT SAFETY INSTRUCTIONS Petrol is highly flammable and its vapors can explode if ignited Take the following precautions WARNING 4 RULES FOR SAFE OPERATION Add fuel in a clean well ventilated outdoor area where there are no sparks or flames Remove the fuel cap slowly and only after the engine stops Do not smoke while fueling or mixing fuel Wipe up any spilled fuel from the unit immediately Avoid creating a source of ignition for spilled fuel Do not start the engine until fuel vapors dissipate Move the unit at least 9 1 m 30 feet from the fueling source and site before starting the engine Do not smoke Keep sparks and open flames away from the area while adding fuel or operating the unit WHILE OPERATING 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 Wear safety glasses or goggles that meet ANSI Z87 1 standards and are marked as such W
14. e at the time of printing We reserve the right to make changes at any time without notice Copyright 2005 MTD SOUTHWEST INC All Rights Reserved SERVICE INFORMATION Service on this unit both within and after the warranty period should be performed only by an authorized and approved service dealer DO NOT RETURN THE UNIT TO THE RETAILER PROOF OF PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE Before beginning locate the unit s model plate It lists the model and serial numbers of your unit Refer to the sample plate below and copy the information for future reference S N ITEM MODEL Make sure you carefully read and understand this manual before starting or operating this equipment THIS PRODUCT IS COVERED BY ONE OR MORE U S PATENTS OTHER PATENTS PENDING Copy the model and parent part number here 3 RULES FOR SAFE OPERATION SYMBOL MEANING The purpose of safety symbols is to attract your attention to possible dangers The safety symbols and their explanations deserve your careful attention and understanding The safety warnings do not by themselves eliminate any danger The instructions or warnings they give are not substitutes for proper accident prevention measures NOTE Advises you of information or instructions vital to the operation or maintenance of the equipment SYMBOL MEANING Failure to obey a safety warning can result in injury to yourself and others Always follow the safety precauti
15. ear 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 Do not wear loose clothing jewelry short pants sandals or go barefoot Secure hair above shoulder level The cutting attachment shield must always be in place while operating the unit Do not operate unit without both trimming lines extended and the proper line installed Do not extend the trimming line beyond the length of the shield This unit does not have a clutch The cutting attachment continues rotating when the engine is idling If it does not have the unit adjusted by an authorized service technician Adjust the D handle to your size in order to provide the best grip Be sure the cutting attachment is not in contact with anything before starting the unit Use the unit only in daylight or good artificial light Avoid accidental starting Be in the starting position whenever pulling the starter rope The operator and unit must be in a stable position while starting Refer to Starting Stopping Instructions Use the right tool Only use this tool for its intended purpose Do not overreach Always keep proper footing and balance Always hold the unit with both hands when operating Keep a firm grip on both handles or grips Keep hands face and feet at a distance from all moving parts Do not touch or try to s
16. el cap slowly to avoid injury from fuel spray Never operate the unit without the fuel cap securely in place WARNING For proper engine operation and maximum reliability pay strict attention to the oil and petrol mixing instructions on the 2 cycle oil container Using improperly mixed fuel can severely damage the engine CAUTION 9 STARTING STOPPING INSTRUCTIONS Fig 6 Starting Position Start On I Stop Off O Starter Rope Throttle Control Fig 8 Fig 7 Blue Choke Lever Position 1 Position 3 Position 2 Primer Bulb Operate this unit only in a well ventilated outdoor area Carbon monoxide exhaust fumes can be lethal in a confined area WARNING Avoid accidental starting Make sure you are in the starting position when pulling the starter rope Fig 8 To avoid serious injury the operator and unit must be in a stable position while starting WARNING STARTING INSTRUCTIONS STOPPING INSTRUCTIONS 1 Release your hand from the throttle control Allow the engine to cool down by idling 2 Put the On Off Stop Control in the OFF O position 1 Mix petrol with oil Fill fuel tank with fuel oil mixture See Oil and Fuel Mixing Instructions 2 Make sure the On Off Stop Control in the ON I position Fig 6 3 Fully press and release the primer bulb 10 times slowly Some amount of fuel should be visible in the primer bulb and fuel lines Fig 7 If you can t see fuel in t
17. engine 1 Remove air filter muffler cover Refer to Removing the Air Filter Muffler Cover 2 Turn cover over and look inside to locate the air filter Remove the air filter from inside the air filter muffler cover Fig 22 3 Wash the filter in detergent and water Fig 23 Rinse the filter thoroughly Squeeze out excess water Allow it to dry completely 4 Apply enough clean SAE 30 oil to lightly coat the filter Fig 24 5 Squeeze the filter to spread and remove excess oil Fig 25 Fig 23 Fig 24 Fig 25 6 Replace the air filter inside the air filter muffler cover Fig 22 NOTE Operating the unit without the air filter and air filter muffler cover assembly will VOID the warranty Reinstalling the Air Filter Muffler Cover 1 Place the air filter muffler cover over the back of the carburetor and muffler Align the screw holes 2 Insert the four 4 screws into the holes in the air filter muffler cover Fig 21 and tighten Do not over tighten Air Filter Inside Muffler Cover Blue Choke Lever Screws Screws Position 2 Fig 21 To avoid serious personal injury always turn your unit off and allow it to cool before you clean or service it WARNING Fig 22 14 MAINTENANCE AND REPAIR INSTRUCTIONS CARBURETOR ADJUSTMENT The idle speed of the engine is adjustable through the air filter muffler cover Fig 27 NOTE Careless adjustments can seriously damage your unit An authori
18. he bulb press and release the bulb as many times as it takes before you can see fuel in it 4 Place the blue choke lever in Position 1 Fig 7 5 Crouch in the starting position Fig 8 and squeeze the throttle control Pull the starter rope out with a controlled and steady motion 5 times NOTE The unit uses Advanced Starting Technology which significantly reduces the effort required to start the engine You must pull the starter rope out far enough to hear the engine attempt to start There is no need to pull the rope briskly there is no harsh resistance when pulling Be aware that this starting method is vastly different from and much easier than what you may be used to 6 Place the blue choke lever in Position 2 7 While squeezing the throttle control pull the starter rope out with a controlled and steady motion until the engine starts 8 Keep the throttle squeezed and allow the engine to warm up for 15 to 30 seconds 9 Place the blue choke lever in Position 3 The unit is ready for use IF The engine does not start go back to step 3 IF The engine fails to start after a few attempts place the blue choke lever in Position 3 and squeeze the throttle control Pull the starter rope 3 to 8 times The engine should start If not repeat IF WARM If the engine is already warm make sure the On Off Stop control is in the ON position and start the unit with the blue choke lever in Position 2 After the unit star
19. he squared bolt hole in the handle is to the right 2 Insert the shoulder bolt into the squared hole in the handle and push through On the left side of the handle place the washer on the bolt then screw the wing nut onto the bolt Do not tighten until you make the handle adjustment 3 Rotate the D handle to place the grip above the top of the shaft housing Place it a minimum of 15 24 cm 6 inches from the end of the shaft grip 4 While holding the unit in the operating position Fig 2 position the D handle to the location that provides you the best grip 5 Tighten the wing nut until the D handle is secure Fig 1 Bolt Washer Wing Nut Tighten Shaft Grip D Handle Minimum 15 24 cm 6 inches Shaft Housing INSTALL THE CUTTING ATTACHMENT SHIELD Use the following instructions if the cutting attachment shield on your unit is not installed 1 Slide the cutting attachment shield into the shield mount on the cutting attachment Align the screw holes in the shield mount with the holes in the cutting attachment Fig 3 2 Place one of the three 3 supplied hex lock nuts into one of the three recessed holes on the top of the cutting attachment shield Fig 4 3 Install a screw into the hole from the bottom of the cutting attachment shield Screw it into the nut installed in Step 2 until started Fig 5 Do not tighten 4 Repeat Steps 2 and 3 until all three screws have been started Then tighte
20. ill with new line Inner reel bound up Replace the inner reel Cutting head dirty Clean inner reel and outer spool Line welded Disassemble remove the welded section and rewind Line twisted when refilled Disassemble and rewind the line Not enough line is exposed Push the bump knob and pull out line until 102 mm 4 inches of line is outside of the cutting attachment C A U S E A C T I O N Old or improperly mixed fuel Drain petrol tank and add fresh fuel mixture Improper carburetor adjustment Take to an authorized service dealer for an adjustment Fouled spark plug Replace or clean the spark plug Plugged spark arrestor Clean or replace spark arrestor C A U S E A C T I O N Empty fuel tank Fill fuel tank with properly mixed fuel Primer bulb wasn t pressed enough Press primer bulb fully and slowly 10 times Engine is flooded Squeeze the trigger and pull the starter rope Old or improperly mixed fuel Drain petrol tank and add fresh fuel mixture Fouled spark plug Replace or clean the spark plug Plugged spark arrestor Clean or replace spark arrestor On Off Control in OFF O position Move switch to ON I ENGINE WILL NOT START ENGINE WILL NOT IDLE ENGINE WILL NOT ACCELERATE ENGINE LACKS POWER OR STALLS WHEN CUTTING C A U S E A C T I O N Air filter is plugged Replace or clean the air filter Old or improperly mixed fuel Drain petrol tank and add fresh fuel mixture Improper carburetor adjustment Adjust according to
21. ing or transporting Be sure to secure the unit while transporting Store the unit in a dry area locked up or up high to prevent unauthorized use or damage out of the reach of children Never douse or squirt the unit with water or any other liquid Keep handles dry clean and free from debris Clean after each use see Cleaning and Storage instructions Keep these instructions Refer to them often and use them to instruct other users If you loan someone this unit also loan them these instructions SAVE THESE INSTRUCTIONS 5 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 RULES FOR SAFE OPERATION SYMBOL MEANING SAFETY ALERT SYMBOL 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 Failure to do so can result in serious injury to the operator and or bystanders WEAR EYE AND HEARING PROTECTION WARNING Thrown objects and loud noise can cause severe eye injury and hearing loss Wear eye protection meeting ANSI Z87 1 1989 standards and ear protection when operating this unit Use a full face shield when needed KEEP BY
22. l that came with your unit contains a fuel additive which will help inhibit corrosion and minimize the formation of gum deposits It is recommended that you use our 2 cycle oil with this unit If unavailable use a good 2 cycle oil designed for air cooled engines along with a fuel additive such as STA BIL Petrol Stabilizer or an equivalent Add 23 ml 0 8 oz of fuel additive per gallon of fuel according to the instructions on the container NEVER add fuel additives directly to the unit s fuel tank Thoroughly mix the proper ratio of 2 cycle engine oil with unleaded petrol in a separate fuel can Use a 40 1 petrol oil ratio Do not mix them directly in the engine fuel tank See the table below for specific petrol and oil mixing ratios NOTE 3 8 liters 1 gallon of unleaded petrol mixed with one 95 ml 3 2 oz bottle of 2 cycle oil makes a 40 1 petrol oil ratio UNLEADED PETROL 2 CYCLE OIL 3 8 LITERS 1 GALLON US 95 ml 3 2 FL OZ 1 LITER 25 ml MIXING RATIO 40 1 Add fuel in a clean well ventilated outdoor area Wipe up any spilled fuel immediately Avoid creating a source of ignition for spilt fuel Do not start the engine until fuel vapors dissipate WARNING Petrol is extremely flammable Ignited Vapors may explode Always stop the engine and allow it to cool before filling the fuel tank Do not smoke while filling the tank Keep sparks and open flames at a distance from the area WARNING Remove fu
23. lf as engine damage may result from contaminants involved in the cleaning process for the port FREQUENCY MAINTENANCE REQUIRED REFER TO Before starting engine Fill fuel tank with fresh fuel Page 8 Every 10 hours Clean and re oil air filter Page 13 Every 25 hours Check and clean spark arrestor Check spark plug condition and gap Page 14 Page 15 Every 50 hours Inspect spark arrestor screen for clogging or obstruction to assure maximum performance levels Page 14 LINE INSTALLATION This section covers both SplitLine and standard single line installation Always use original equipment manufacturer 2 03 mm 0 080 in replacement line Line other than the specified may make the engine overheat or fail There are two methods to replace the trimming line Wind the inner reel with new line Install a prewound inner reel Winding the Existing Inner Reel 1 Hold the outer spool with one hand and unscrew the Bump Knob counterclockwise Fig 12 Inspect the bolt inside the Bump Knob to make sure it moves freely Replace the Bump Knob if damaged 2 Remove the inner reel from the outer spool Fig 13 3 Remove spring from the inner reel Fig 13 4 Use a clean cloth to clean the the inner reel spring shaft and inner surface of the outer spool 5 Check the indexing teeth on the inner reel and outer spool for wear Fig 14 If necessary remove burrs or replace the reel and spool Bump Knob
24. lowing storage procedure 1 Drain all fuel from the fuel tank into a container with the same 2 cycle fuel mixture Do not use fuel that has been stored for more than 60 days Dispose of the old fuel oil mix in accordance to Federal State and Local regulations TRANSPORTING Allow the engine to cool before transporting Drain fuel from unit Tighten fuel cap before transporting Secure the unit while transporting To avoid serious personal injury always turn your trimmer off and allow it to cool before you clean or service it WARNING 2 Start the engine and allow it to run until it stalls This ensures that all fuel has been drained from the carburetor 3 Allow the engine to cool Remove the spark plug and put 30 ml 1 oz of any high quality motor oil or 2 cycle oil into the cylinder Pull the starter rope slowly to distribute the oil Reinstall the spark plug NOTE Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage 4 Thoroughly clean the unit and inspect it for any loose or damaged parts Repair or replace damaged parts and tighten loose screws nuts or bolts The unit is ready for storage 17 TROUBLESHOOTING If further assistance is required contact your authorized service dealer C A U S E A C T I O N Cutting attachment bound with grass Stop the engine and clean cutting attachment Cutting attachment out of line Ref
25. n all screws securely with a Phillips head screwdriver Shaft Housing Recessed Holes Cutting Attachment Shaft Housing Shield Mount Cutting Attachment Shield Cutting Attachment 3 Screws Hex Lock Nut Fig 3 Fig 4 Fig 5 To prevent serious personal injury never operate the trimmer without the cutting attachment shield in place WARNING 8 OIL AND PETROL INFORMATION NOTE Dispose of the old petrol oil mix in accordance to Federal State and Local regulations OIL AND PETROL MIXING INSTRUCTIONS Old and or improperly mixed fuel are the main reasons for the unit not running properly Be sure to use fresh clean unleaded petrol Follow the instructions carefully for the proper petrol oil mixture Definition of Blended Petrols Today s petrols are often a blend of petrol and oxygenates such as ethanol methanol or MTBE ether Alcohol blended petrol absorbs water As little as 1 water in the petrol can make petrol and oil separate It forms acids when stored When using alcohol blended petrol use fresh petrol less than 60 days old Using Blended Petrols If you choose to use a blended petrol or its use is unavoidable follow recommended precautions Always use the fresh fuel mix explained in your operator s manual Always agitate the fuel mix before fueling the unit Drain the tank and run the engine dry before storing the unit Using Fuel Additives The bottle of 2 cycle oi
26. o that the cutting attachment is at a 30 angle to the ground Fig 11 Fig 11 Fig 9 Do not remove or alter the line cutting blade assembly Excessive line length will make the unit overheat This may lead to serious personal injury or damage to the unit CAUTION Always wear eye hearing foot and body protection to reduce the risk of injury when operating this unit WARNING 11 MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE SCHEDULE Perform these required maintenance procedures at the frequency stated in the table These procedures should also be a part of any seasonal tune up NOTE Some maintenance procedures may require special tools or skills If you are unsure about these procedures take your unit to any non road engine repair establishment individual or authorized service dealer NOTE Maintenance replacement or repair of the emission control devices and system may be performed by any non road engine repair establishment individual or authorized service dealer In order to assure peak performance of your engine inspection of the engine exhaust port may be necessary after 50 hours of operation If you notice lost RPM poor performance or general lack of acceleration this service may be required If you feel your engine is in need of this inspection refer service to any non road engine repair establishment individual or authorized service dealer for repair DO NOT attempt to perform this process yourse
27. ons to reduce the risk of fire electric shock and personal injury WARNING Failure to obey a safety warning will result in serious injury to yourself or to others Always follow the safety precautions to reduce the risk of fire electric shock and personal injury DANGER Failure to obey a safety warning may result in property damage or personal injury to yourself or to others Always follow the safety precautions to reduce the risk of fire electric shock and personal injury CAUTION Indicates danger warning or caution Attention is required in order to avoid serious personal injury May be used in conjunction with other symbols or pictographs SAFETY ALERT Read the Operator s Manual s and follow all warnings and safety instructions Failure to do so can result in serious injury to the operator and or bystanders READ ALL INSTRUCTIONS BEFORE OPERATING Read the instructions carefully Be familiar with the controls and proper use of the unit Do not operate this unit when tired ill or under the influence of alcohol drugs or medication Children under the age of 15 must not use the unit teens may operate the unit with adult guidance Inspect the unit before use Replace damaged parts Check for fuel leaks Make sure all fasteners are in place and secure Replace cutting attachment parts that are cracked chipped or damaged in any way Make sure the cutting attachment is properly inst
28. over 1 Place the blue choke lever in Position 2 Fig 21 NOTE The blue choke lever must be in Position 2 to remove the air filter muffler cover 2 Remove the four 4 screws securing the air filter muffler cover Fig 21 Use a T 20 Torx bit screwdriver 3 Pull the cover from the engine Do not force INSTALLING A PREWOUND REEL 1 Hold the outer spool with one hand and unscrew the bump knob counterclockwise Fig 12 Inspect the bolt inside the bump knob to make sure it moves freely Replace the bump knob if damaged 2 Remove the old inner reel from the outer spool Fig 13 3 Remove the spring from the old inner reel Fig 13 4 Place the spring in the new inner reel NOTE The spring must be assembled on the inner reel before reassembling the cutting attachment 5 Insert the ends of the line through the eyelets in the outer spool Fig 20 6 Place the new inner reel inside the outer spool Push the inner reel and outer spool together While holding the inner reel and outer spool grasp the ends and pull firmly to release the line from the holding slots in the spool 7 Hold the inner reel in place and install the bump knob by turning clockwise Tighten securely Cleaning the Air Filter 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
29. the Carburetor Adjustments section C A U S E A C T I O N Old or improperly mixed fuel Drain petrol tank and add fresh fuel mixture Improper carburetor adjustment Take to an authorized service dealer for an adjustment Cutting attachment bound with grass Stop the engine and clean the cutting attachment Dirty air filter Clean or replace the air filter Plugged spark arrestor Clean or replace spark arrestor CUTTING ATTACHMENT WILL NOT ADVANCE LINE C A U SE A C T I O N Oil cleaner or lubricant in cutting head Clean and thoroughly dry the cutting head CUTTING LINE ADVANCES UNCONTROLLABLY 18 SPECIFICATIONS ENGINE DRIVE SHAFT and CUTTING ATTACHMENT All specifications are based on the latest product information available at the time of printing We reserve the right to make changes at any time without notice Engine Type Air Cooled 2 Cycle Stroke 31 75 mm 1 25 in Displacement 31 cc 1 9 cu in Operating RPM
30. top the cutting attachment when it rotates Do not touch the engine gear housing or muffler These parts get extremely hot from operation even after the unit is turned off 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 Always stop the engine when cutting is delayed or when walking from one cutting location to another If you strike or become entangled with a foreign object stop the engine immediately and check for damage Do not operate before repairing damage Do not operate the unit with loose or damaged parts Stop the unit switch the engine to off and disconnect the spark plug for maintenance or repair Use only original equipment manufacturer replacement parts and accessories for this unit These are available from your authorized service dealer Use of any unauthorized parts or accessories could lead to serious injury to the user or damage to the unit and void your warranty Keep unit clean of vegetation and other materials They may become lodged between the cutting attachment and shield To reduce fire hazard replace a faulty muffler and spark arrestor Keep the engine and muffler free from grass leaves excessive grease or carbon build up OTHER SAFETY WARNINGS Never store a fueled unit inside a building where fumes may reach an open flame or spark Allow the engine to cool before stor
31. ts move the blue choke lever to Position 3 10 OPERATING INSTRUCTIONS NOTE Do not rest the Bump Head on the ground while the unit is running Some line breakage will occur from Entanglement with foreign matter Normal line fatigue Attempting to cut thick stalky weeds Forcing the line into objects such as walls or fence posts TIPS FOR BEST TRIMMING RESULTS Keep the cutting attachment parallel to the ground Do not force the cutting attachment Allow the tip of the line to do the cutting especially along walls Cutting with more than the tip will reduce cutting efficiency and may overload the engine Cut grass over 200 mm 8 inches by working from top to bottom in small increments to avoid premature line wear or engine drag Cut from right to left whenever possible Cutting to the left improves the unit s cutting efficiency Clippings are thrown away from the operator Slowly move the trimmer into and out of the cutting area at the desired height Move either in a forward backward or side to side motion Cutting shorter lengths produces the best results Trim only when grass and weeds are dry The life of your cutting line is dependent upon Adherence of the listed trimming techniques What vegetation is cut Where vegetation is cut For example the line will wear faster when trimming against a foundation wall as opposed to trimming around a tree
32. zed service dealer should make carburetor adjustments Check Fuel Mixture Old and or improperly mixed fuel is usually the reason for improper unit performance Drain and refill the tank with fresh properly mixed fuel prior to making any adjustments Refer to Oil and Fuel Information SPARK ARRESTOR MAINTENANCE NOTE The exhaust can only flow in one direction AWAY from the engine Pay close attention when disassembling the muffler so you can put it back together correctly Failure to do so will damage the unit and may cause serious personal injury 1 Remove air filter muffler cover Refer to Removing the Air Filter Muffler Cover 2 Locate the muffler but do not remove it Find the two 2 screws on the bottom of the muffler Fig 26 These two screws hold the Spark Arrestor Hood Assembly and the spark arrestor screen to the bottom of the muffler Remove the two 2 screws using either a torx 20 or flat blade screwdriver 3 Using a small flat blade screwdriver carefully pry up the spark arrestor screen from the recessed hole taking care to notice that the raised part of the spark arrestor screen is inside the recessed hole Remove the spark arrestor screen from the muffler 4 Clean the spark arrestor screen with a wire brush Replace it if it is damaged or if you are unable to clean it thoroughly 5 Reinstall the spark arrestor screen by putting the raised portion of the screen inside the recessed hole
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