Owner's Manual [CRAFTSMAN°[ 4.0 HORSEPOWER 20INCH CUT WHEELED WEEDTRIMMER Model No. 917.773410 • • • • • • Safety Assembly Operation Maintenance Espahol Repair Parts A_,KCAUTION: Read and follow all Safety Rules and Instructions before operating this equipment. Sears, Roebuck and Co., Hoffman Estates, IL 60179 Visit our Craftsman website: www.sears.com/craftsman Warranty Safety Rules Assembly Operation Maintenance Maintenance Schedule 2 2 5 6 9 9 Product Specifications Service and Adjustments Storage Troubleshooting Repair Parts Parts Ordering 1: 1, 1! 3[ Back Cove LIMITED TWO YEAR WARRANTY ON CRAFTSMAN WEEDTRIMMER For two years from date of purchase, when this Craftsman Weedtrimmer is maintained, lubricated, and tuned up according to the operating and maintenance instructions in the owner's manual, Sears will repair free of charge any defect in material or workmanship. If this Craftsman Weedtrimmer is used for commercial applies for only 90 days from the date of purchase. or rental purposes, this warranty This Warranty does not cover: • Expendable items which become worn during normal use, such as rotating lines, belts, air cleaners and spark plug. • Repairs necessary because of operator abuse or negligence, including bent crankshafts and the failure to maintain the equipment according to the instructions contained in the owner's manual. Warranty service is available by returning the Craftsman Weedtrimmer to the nearest Sears Service Center in the United States. This warranty applies only while this produc' is in use in the United States. This Warranty gives you specific vary from state to state. ,Sears, Roebuck legal rights, and you may also have other rights which and Co., Dept. 817 WA, Hoffman Estates, IL 60179 WARNING: This trimmer is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-covered or grasscovered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the state of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest authorized service center/department (See REPAIR PARTS section of this manual). 9 The operation of any trimmer can result in foreign objects thrown into the eyes, which can result in severe eye damage. Always wear safety glasses or eye shields while operating your trimmer or performing any adjustments or repairs. We recommend a wide vision safety mask over spectacles or standard safety glasses. The safety goggles provided with your trimmer may be worn over spectacles. I. GENERAL OPERATION • Do not operate the machine without proper guards, plates or other safety protective devices in place. • See manufacturer's instructions for proper operation and installation of accessories. Only use accessories approved by the manufacturer. • Never use blades, wire, or flailing devices. This unit is designed for line trimmer use only. Use of other accessories or attachments will increase the risk of injury. • Stop the rotating trimmer head when crossing gravel drives, walks, or roads. Wait for the cutting lines to stop rotating. • Stop the engine (motor) whenever you leave the equipment, before cleaning, repairing or inspecting the unit. Be sure the trimmer head and all moving parts have stopped. • Operate only in daylight or good artificial light. • Do not operate the machine while under the influence of alcohol or drugs. • Never operate machine in wet grass. Always be sure of your footing: keep a firm hold on the handle and walk; never run. • If the equipment should start to vibrate abnormally, stop the engine (motor) and check immediately for the cause. Vibration is generally a warning of trouble. • Always wear safety goggles or safety glasses with side shields when operating machine. • Read, understand, and follow all instructions on the machine and in the manual before starting. Be thoroughly familiar with the controls and the proper use of the machine before starting. • Do not put hands or feet near or under rotating parts. • Keep all parts of your body away from muffler and spinning line. A hot muffler can cause serious burns. • Only allow responsible individuals, who are familiar with the instructions, to operate the machine. • Stay away from breakable objects, such as house windows, auto glass, greenhouses, etc. • Clear the area of objects such as rocks, toys, wire, bones, sticks, etc., which could be picked up and thrown by the spinning lines. • Be sure the area is clear of other people before trimming, particularly small children and pets. Stop machine if anyone enters the area. • Wear appropriate clothing such as a long-sleeved shirt or jacket. Also wear long trousers or slacks. Do not wear shorts. • Do not wear loose clothing which could get caught in this equipment. • Do not operate the machine when barefoot or wearing open sandals. Always wear work gloves and sturdy footwear. Leather work shoes or short boots work well for most people. These will protect the operator's ankles and shins from small sticks, splinters, and other debris, and improve traction. • Do not pull machine backwards unless absolutely necessary. Always look down and behind before and while moving backwards. 3 II. SLOPE OPERATION IV. SERVICE Slopes and fall severe caution. not trim • Use extra care in handling gasoline and other fuels. They are flammable and vapors are explosive. Use only an approved container. Never remove gas cap or add fuel with the engine running. Allow engine to cool before refueling. Do not smoke. Never refuel the machine indoors. Never store the machine or fuel container inside where there is an open flame, such as a water heater Move away from fueling site before starting engine. • Never run a machine inside a closed area. • Never make adjustments or repairs with the engine (motor) running. Disconnect the spark plug wire, and keep the wire away from the plug to prevent accidental starting. • Keep nuts and bolts, especially trimme head and engine bolts, tight and keep equipment in good condition. • Never tamper with safety devices. Check their proper operation regularly. • Keep machine free of grass, leaves, or other debris buildup. Clean oil or fuel spillage. Allow machine to cool before storing. • Stop and inspect the equipment if you strike an object. Repair, if necessary, before restarting. • Do not change the engine governor setting or overspeed the engine. • Clean and replace safety and instruction decals as necessary. are a major factor related to slip accidents which can result in injury. All slopes require extra If you feel uneasy on a slope, do it. DO: • Trim across the face of slopes: never up and down. Exercise extreme caution when changing direction on slopes. • Remove obstacles such as rocks, tree limbs, etc. • Watch for holes, ruts, or bumps. Tall grass can hide obstacles. DONO_ • Do not trim near drop-offs, ditches or embankments. The operator could lose footing or balance. • Do not trim excessively steep slopes. • Do not trim on wet grass. Reduced footing could cause slipping. III. CHILDREN Tragic accidents can occur if the is not alert to the presence of Children are often attracted to the and the trimming activity. Never that children will remain where saw them. operator children. machine assume you last • Keep children out of the trimming area and under the watchful care of another responsible adult. • Be alert and turn machine off if children enter the area. • Before and while moving backwards, look behind and down |or small children. • Never allow children to operate the machine. • Use extra care when approaching blind corners, shrubs, trees, or other objects that may obscure vision. ta_nL.Ookfor this symbol to point out impor t safety precautions. It means CAUTION!!! BECOME AWAREI!! YOUR SAFETY IS INVOLVED. ,I(_CAUTION: In order to prevent accidental starting when setting up, transporting, adjusting or making repairs, always disconnect spark plug wire and place wire where it cannot contact spark plug. _WARNING: The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. 4 Read these instructions and this manual in its entirety before you attempt to assemble or operate your new trimmer. IMPORTANT: This tdmmer is shipped WITHOUT OIL OR GASOLINE in the engine. Your new trimmer has been assembled at the factory with the exception of those parts left • unassembled for shipping purposes. All parts such as nuts, washers, bolts, etc., necessary to complete the assembly have been placed in the parts bag. To ensure safe and proper operation of your trimmer, all parts and hardware you assemble must be tightened securely. Use the correct tools as necessary to ensure proper tightness. TO REMOVE 20 oz. Bottle of oil FROM CARTON • Remove loose parts included with trimmer. • Cut down two end comers of carton and lay end panel down flat. • Remove all packing materials. • Roll trimmer out of carton and check carton thoroughly for additional loose parts. HOW TO SET UP YOUR TRIMMER TO UNFOLD HANDLE IMPORTANT: Unfold handle carefully so as not to pinch or damage control cables. • Loosen handle knobs enough to allow upper handle to be unfolded from the shipping position. • Raise upper handle section into place on lower handle and tighten handle knob. • Remove handle padding holding trimmer head control bar to upper handle. Loose Parts Packed Separately Safety Goggles TRIMMER Trimmer Lines (2) Sets (0.130 diameter x 16.75 inches long) Handle knob Lower handle 5 KNOW YOUR TRIMMER READ THIS OWNER'S MANUALAND SAFETY RULES BEFORE OPERATING YOUR TRIMMER. Compare the illustrations with your trimmer to familiarize yourself with the location of various controls and adiustments. Save this manual for future reference. These symbols may appear on your trimmer or in literaturesupplied with the product. Learn and understand WARNIIIG their meaning. A_O _ RARY OROU'IU _ @ CAUTION SLOW FUEL OIL head control bar Trimmer control OFF FAST Trimmer Throttle ENGINE head control lever Starter handle Gasoline cap Engine cover Handle knob Primer Engine oil cap w/ dipstick Chassis head •Trimmer line IMPORTANT: This trimmer is shipped WITHOUT OIL OR GASOLINE in the engine. Throttle control - used for starting and stopping the engine and allows you to select either fast or slow engine speed. Starter handle - used for starting the engine. Trimmer head control lever - used to engage trimmer head. Trimmer head control bar - must be held down to the handle to engage trimmer head. Release to stop the trimmer head. Primer - pumps additional fuel from the carburetor to the cylinder for use when starting a cold engine. 6 TRIMMER HEAD DRIVE CONTROL The operation of any trimmer can result in :oreign objects thrown into the eyes, ,vhich can result in severe eye damage. &lways wear safety glasses or eye shields ,vhile operating your trimmer or performing any adjustments or repairs. We recommend a wide vision safety mask over spectacles or standard safety glasses. The safety goggles provided with your trimmer may be worn over spectacles. Your trimmer is equipped with a trimmer head drive control bar and lever which requires the operator to be positioned behind the trimmer handle to operate the trimmer. • Trimmer head rotation is controlled by holding the trimmer head control bar down to the handle and pushing the drive control lever forward until it clicks; then release the lever. • Trimmer head rotation wilt stop when the control bar is released. Drive control lever HOW TO USE YOUR TRIMMER k ENGINESPEED The engine speed is controlled by a throttle located on the side of the upper handle. Fast position is for starting and normal trimming. Slow is for light trimming and fuel economy. Stop is for stopping the engine. Trimmer head control bar To engage trimmer head 7 Trimmer head disengaged BEFORE STARTING ENGINE ADD OIL Your trimmer is shipped without oil in the engine. • Be sure trimmer is level and area around oil fill is clean. • Remove engine oil cap and fill to the full line on the dipstick. NOTE: Allow oil to settle down into engine for accurate dipstick reading. • Engine holds 20 oz. of oil. For type and grade of oil to use, see "ENGINE" in Maintenance section of this manual. • Pour oil slowly. Do not over |ill. • Check oil level before each use. Add oil if needed. Fill to full line on dipstick. • To read proper level, tighten engine oil cap each time. • Reinstall engine oil cap and tighten. • Change the oil after every 25 hours of operation or each season. You may need to change the oil more often under dusty, dirty conditions. ADD GASOLINE TO START ENGINE • To start a cold engine, push primer thr_ (3) times before tryingto start. Use a fin push. This step is not usually necessal when starting an engine which has already run for a few minutes. • Move throttle control lever to fast positic • Hold upper handle firmly and pull start_ handle quickly. Do not allow starter rol: snap back. TO STOP ENGINE • To stop engine, move throttle control le to stop position. NOTE: In cooler weather it may be necessary to repeat priming steps. In warmer weather overpriming may cau: flooding and engine will not start. If yo do flood engine, wait a few minutes before attempting to start and do not repeat priming steps. __7_',_ control Throttle __, Starter handle • Fill fuel tank. Use fresh, clean, regular unleaded gasoline with a minimum of 87 octane. Do not mix oil with gasoline. Purchase fuel in quantities that can be used within 30 days to assure fuel freshness. Ji_WARNING: Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage of 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel next season. See Storage Instructions for additional information. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. _, CAUTION: Fill to bottom of gas tank filler neck. Do not overfill. Wipe off any spilled oil or fuel. Do not store, spill or use gasoline near an open flame. Gasoline Engine oil cap TRIMMING R TIPS • Set the throttle control in the fast position. If the weeds or grass are tall and thick, operate the trimmer at a slower walking speed. • Frequently clean the underside of the trimmer to remove any grass build up. Keep top of engine around starter cle_ and clean of grass clippings and chaff This will help engine air flow and exte engine life. See TO REMOVE ENGINI COVER in the Maintenance section o this manual. • For best results and longer lasting tin( use the ends of the line to do the cutti_ This is easily done by moving slowly through very thick and heavy weeds. • Use the left side of trimmer when trimming along fences, walls, flowerb_ and other such objects. • If trimmer lines become too short, it wi take longer to complete the job. If trimmer lines are worn to less than hal their original length, they should be replaced. See TO REPLACE TRIMME LINE in the Maintenance section of thi manual. • Trimmer head contact with concrete, asphalt or other hard surfaces may cause premature wear of the ball on bottom of trimmer head. As COMPLETE T a Check for Loose Fasteners V' clean Trimmer I,/ I/ I/ I M Clean Under Engine Cover I_ Check drive belt/pulleys a Check/Replace Trimmer Lines Check Engine Oil Level E _2 i/ I/3 I_ Change Engine Oil I,/1,2 Clean Air Filter I_ Inspect Muffler If Clean or Replace Spark Plug I/ Replace Air Filter Paper Cartridge I/2 N :G 2 i / 1 - Change more often when operating under a heavy load or in high ambient temperatures 2 - Service more often when operating in dirty or dusty conditions. 3 - Replace tdmmer lines when they have wom to half their original length. GENERALRECOMMENDATIONS IMPORTANT: Do not oil or grease plastic wheel bearings. Viscous lubricants will attract dust and dirt that will shorten the life of the self- lubricating bearings. If you feel they must be lubricated, use only a dr/, powdered graphite type lubricant sparingly. The warranty on this trimmer does not cover items that have been subjected to operator abuse or negligence. To receive full value from the warranty, operator must maintain trimmer as instructed in this manual. Some adjustments will need to be made periodically to properly maintain your unit. All adjustments in the Service and Adjustments section of this manual should be checked at least once each season. • Once a year, replace the spark plug and replace air filter element. A new spark plug and clean/new air filter element assures proper air-fuel mixture end helps your engine run better and last longer. • Follow the maintenance schedule in this manual. BEFORE EACH USE PRODUCT SPECIFICATIONS Serial No. Date of Purchase: Gasoline Type: Gasoline Capacity: Oil Type: (API-SF/SG/SH) Oil Capacity: Spark Plug : (Gap: .030") Valve Clearance: Trimmer Trimmer • Check engine oil level. • Check for loose fasteners. • Clean under engine cover. LUBRICATION Unleaded Regular 1.25 Quarts SAE 30 (Above 32 g F) SAE 5W-30 (Below 32 _ F) 20 Ozs. Champion J19LM or RJ19LM Intake: .004-.008 Exhaust: .004-.008 .130 inch Line Dia.: 16.75 inches Line Length: The model and serial numbers will be found on a decal attached to the rear of the trimmer. Record both serial number and date of To prolong the useful life of your trimmer, change engine oil as recommended in this section of Owner's Manual. purchase 9 in space provided above. TRIMMER Always observe safety rules when performing any maintenance. TIRES • Keep tires free of gasoline, oil, or insect control chemicals which can harm rubber. • Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage. TRIMMER LINE For best results, replace trimmer lines when they have worn to half their original length. Use .130 inch diameter trimmer line. Cut new trimmer line length to 16-314 inches. After new line is installed on trimmer head, check all lines so they do not vary more then one (1) inch in length. This is important to make sure the trimmer head is balanced and will not vibrate abnormally. _WARNING: Use only the specified trimmer line. Do not use other materials such as wire, string, rope, etc. Wire can break off during trimming and become a dangerous missile that can cause serious injury. TO REPLACE TRIMMER LINE • Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug. • Remove worn trimmer line from line carrier plate. • Fold new, cut to length, trimmer line in half and insert folded end through carrier plate opening to back side of retainer clip. • With folded end of line at back side of retainer clip, pull line outward until line is fully seated under the retainer clip. • Repeat on other side of carrier plate. • Check all lines to be sure they are the same length. • Reconnect spark plug wire to spark plug. Trimmer line Carrier plate opening \ \ Retainer clip ENGINE LUBRICATION Use only high quality detergent oil rated with API service classification SF, SG or SH. Select the oil's SAE viscosity grade according to your expected operating temperature. SAE VISCOSITY GRADES NOTE: Although multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, these multi-viscosity oils will result in increased oil consumption when used above 32°F. Check your engine oil level more frequently to avoid possible engine damage from running low on oil. Change the oil after every 25 hours of operation or at least once a year if the lawn mower is not used for 25 hours in one year. Check the crankcase oil level before starting the engine and after each five (5) hours of continuous use. Tighten oil plug securely each time you check the oil level. 10 TO CHANGE ENGINE OIL NOTE: Before tipping trimmer to drain oil, drain fuel tank by running engine until fuel tank is empty. • Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with spark plug. • Remove engine oil cap; lay aside on a clean surface. • Tip trimmer on its side as shown and drain oil into a suitable container. Rock trimmer back and forth to remove any oil trapped inside of engine. • Wipe off any spilled oil on trimmer and on side of engine. • Fill engine with oil. Fill only to the "FULL" line on the dipstick. DO NOT overfill. Tu rn clockwise to remove Collar Air filter cover • Replace engine oil cap. • Reconnect spark plug wire to spark plug. Turn counterclockwise tighten to MUFFLER Inspect and replace corroded muffler as it could create a fire hazard and/or damage. SPARK PLUG Change your spark plug each year to make your engine start easier and run better. Set spark plug gap at .030 inch. CLEANING IMPORTANT: For best performance, keep trimmer free of built-up grass and trash. Clean the underside of your trimmer after each use. AIR FILTER Your engine will not run properly and may be damaged by using a dirty air filter. Replace the air filter every year, more often if you mow in very dusty, dirty conditions. Do not wash air filter. TO CHANGE &CAUTION: Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with the spark plug. • Turn trimmer on its side. Make sure air filter and carburetor are up. Clean the underside of your trimmer by scraping to remove build-up of grass and trash. • Clean engine often to keep trash from accumulating. A clogged engine runs hotter and shortens engine life. • Keep finished surfaces and wheels free of all gasoline, oil,etc. • We do not recommend using a garden hose to clean trimmer unless the electrical system, muffler, air filter and carburetor are covered to keep water out. Water in engine can result in shortened engine life. AIR FILTER • Remove the air filter by turning clockwise to the stop and pull away from collar. • Remove filter from inside of cover. • Clean the inside of the cover and the collar to remove any dirt accumulation. • Insert new filter into cover. • Put air filter cover and filter into collar aligning the tab with the slot. • Push in on cover and turn counterclockwise to tighten. 11 CLEAN UNDER ENGINE • Unscrew knob on top of cover. • Lift cover up and away from engine. • Clean cover and cover screen thoroughly. • Clean top of engine and air intake screen. • Replace engine cover and tighten knob securely. Be sure the front tabs engine cover are located in the slots engine housing. COVER Clean under engine cover before each use, or more frequently in heavy cutting or dirty conditions. Engine cover screen and engine air intake screen must be kept free of dirt and chaff to prevent engine damage from overheating. Knob Engine cover Threaded Engine cover screen Starter rope Air intake screen Housing slots _1, CAUTION: Before performing any service and adjustments: • Stop engine. • Make sure the rotating lines and all moving parts have completely stopped. • Disconnect spark plug wire from spark plug and place where it cannot come in contact with plug. TRIMMER TO REMOVE/REPLACE DRIVE BELT TRIMMER HEAD • Remove screw at front of chassis cover. • Lift cover up and away from trimmer. • Turn trimmer on its side with carburetor and fuel cap up. • Remove belt from engine pulley on crankshaft. • Remove belt from trimmer head pulley. • Remove idler assembly from chassis and remove belt and idler from trimmer. • Remove belt from idler assembly by removing bottom belt keeper and idler pulleys. • Assemble new belt, idler pulleys and bottom belt keeper to idler bracket. Tighten pulley bolts securely. • Be sure belt is inside top belt keeper on idler assembly. • Position belt and idler assembly in trimmer and assemble idler to chassis. Tighten securely. • Install belt around trimmer head pulley and engine pulley. • Replace chassis cover and tighten screw securely. • Always use Craftsman replacement parts to assure proper fit and long life. 12 /Screw Chassis cover Engine pulley Spacer Idler bracket Chassis Nut (. V-idler Idler Flatidler i Bottom belt keeper Belt Flat idler Top belt keeper Trimmer head pulley "--. ENGINE SPEED Bolt Your engine speed has been factory set. Do not attempt to increase engine speed or it may result in personal injury. If you believe that the engine is running too fast or too slow, take your unit to a Sears or other qualified service center for repair and/or adjustment. CARBURETOR Your carburetor has a nonadjustable fixed main jet for mixture control. If your engine does not operate properly due to suspected carburetor problems, take your unit to a Sears or other qualified service center for repair and/or adjustment. IMPORTANT: Never tamper with the engine governor, which is factory set for proper engine speed. Overspeeding the engine above the factory high speed setting can be dangerous. If you think the engine-governed high speed needs adjusting, take your unit to a Sears or other qualified service center, which has proper equipment and experience to make any necessary adjustments. 13 Immediately prepare your trimmer for storage at the end of the season or if the unit will not be used fer 30 days or more. TRIMMER When trimmer is to be stored for a period of time, clean it thoroughly, remove all dirt, grease, leaves, etc. Store in a clean, dry area. • Clean entire trimmer (See "CLEANING" in the Maintenance section of this manual). • Lubricate as shown in the Maintenance section of this manual. • Be sure that all nuts, bolts, screws, and pins are securely fastened. Inspect moving parts for damage, breakage and wear. Replace if necessary. • Touch up all rusted or chipped paint surfaces; sand lightly before painting. HANDLE You can fold your trimmer handle for storage. • Loosen handle knobs enough to allow upper handle to be folded forward. IMPORTANT: When folding the handle for storage or transportation, be sure to fold the handle as shown or you may damage the control cables. Upper handle Handle knob ENGINE FUEL SYSTEM IMPORTANT: It is importantto prevent gum deposits from forming in essential fuel system parts such as carburetor, fuel filter, fuel hose or tank during storage. Also, experience indicates that alcohol blended fuels ( called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. • Drain the fuel tank. • Start the engine and let it run untilthe fuel lines and carburetor are empty. • Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur. • Use fresh fuel next season. NOTE: Fuel stabilizer is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Add stabilizer to gasoline in fuel tank or storage container. Always fellow the mix ratio found on stabilizer container. Run engine at least 10 minutes after adding stabilizf_r to allow the stabilizer to reach the carburetor. Do not drain the gas tank and carburetor if using fuel stabilizer. ENGINE OIL Drain oil (with engine warm) and replace with clean engine oil. (See "ENGINE" in the Maintenance section of this manual). CYLINDER • Remove spark plug. • Pour one ounce (29 ml) of oil through spark plug hole into cylinder. • Pull starter handle slowly a few times to distribute oil. * Replace with new spark plug. OTHER • Do not store gasoline from one season to another. • Replace your gasoline can if your can starts to rust. Rust and/or dirt in your gasoline will cause problems. • If possible, store your unit indoors and cover it to give protection from dust and dirt. • Cover your unit with a suitable protective cover that does not retain moisture. Do not use plastic. Plastic cannot breathe which allows condensation to form and will cause your unit to rust. IMPORTANT: Never cover trimmer while engine and exhaust areas are still warm. ACAUTION: Never store the trimmer with gasoline in the tank inside a building where fumes may reach an open flame or spark. Allow the engine to cool before storing in any enclosure. 14 TROUBLESHOOTING PROBLEM Does not start CHART CAUSE CORRECTION 1. Dirty air filter. 2. Out of fuel. 3. Stale fuel. 4. Water in fuel. Spark .plug wire is disconnected. 6. Bad spark plug. 7. Throttle control lever not in correct position (if equipped). . 1. Clean/replace air filter. 2. Fill fuel tank. 3. Drain tank and refill with fresh clean fuel. 4. Drain fuel tank and carburetor and refill tank with fresh gasoline. 5. Connect wire to plug. 6. Replace spark plug. 7. Move throttle lever to FAST position. Loss of power 1. Dirty air filter. 2. Buildup of grass, leaves, and trash under trimmer. 3 Too much oil in engine. 4. Walking speed too fast. 1. Clean/replace a_r filter. 2. Clean underside of trimmer and trimmer head. 3. Check oil level. 4. Trim at slower walking speed. Excessive Vibration 1. Lines uneven or broken. 2. Loose nuts or bolts. 1. Check trimmer lines. 2. Check all hardware, including engine bolts. 3. Check/repair trimmer head. 3. Damaged tnmmer head. Starter rope hard to pull 1. Bent engine crankshaft. 1. Contact a Sears or other qualified service center. Loss of head drive 1. Belt not driving. 1. Put belt on pulleys or replace belt if broken. Poor trimming performance 1. Trimmer line length is too short. 1. If line is worn or broken to half original length, replace line. 2. Move throttle lever to FAST position. 2. Throttle control lever not in correct position (if equipped). Trimmer head does not retain line 1. Trimmer line not properly installed. 2. Broken line retainer clip. 3. Incorrect size of trimmer line. 15 1. Follow instructions in Maintenance section. 2. Replace string carrier plate assembly. 3. Use .130 diameter trimmer line. CRAFTSMAN WEED TRIMMER-- MODEL NO. 917.773410 6 29 19 30 5 28 18 \ 20- 1 21. 12 27 8 \ 22 2 30 CRAFTSMAN KEY NO. 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 --- WEED TR IMM ER- - MODEL NO. 917.773410 PART NO. 150406 169791 STD502502 174317 174274 174030 169821X479 150078 169797X479 131959 136376 153638 STD541025 66426 171449 174038 158755 169787 150078 169789 87143 169795 83923 174037 174034 174032 172221 169803 169804 DESCRIPTION Engine Model No. 143.004008 (See Breakdown) Engine Bolt 3/8-16 Engine Pulley (Includes setscrew) Setscrew, Pulley Engine Cover w/screen Engine Cover Knob Engine Cover Stud Lower Handle Screw Hx Wshd 5/16-18 x .75 Upper Handle HandleBolt Handle Knob RopeGuide Locknut 1/4 x 20 WireTire Control Bar Throttle Control Hex Washer Screw Axle Shaft Screw hex Wshd 5/16-18 x .75 Axle Spacer Wave Was he r Wheel 10 x 1.75 Hex Flange Locknut 3/8-16 Drive Control Decal- Warning Decal - Engine Cover Bracket - Axle Support Safety Goggles (Not Shown) Owner's Manual Available accessories not included with trimmer: 7"133623 Gas Can (2.5 gal.) 7133000 SAE 30W Oil (20 oz.) 7"179996 Trimmer Line (Pack of 24 strings, .130 dia.) 7"185642 Trimmer Line Bulk Pack( 150 Feet, .130 dia.) _31 CRAFTSMAN WEED TRIMMER-- MODEL NO. 917.773410 1 \ 14 i 43 4 17----4_ I1 23 24 5 -- 26 9 0 --28 m29 18_ _, o--31 I 19 17 32 CRAFTSMAN WEED TRIMMER- - MODEL NO. 917.773410 KEY NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 34 35 36 37 38 39 40 41 42 43 45 PART NO. 174024X459 174040 174591 169790 172145X004 166042 173716 751592 166043 160829 155552 173717 142748 145212 173811 170552 57808 85768 169800 169764 149746 STD541137 STD551137 STD551037 169792 172551 174549 172603 169766X459 174543 174581 173531 172635 172516 174580 172523 172636 173619 174029 751153 174036 174596 DESCRIPTION Chassis Assembly Line .130 Dia x 16.75 Screw 5/16-18 x 1 Belt V Idler Bracket Idler Pulley V-Groove Hex Bolt 3/8-16 x 1.25 Hex Locknut 3/8-16 Idler Pulley-Flat Shoulder Bolt Locknu! 5/16-18 Spacer Shoulder Bolt Flange Locknut Return Spring Debris Shield Screw 1/4-20 x 1/2 Screw #10-24 x 3/4 Skirt Chassis Cover - Top Screw #10-24 x 1-3/4 Nut 3/8-24UNF Lockwasher 3/8 Flatwasher 3/8 Pulley - Driven Spacer- Pulley Beanng Jackshaft Cover, Bottom Spindle Hsg. Asm. (* Includes Upper Bearing Key No. 27) Retaining Ring 17mm External Carrier Plate Assembly (Fixed) Spacer Cover, Bearing Retaining Ring 40mm Internal Mow Ball Bolt, Mow Ball Head Assembly Complete (Includes Key Nos. 22-39) Spacer Locknut Flanged 5/16-18 Decal - Instruction Bottom Belt Keeper 33 CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008 261 287 /1_ 90O I _10 262f_ ,285 400 135 130 126 101 120 416 119 125 1_ 182 212 |'89 34 370 A CRAFTSMAN KEY PART NO. NO. 1• 2 6 7 2 12A 37266 26727 33734 36557 36775 36558 12B 14 15 16 17 18 36694 28277 30589 34839A 31335 651018 19 20 30 40 37453 32600 36797 40004 40005 41 36070 36071 42 43 45 40006 40007 20381 36777 46 48 50 32610A 27241 37460 52 69 70 29914 37130 34311E 72 75 80 81 82 83 86 89 90 92 93 100 101 103 36083 27897 30574A 30590A 30591 30588A 650488 610961 611213 650815 650816 34443B 610118 651007 104 110 119 120 125 37480 36230 36787 36825 37288 126 37289 4-CYCLE MODEL NO. 143.004008 ENGINE KEY NO. DESCRIPTION Cylinder (Incl. 2,20 & 150) Dowel Pin Breather Element BreatherAss'y.(Incl. 6& 12A) Breather Tube Breather Cover & Tube (Incl. 12B) Breather Tube Elbow Washer Governor Rod (Incl. 14) Governor Lever Governor Lever Clamp Screw, Torx T-15, 8-32 x 19/64" Extension Spring Oil Seal Crankshaft Piston, Pin & Ring Set (Std.) Piston, Pin & Ring Set (.010" OS) Piston & Pin Ass'y. (Std.) (Incl. 43) Piston & Pin Ass'y. (.010" OS) (Incl. 43) Ring Set (Std.) Ring Set (.010" OS) Piston Pin Retaining Ring Connecting Rod Ass'y. (Incl. 46) Connecting Rod Bolt Valve Lifter Camshaft (Exhaust MCR) (Inc. ref 104) Oil Pump Ass'y. Mounting Flange Gasket Mounting Flange (IncL 72 thru 83,306) Oil Drain Plug Oil Seal Governor Shaft Washer Governor GearAss'y. (Incl. 81) Governor Spool Screw, 1/4-20 x 1-1/4" Flywheel Key Flywheel Belleville Washer Flywheel Nut Solid State Ignition Spark Plug Cover Screw, TorxT-15, 10-24 x 15/16" Cam Bushing Ground Wire Cylinder Head Gasket Cylinder Head Exhaust Varve (Std.) (Incl. 151) Intake Valve (Std.) (Incl. 151i PART NO. 130 6021A 135 35395 150 31672 151 31673 151A40017 169 36783 172 36784 174 30200 178 29752 179 30593 182 6201 184 26756 185 36785 186 36201 200 37134 206 610973 207 36200B 209 30200 223 650451 224 36786 238 650932 239 34338 241 36919 245 36905 250 37122 260 37213 261 30200 262 650831 275 36790A 277 650988 285 35000A 287 650926 290 34357 292 26460 300 35586 301 36246 305 35577 306 36996 307 35499 309 650562 310 35578 313 34080 370C37318 380 640262 390 590739 400 36792B 416 36085 417 900 650821 NOTE: 590702 NOTE: inches 35 DESCRIPTION Screw, 5/16-18 x 1-1/2" Resistor Spark Plug (RJ19LM) Valve Spring Valve Spring Cap Intake Valve Seal Valve Cover Gasket Valve Cover Screw, 10-24 x 9/16" Nut & Lock Washer, 1/4-28 Retainer Clip Screw, 1/4-28 x 7/8" Carburetor To Intake Pipe Gasket Intake Pipe Governor Link Control Bracket (Incl. 206) Terminal Throttle Link Screw, 10-24 x 9/16" Screw, 1/4-20 x 1" Intake Pipe Gasket Screw, 10-32 x 49/64" Air Cleaner Gasket Air Cleaner Collar Air Cleaner Filter Air Cleaner Cover Blower Housing Screw, 10-24 x 9/16" Screw, 1/4-20 x 1/2" Muffler Screw, 1/4-20 x 2-9/32" Starter Cup Screw, 8-32 x 21/64" Fuel Line Fuel Line Clamp Fuel Tank (Incl. 292 & 301) Fuel Cap Oil Fill Tube "O"-Ring "O"-Ring Screw, 10-32 x 3/8" Dipstick Spacer Primer Decal (3X) Carburetor (Incl. 184) Rewind Starter Gasket Set (Incl. Items Marked *) Spark Arrestor Kit (Incl. 417)(Optional) Screw, 10-32 x 1/2" (Optional) REPLACEMENT SHORT BLOCK 750812C RPM High 3450 to 3750 RPM Low 2000 to 2300 This engine could have been built with starter All component dimensions given in U.S. 1 inch = 25.4 mm CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008 _16 36A 27 J3--37 (_m37 36 CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008 KEY PART NO. NO. DESCRIPTION ----640262 1 631615 2 631767 4 631184 5 631183 6 640070 7 650506 16 631807 17 651025 18 630766 20 640018 20A 640200 25 631867 27 631024 28 632019 29 631028 30 631021 31 631022 35 640259 36 640080 36A 632766 37 632547 40 640175 44 27110A 47 630748 48 631027 60 632760B Carburetor (Incl. 184 of Engine Parts List) Throttle Shaft & Lever Assembly Throttle Return Spring Dust Seal Washer Dust Seal (Throttle) Throttle Shutter Shutter Screw Fuel Fitting Throttle Crack Screw/Idle Speed Screw Tension Spring Idle Restrictor Screw Idle Restrictor Scr'we Cap (Black) Float Bowl Float Shaft Float Float Bowl "O" Ring Inlet Needle, Seat, & Clip (Incl. 31) Spring Clip Primer Bulb/Retainer Ring Main Nozzle Tube Carburetor Tube "O" Ring, Main Nozzle Tube High Speed Bowl Nut Bowl Nut Washer Welch Plug, Idle Mixture Well Welch Plug, Atmospheric Vent Repair kit (Incl. Items Marked *) * * * * * * * * * * 37 CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008 12 13 O'--'_4 Ore2 KEY PART NO. NO. ----590702 1 590599A 2 590600 3 590696 4 590601 5 590697 6 590698 7 590699 8 590700 11 590703 12 590535 13 590701 DESCRIPTION Recoil Starter Spring Pin (Incl. 4) Washer Retainer Washer Brake Spring Starter Dog Dog Spring Pulley & Rewind Spring Ass'y. Starter Housing Ass'y. (40 degree grommet) Starter Rope ( 98" X 9/54" dia.) Starter Handle 38 CRAFTSMAN 4-CYCLE ENGINE MODEL NO. 143.004008 --14 KEY PART NO. NO. ----590739 3 590740 6 590616 7 590617 8 590618A 11 590638 12 590535 13 14 590701 590760 DESCRIPTION Rewind Starter Retainer Starter Dog Dog Spring Pulley & Rewind Spring Ass'y Starter Housing Ass'y (40 degree grommet) Starter Rope (Length 98" x 9/ 64" dia.) Starter Handle Spring Clip 39 Get it fixed, at your home or ours! 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