Wemars WS-ST42G User manual
02ContentsIntroduction.....................................................................2Safety..............................................................................4Assembly......................................................................9Operation......................................................................13Maintenance.................................................................17Technical Data ........................................................... 19IntroductionProduct descriptionThe product is a grass trimmer with a combustionengine.Work is constantly in progress to increase your safetyand efficiency during operation. Speak to Wemarsservice for more information.Intended useThe product can be used with a trimmer head to cutgrass. Do not use the product for other tasks than grasstrimming and grass clearing.Note: National or local regulations may regulate the use.Comply to given regulations.Product overviewHarness Trimmer Head 3 T Blade Manual Mixture ContainerTroubleshooting............................................................20Bevel GearCutting Attachment GuardShaft AU HandleThrottle TriggerStop SwitchSpark Plug Shaft CouplingFuel TankAir Primer BulbChoke ControlHandle AdjustmentTrigger Lockout Starter Handle Air Filter CoverSpacerHarness EyeletShaft BKnobLock Button
Symbols on the productBe careful and use the product correctly.This product can cause serious injury ordeath to the operator or others.Read the operator's manual carefully andmake sure that you understand theinstructions before you use this product.Use a protective helmet in locations whereobjects can fall on you. Use approvedhearing protection. Use approved eyeprotection.Use approved protective gloves.Use heavy-duty slip-resistant boots.The product can cause objects to eject,which can cause injury.Maximum speed of the output shaft.
50FT
15 m
50FT
15 m
Keep a minimum of 15 m distance topersons and animals during operation of theproduct.Hex WrenchScrewdriver WrenchSpacerCatcher Allen Key Tools Bag Tools bag Choke off Fuel.03Product liabilityAs referred to in the product liability laws, we are notliable for damages that our product causes if:•the product is incorrectly repaired.•the product is repaired with parts that are not fromthe manufacturer or not approved by themanufacturer.•the product has an accessory that is not from themanufacturer or not approved by the manufacturer.•the product is not repaired at an approved servicecenter or by an approved authority.Choke onAir Primer Bulb
SafetySafety definitionsWarnings, cautions and notes are used to point outspecially important parts of the manual.WARNING: Used if there is a risk of injury ordeath for the operator or bystanders if theinstructions in the manual are not obeyed.CAUTION: Used if there is a risk of damageto the product, other materials or theadjacent area if the instructions in themanual are not obeyed.Note: Used to give more information that is necessary ina given situation.Safety instructions for operationWARNING: Read the warning instructionsthat follow before you use the product.•You must understand the difference between grassclearing and grass trimming before use.•If you encounter a situation where you are uncertainhow to proceed you should ask an expert. ContactWemars service . Avoid all usage which you you consider to be beyond your capability .•Never use a product that is faulty. Carry out thesafety checks, maintenance and service instructionsdescribed in this manual. Some maintenance andservice measures must be carried out by trained andqualified specialists. •All covers, guards and handles must be fitted beforeyou start the product. Ensure that the spark plug capand ignition lead are undamaged to avoid the risk ofelectric shock.•Never use the product if you are fatigued, whileunder the influence of alcohol or drugs, medicationor anything that could affect your vision, alertness,coordination or judgement.•Do not use the product in bad weather such asdense fog, heavy rain, strong wind, intense cold,etcetera. Working in bad weather is tiring and oftenbrings added risks, such as icy ground,unpredictable felling direction, etcetera.•The only accessories you can operate with thisengine unit are the cutting attachments that werecommend. •Never allow children to use or be in the vicinity of theproduct. As the product is equipped with a spring-loaded start/stop switch and can be started by lowspeed and force on the starter handle, even smallchildren under some circumstances can produce theforce necessary to start the product. This can meana risk of serious personal injury. Therefore removethe spark plug cap when the product is not underclose supervision.04•Running an engine in a confined or badly ventilatedarea can result in death due to asphyxiation orcarbon monoxide poisoning.•The complete clutch cover and shaft must be fittedbefore the product is started, otherwise the clutchcan come loose and cause personal injury.•Ensure that no people or animals come closer than15 m while you work. When several operators areworking in the same area the safety distance shouldbe at least 15 m. Otherwise there is a risk of seriouspersonal injury. Stop the product immediately ifanyone approaches. Never swing the productaround without first checking behind you to makesure that noone is within the safety zone.•Ensure that people, animals or other things can notaffect your control of the product or that they do notcome in contact with the cutting attachment or looseobjects that are thrown out by the cuttingattachment. However, do not the product unless youare able to call for help in the event of an accident.•Always inspect the working area. Remove all looseobjects such as stones, broken glass, nails, steelwire, string, etcetera, that could be thrown out orbecome wrapped around the cutting attachment.•Make sure that you can move and stand safely.Check the area around you for possible obstacles(roots, rocks, branches, ditches, etcetera) in caseyou have to move suddenly. Take great care whenyou work on sloping ground.
•Keep a good balance and a firm foothold at all times.Do not overreach.•Always hold the product with both hands. Hold theproduct on the right side of your body.•Keep the cutting attachment below waist level.•Switch off the engine before you move to anotherarea. Fit the transportation guard before you carry ortransport the equipment any distance.•Never put the product down with the engine runningunless you have it in clear sight.•Stop the engine and cutting equipment before youremove material that has wound around the bladeshaft. Neither the operator of the product nor anyoneelse may attempt to remove the cut material whilethe engine is running or the cutting equipment isrotating, as this can result in serious injury. Thebevel gear can get hot during use and may remainso for a while afterwards. You could get burnt if youtouch it.•Watch out for thrown objects. Always wear approvedeye protection. Never lean over the cuttingattachment guard. Stones, rubbish, etcetera, can bethrown up into the eyes which can cause blindnessor serious injury.•Sometimes branches or grass get caught betweenthe guard and cutting attachment. Always stop theengine before you clean the product.•Always slow the engine to idle speed after eachworking operation. Long periods at full throttlewithout any load on the engine can lead to seriousengine damage.•Listen out for warning signals or shouts when youwear hearing protection. Always remove yourhearing protection as soon as the engine stops.•Overexposure to vibration can lead to circulatorydamage or nerve damage in people who haveimpaired circulation. Contact your doctor if youexperience symptoms of overexposure to vibration.These symptoms include numbness, loss of feeling,tingling, pricking, pain, loss of strength, changes inskin color or condition. These symptoms normallyappear in the fingers, hands or wrists.•Do not use a product with a damaged spark plugcap.•Do not use a product with a defective muffler.•Keep all parts of your body away from the rotatingcutting attachment and hot surfaces.•Never use a product with a faulty muffler•Never start or use the product indoors, nearcombustible material or in spaces that lacks properventilation. The exhaust fumes from the enginecontain carbon monoxide, an odorless, poisonousand highly dangerous gas. Also, the exhaust fumesare hot and may contain sparks that can start a fire.Personal protective equipmentWARNING: Read the warning instructionsthat follow before you use the product.•Always use approved personal protective equipmentwhen you use the product. Personal protectiveequipment cannot fully prevent injury but itdecreases the degree of injury if an accident doesoccur. Let your dealer help you select the rightequipment.•Use a protective helmet where there is a risk offalling objects.•Use approved hearing protection that providesadequate noise reduction. Long-term exposure tonoise can result in permanent hearing impairment.•Use approved eye protection. If you use a visor, youmust also use approved protective goggles.Approved protective goggles must comply with theANSI Z87.1 standard in the USAs or EN 166 in EUcountries.•Use gloves when necessary, for example when youattach, examine or clean the cutting equipment.05
AB•Use protective boots with steel toes and non-slipsoles.•Use clothing made of a strong fabric. Always useheavy, long pants and long sleeves. Do not useloose clothing that can catch on twigs and branches.Do not wear jewelry, short pants, sandals or go withbare feet. Put your hair up safely above shoulderlevel.06•Keep first aid equipment close at hand.Safety devices on the productWARNING: Read the warning instructionsthat follow before you use the product.In this section the product’s safety features, its purposeand how checks and maintenance should be carried outto ensure that it operates correctly. See instructionsunder the heading to find where these parts are locatedon your product.The life span of the product can be reduced and the riskof accidents can increase if product maintenance is notcarried out correctly and if service and/or repairs are notcarried out professionally. If you need further informationplease contact Wemars service .WARNING: Never use a product withdefective safety components. The product'ssafety equipment must be inspected andmaintained as described in this section. Ifyour product fails any of these checks,contact Wemars service to get it repaired.CAUTION: All servicing and repair work onthe machine requires special training. This isespecially true of the machine′s safetyequipment. If your machine fails any of thechecks described below you must contactWemars service . To do a check of the throttle trigger lockoutThe throttle lockout is designed to prevent accidentaloperation of the throttle control.1.Press the throttle trigger lockout (A) and make surethat the throttle trigger (B) is released . When yourelease the handle the throttle control and the throttletrigger lockout both move back to their initialpositions. This movement is controlled by twoindependent return springs. This arrangementmeans that the throttle control is automaticallylocked at the idle setting.2.Make sure that the throttle trigger is locked at theidle setting when the throttle trigger lockout isreleased.3.Press the throttle trigger lockout and make sure thatit returns to its intial position when you release it.BＡ
4.Do a check of the throttle trigger and throttle triggerlockout move freely and that the return springs workproperly.5.Start the product and apply full throttle.6.Release the throttle and make sure that the cuttingattachment stops and remains at a standstill. If thecutting attachment rotates with the throttle in the idleposition the carburettor idle setting must be checked.See instructions under the chapter .To do a check of the stop switch1.Start the engine(I-open )2.Move the stop switch to the stop position and makesure that the engine stops.(O-stop )To do a check of the cutting attachment guardWARNING: Do not use a cutting attachmentwithout an approved and correctly attachedcutting attachment guard. WARNING: Always use the recommendedcutting attachment guard for the cuttingattachment that you use. If an incorrect orfaulty cutting attachment guard is fitted thiscan cause serious personal injury. The cutting attachment guard prevents injuries fromobjects that eject in the direction of the operator. It also07prevents injuries that occur if you touch the cuttingattachment.1.Do a visual check for damages, for example cracks.2.Replace the cutting attachment guard if it isdamaged.BBA
08To do a check of the mufflerWARNING: Bear in mind that the exhaustfumes from the engine are hot and maycontain sparks which can start a fire. Neverstart the product indoors or nearcombustible material!WARNING: Never use the product indoorsor in spaces lacking proper ventilation.Exhaust fumes contain carbon monoxide, anodorless, poisonous and highly dangerousgas.WARNING: Never use a product with afaulty muffler.The muffler keeps noise levels to a minimum and sendsexhaust fumes away from the operator.•Do a visual check for damage and deformation.•Make sure that the muffler is correctly attached tothe product.Fuel SafetyWARNING: Read the warning instructionsthat follow before you use the product.•Never start the product if you spill fuel on it. Wipe thespillage of and allow remaining fuel to evaporate.•Never start the product if you spill fuel on yourself oryour clothes. Change your clothes and wash anypart of your body that has come in contact with fuel.Use soap and water.•Never start the product if the product is leaking fuel.Check regularly for leaks from the fuel cap and fuellines.•Always put the product on a flat surface and makesure the cutting attachment cannot come in contactwith any object while you add fuel.•Take care when handling fuel. Bear in mind the riskoff fire, explosion and inhaling fumes.•Observe caution when handling fuel and make surethere is adequate ventilation. Fuel and fuel fumesare highly inflammable and can cause serious injurywhen inhaled or allowed to come in contact with theskin.•Mix and pour fuel outdoors, where there are nosparks or flames.•Do not smoke or place hot objects near fuel.•Always stop the engine and let it cool off for a fewminutes before you refuel.•Open the fuel cap slowly so that any excesspressure is released gently when you refuel.•Tighten the fuel cap carefully after you refueled.•Clean the area around the fuel cap. Contamination inthe tank can cause operating problems.•Always move the product 3m (10ft) or further fromthe refuelling area and source before starting.Safety instructions for maintenanceWARNING: Read the warning instructionsthat follow before you use the product.•Only use cutting attachments with the guards werecommend. •Always stop the engine before you do any work onthe cutting attachment. The cutting attachmentcontinues to rotate even after the throttle has beenreleased. Ensure that the cutting attachment hasstopped completely and disconnect the spark plugbefore you start to work on it.•A faulty cutting attachment may increase the risk ofaccidents.•Make sure that the trimmer cord is wound tightly andevenly around the drum, otherwise the product willgenerate harmful vibration.
AssemblyIntroductionWARNING: Before you assemble theproduct, you must read and understand thesafety chapter.1. Loosen the Handle Adjustment screws. 094.Turn the output shaft until one of the holes in thedrive disc aligns with the related hole in the gearhousing.5.Put the locking (allen key) in the hole to lock the shaft.To assemble the U handle2.Install the u handle and tighten the screws . 1.Install the grass catcher
CatcherCutting Attachment Guard
3. Tighten the screws . To assemble the cutting attachmentguard and trimmer head
U Handle
attachment guard Spacer
2. Install the spacer and attachment guard on the shaft.
106. Remove the shaft nuts clockwise by Hex wrench. Drive disc Washer Cover Nuts Drive disc Trimmer Head.Hold the allen key turn the trimmer head anti-clockwise Remove the nuts cover and washer .To assemble the two-piece shaft 1. Remove the shaft A cap 3.Align the tab of the cutting attachment (A) with thearrow of the coupling (B).B2.Turn the knob to loosen the coupling. Knob AATo assemble the 3T blade head
Drive disc Washer Cover Nuts Blade head
Hold the allen key turn the nuts anti-clockwies To assemble the trimmer head WARNING: guard all the time . If not you can’t take down the trimmer head . Keep the drive disc in the shaft
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