Echo SRM-236 Operator's Manual

20Trimming operationBasic trimming operation with metal bladeScything weeds This is cutting by swinging the cutting attachment in a levelarc. It can quickly clear areas of field grass and weeds. Scy-thing should not be used to cut large, tough weeds or woodygrowths. If a sapling or shrub binds the cutting attachment, do not usethe cutting attachment as a lever to free the bind, because thiswill cause cutting attachment failure. Instead, shut off the engine and push the sapling or shrub tofree the blades.WARNING Please observe the following instructions when trimming. Check to ensure that the trimmer blade has been tightened securely in place. Replace the shield if it is damaged or cracked. Replace the trimmer blade nut when it becomes worn. Do not cut into the ground with the blade. Do not operate with a dull, bent, fractured or discoloured blade and worn or damaged nut. Do not run engine at full throttle without a load.Failure to do so could lead to an accident or serious injury. Use only cutting attachments recommended by YAMABIKO CORPORATION. The type of blade used must be matched to the type and size of material cut. An improper or dull blade can causeserious personal injury. Blades must be sharp. Dull blades increase the chance of kick-out and injury to yourself andbystanders. Plastic/Nylon Grass/Weed Blades may be used where ever the nylon line head is used. Do not use this blade forheavy weeds or brush. The 3 cutter blade is designed especially to cut weeds and grass. To avoid injury due to kickback or blade fracture,do not use the 3 cutter blade to cut brush or trees. 8 Tooth Weed/Grass Blade is designed for grass, garden debris and thick weeds. Do not use this blade for brushor heavy woody growth, 19 mm diameter or larger. 22 Tooth Clearing Blade is designed for dense thickets and saplings up to 64 mm diameter. 80 Tooth Brush Blade is designed for cutting brush and woody growth up to 13 mm diameter.Damaged or shattered blades can cause accidents and serious injury.Kickback The phenomenon that occurs if the trimmer blade comes intocontact with a tree, post, rock or other hard object while ro-tating at high speed and reacts by recoiling powerfully andinstantaneously is known as kickback. Causing kickback can result in a loss of control over theproduct and is highly dangerous. In particular, if the front-right quadrant of the trimmer blade(B) strikes a shrub or other such object, the trimmer bladewill cause the product to recoil sharply backwards to theright. To prevent kickback, do not trim from left to right. Be careful to ensure that the trimmer blade does not strike anyhard objects. When trimming, ensure that the object you are cutting meets the portion of the blade 1/3 in from the front edge onthe left-hand side (A).Failure to do so could cause an injury or fatal accident.