Stihl TS 500i Instruction Manual - Page 20

English 16. Release the pressure on the cut-off machine as you reach the end of the cut. Too much pressure may cause the operator to lose control of the cut-off machine when the abrasive wheel completes the cut. The abrasive wheel may contact the operator or strike some foreign object and shatter. 17. Use extreme caution when reentering a cut and do not twist the wheel in the cut, turn it at an angle or jam it into the cut as this may result in a binding or pinching of the wheel. Gyroscopic Forces Be alert for gyroscopic forces that are caused by the rapid spinning of the cutoff wheel. These forces result in opposition to directional change, e.g., when the operator attempts to move the machine in a sideways direction, and can result in loss of control. Maintenance, Repair and Storage of the Cut-Off Machine Never operate a cut-off machine that is damaged, improperly adjusted or not completely or properly assembled. Follow the maintenance and repair instructions in the appropriate sections of this instruction manual. WARNING STIHL recommends the use of only STIHL replacement parts for maintenance and repair. Use of parts manufactured by others may be extremely dangerous and could result in serious or fatal injury. WARNING Always shut off the machine and make sure that the wheel is stopped before doing any maintenance or repair work or cleaning the cut-off machine. When the machine is shut off, the wheel continues to rotate for a few seconds. Do not attempt any maintenance or repair work not described in this manual as appropriate for users. STIHL recommends that you have all other work performed at your authorized STIHL servicing dealer. Clean off dust and other cutting debris after finishing work. Check and, if necessary, tighten all nuts, bolts and screws after each use. Do not clean your machine with a pressure washer. The solid jet of water may damage the machine or its components. WARNING Never test the ignition system with the spark plug boot removed from the spark plug or with an unseated spark plug, since uncontained sparking may cause a fire. WARNING To reduce the risk of fire and burn injury or property damage, use only spark plugs authorized by STIHL. Always press the spark plug boot snugly onto the spark plug terminal of the proper size. A loose connection between the spark plug terminal and the ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire. Keep the spark plug clean, and make sure the ignition lead is in good condition. Do not use a spark plug with a detachable SAE adapter terminal. Arcing may occur that could ignite combustible fumes and cause a fire. This can result in serious injuries or damage to property. WARNING Do not operate your cut-off machine if the muffler is damaged, missing or modified. An improperly maintained muffler will increase the risk of fire and hearing loss. Never touch a hot muffler or spill fuel or other flammable liquid over it. Your muffler is equipped with a spark-arresting screen to reduce the risk of fire. Never operate your cut-off machine if the screen is missing or damaged. WARNING Operation of this equipment may create sparks that can start fires around dry vegetation. A spark arrester is required. The operator should contact local fire agencies for laws or regulations relating to fire prevention requirements. In California, it is a violation of § 4442 or § 4443 of the Public Resources Code to use or operate gasoline-powered tools on forest-covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a complying spark arrester that is maintained in effective working order. The owner/operator of this product is responsible for properly maintaining the spark arrester. Other states or governmental entities/agencies, such as the U.S. Forest Service, may have similar or additional requirements. 18 TS 480i, TS 500i