Stihl FS 55 R Product Instruction Manual - Page 15

Warning! To reduce the risk of serious injury, never use wire or metal-reinforced line or other material in place of the nylon cutting lines. Pieces of wire could break off and be thrown at high speed toward the operator or bystanders. STIHL SuperCut mowing head Fresh line is advanced automatically. Frayed line is replaced by a simple adjustment (see instruction sheet supplied with mowing head). STIHL AutoCut mowing head Nylon cutting line advances automatically when tapped against the ground (TapAction). STIHL TrimCut mowing head Frayed line is replaced by a simple adjustment (see instruction sheet supplied with mowing head). STIHL PolyCut mowing head Uses either nylon lines or nonrigid, pivoting polymer blades. 002BA177 KN 002BA135 KN Warning! Three rectangular wear limit marks are applied to the base (periphery) of the PolyCut. To reduce the risk of serious injury from breakage of the head or blades, the PolyCut must not be used when it has worn as far as one of these marks. It is important to follow the maintenance instructions supplied with the head. English may otherwise shatter and flying objects could result in injury to the operator or bystanders. Install a new mowing head. Risk of Kickout (Blade Thrust) with All Rigid Cutting Blades Warning! If the wear limit marks are ignored, there is a risk of the cutting attachment shattering and flying parts injuring the operator or bystanders. To reduce the risk of accidents from shattered blades, avoid contact with stones, metal and similar solid objects. Check PolyCut blades for cracks at regular intervals. If a crack is found on one blade, always replace all blades. STIHL FixCut mowing head Uses pre-cut lengths of nylon line. Observe wear indicators. Warning! Kickout (blade thrust) is the sudden and uncontrolled motion towards the operator's right or rear that can occur when the shaded area (especially the darkly shaded area) of a rotating blade comes in contact with a solid rigid object like a tree, rock, bush or wall. The rapid counterclockwise rotation of the blade may be stopped or slowed, and the cutting attachment may be thrown to the right or to the rear. This kickout (blade thrust) may cause loss of control of the power tool and may result in serious or fatal injury to the operator or bystanders. To reduce the risk of injury, extreme caution should be used when cutting with the shaded area of any rigid blade. Do not continue using the mowing head if the raised moldings (1) on the base are missing or worn - see right illustration above. The mowing head FS 55, FS 55 C, FS 55 R, FS 55 RC 13