Stihl FS 75 Instruction Manual - Page 14
USING THE CUTTING TOOLS, Using the mowing heads, Warning, STIHL AutoCut mowing head, Important
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English / USA USING THE CUTTING TOOLS For an illustration of the various cutting tools and instructions on proper mounting see the chapter on "mounting the cutting head" in your owner's manual. Using the mowing heads The STIHL AutoCut and PolyCut mowing heads produce a clean and tidy finish. They are to be used only on trimmers equipped with a limiter blade in the deflector in order to keep the line at the proper length (see "Parts and Controls" chapter of this manual). 000BA019 KN 002BA177 KN If the lawn edges are planted with trees or bordered by a fence etc., it is best to use a nylon line head. It achieves a "softer" cut with less risk of damaging tree bark etc. than with the polymer blades. However, the polymer bladed STIHL "PolyCut" produces a better cut if there are no plants along the edge of the lawn. Sharpening is not necessary and worn cutting blades are easily replaced. !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 "AutoCut" mowing head Nylon cutting cord advances automatically when tapped against the ground. STIHL "PolyCut" mowing head Uses either nylon lines or nonrigid plastic blades Important! Three rectangular wear limit marks are applied to the base (periphery) of the Polycut 10-3. 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! FS 75 13