Stihl FS 311 Instruction Manual - Page 37
Maintaining the Mowing
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Balancing N After resharpening about 5 times, check the cutting attachment for out-of-balance on a STIHL balancer - see "Special Accessories" - or have it checked by a dealer and rebalanced as necessary - STIHL recommends a STIHL servicing dealer. Maintaining the Mowing Head Placing power tool on the ground N Shut off the engine. N Lay your power tool on its back so that the cutting attachment mounting face is pointing up. Replacing Nylon Line Always check the mowing head for signs of wear before replacing the nylon line. WARNING If there are signs of serious wear, replace the complete mowing head. The nylon mowing line is referred to as "nylon line" or "line" in the following. The mowing head is supplied with illustrated instructions for replacing the nylon line. Keep the instructions for the mowing head in a safe place. N If necessary, remove the mowing head. 002BA406 KN Adjusting Nylon Line English STIHL SuperCut Fresh line is advanced automatically if the remaining line is at least 6 cm (2 1/2 in) long. The blade on the deflector trims overlong lines to the correct length. STIHL AutoCut N With the engine running, hold the rotating mowing head above the grass surface. N Tap it on the ground once - fresh line is advanced and the blade on the deflector trims it to the right length. Fresh line is advanced every time the mowing head is tapped on the ground. For this reason observe the mowing head's cutting performance during operation. If the mowing head is tapped on the ground too often, the line limiter blade will unnecessarily cut off unused lengths of nylon line. Line feed operates only if both lines are still at least 2.5 cm (1 in) long. STIHL TrimCut WARNING To reduce the risk of injury, always shut off the engine before adjusting the nylon line by hand. N Pull the spool up - rotate it about 1/6 turn counterclockwise until it engages - and allow it to spring back. N Pull ends of the lines outward. FS 311 35