Sharpening Metal Cutting Blades; Maintaining The Mowing Head - Stihl FS 510 C Instruction Manual

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Sharpening Metal Cutting
Blades
Use a sharpening file (special
N
accessory) to sharpen dull cutting
attachments. In case of more
serious wear or nicks: Resharpen
with a grinder or have the work done
by a dealer – STIHL recommends a
STIHL servicing dealer.
Resharpen frequently, take away as
N
little material as possible: two or
three strokes of the file are usually
enough.
1 1
2
2
Resharpen the cutters (1) uniformly
N
– do not alter the contour or the
parent blade (2) in any way.
See cutting attachment packaging for
additional sharpening instructions.
Balancing
After resharpening about 5 times,
N
check the cutting attachment for
out-of-balance on a STIHL balancer
(special accessory) or have it
checked by a dealer and re-
balanced as necessary – STIHL
recommends a STIHL servicing
dealer.
40
Maintaining the Mowing
Head
Placing power tool on the ground
Shut off the engine.
N
1
Lay your power tool on its back so
N
that the cutting attachment
mounting face is pointing up.
2
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.
If necessary, remove the mowing
N
head.
Adjusting Nylon Line
STIHL AutoCut
With the engine running, hold the
N
rotating mowing head above the
grass surface.
Tap it on the ground once – fresh
N
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.
Pull the spool up – rotate it about 1/6
N
turn counterclockwise until it
engages – and allow it to spring
back.
Pull ends of the lines outward.
N
Repeat the above procedure as
necessary until both lines reach the
limiter blade on the deflector.
Rotating the spool from one stop to the
next advances about 4 cm (1 1/2 in) of
fresh line.
FS 510 C, FS 560 C