Inspection And Maintenance By User; Inspections And Maintenance By Dealer - Stihl FS 120 Instruction Manual

27 Inspection and Maintenance by User

on the ground too often, the line limiting 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 turn
counterclockwise until it engages – and allow it
to spring back.
► Pull ends of the lines outward.
Repeat the above procedure as necessary until
both lines reach the limiter blade on the deflec‐
tor.
Rotating the spool from one stop to the next
advances about 4 cm (1 1/2 in) of fresh line.
26.4 Replacing Nylon Line
STIHL PolyCut
Precut lengths of nylon line can be fitted to the
PolyCut in place of the cutting blades.
STIHL DuroCut, STIHL PolyCut
WARNING
To reduce the risk of injury, always shut off the
engine before refilling the mowing head.
► Fit precut lengths of nylon line in the mowing
head as described in the instructions supplied.
26.5 Replacing Cutting Blades
26.5.1 STIHL PolyCut
Always check the mowing head for signs of wear
before installing new cutting blades.
WARNING
If there are signs of serious wear, replace the
complete mowing head.
The thermoplastic cutting blades are referred to
as "blades" in the following.
The mowing head is supplied with illustrated
instructions for replacing the blades. Keep the
instructions for the mowing head in a safe place.
0458-250-0121-F
WARNING
To reduce the risk of injury, always shut off the
engine before installing the blades.
► Remove the mowing head.
► Replace blades as shown in the illustrated
instructions.
► Mount the mowing head on the machine.
27 Inspection and Mainte‐
nance by User
27.1 Changing the Fuel Pickup Body
Change the fuel pickup body every year:
► Drain the fuel tank.
► Use a hook to pull the fuel pickup body out of
the tank and take it off the hose.
► Push the new pickup body into the hose.
► Place the pickup body in the tank.
28 Inspections and Mainte‐
nance by Dealer
28.1 Maintenance Work
STIHL recommends that you have servicing and
repair work carried out exclusively by an author‐
ized STIHL servicing dealer.
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