Before Starting Work; Operating Notes; Assembling The Trimmer / Brushcutter; Mounting The Loop Handle - Stihl Fs 251 R Notice D'emploi

English
Always shut off the engine before storing
the trimmer / brushcutter, and any other
time it is not in use.
■ Use of parts that are not authorized or
approved by STIHL may cause serious or fatal
injury or property damage.
► STIHL recommends that only identical
STIHL replacement parts be used.
■ To reduce the risk of serious or fatal injuries
from a loose or damaged cutting attachment:
► Keep blades sharp.
► Tighten all nuts, bolts and screws after
each use.
► Never attempt to repair damaged cutting
attachments by welding, straightening or
modifying the shape. Always replace a
damaged cutting attachment before use.
■ The gearbox becomes hot during operation.
To reduce the risk of burn injury:
► Allow the gearbox to cool before
inspecting or lubricating and before
changing a cutting attachment or
deflector. Avoid contacting the gear‐
box while it is still hot following oper‐
ation.
■ Improper storage can result in unauthorized
use, damage to the power tool and an
increased risk of fire and other personal injury
or property damage.
► Shut off the engine before storing.
► Store the trimmer / brushcutter indoors in a
dry, secure place that cannot be accessed
by children or other unauthorized users.
7

Before Starting Work

7.1 Preparing the Trimmer / Brush‐
cutter for Operation
Before starting work:
► Mount the carrying ring,
► Mount the loop handle,
► Mount a deflector that is approved for use with
the cutting attachment you intend to use,
8.4.1 and 23.
► Mount an approved mowing head, grass cut‐
ting blade or brush knife,
and 23. Ensure the cutting attachment is
securely mounted and tightened.
► If using a metal cutting attachment, mount the
barrier bar, 8.3.
► Refuel the trimmer / brushcutter,
► Put on and adjust the harness,
► Adjust the loop handle,
► Make sure the trimmer / brushcutter is prop‐
erly balanced, 9.3.
18
8.1.
8.2.
8.5.1 or 8.6.1
10.2.
9.1.
9.2.
► Check the controls for proper function and
condition, 13.1.
7.2

Operating Notes

During break-in period
As all moving parts have to bed in during the
break-in period, the frictional resistances in the
engine are greater during this period.
A factory-new machine should not be run at high
revs (full throttle off load) for the first three tank
fillings. This avoids unnecessary high loads dur‐
ing the break-in period.
The engine develops its maximum power after
about 5 to 15 tank fillings.
8 Assembling the Trimmer /
Brushcutter
8.1 Mounting the Carrying Ring
To mount the carrying ring:
► Shut off the engine,
1
3
2
► Hold the carrying ring (1) against the drive
tube (2) and then push it over the drive tube
into position.
► Line up the carrying ring.
► Insert the nut (4).
► Insert and tighten the screw (3).
The carrying ring need not be removed again.
8.2

Mounting the Loop Handle

WARNING
■ To reduce the risk of injury from loss of con‐
trol, ensure that the loop handle is properly
and securely mounted before starting work.
To mount the loop handle:
► Shut off the engine,
7 Before Starting Work
12.1.
4
12.1.
0458-853-8201-A