Maintenance And Repairs - Stihl FS 40 Instruction Manual

FS 40, FS 40 C
Displacement: 1.66 cu. in
(27.2 cc)
Bore: 1.34 in (34 mm)
Stroke: 1.18 in (30 mm)
Engine power to 0.9 HP (0.7 kW)
ISO 8893: at 8,500 rpm
Idle speed: 2,800 rpm
Cut-off speed (rated): 10,000 rpm
Max. output shaft
speed (cutting
attachment): 10,600 rpm
FS 50, FS 50 C
Displacement: 1.66 cu. in
(27.2 cc)
Bore: 1.34 in (34 mm)
Stroke: 1.18 in (30 mm)
Engine power to 1.1 HP (0.8 kW)
ISO 8893 at 8,500 rpm
Idle speed: 2,800 rpm
Cut-off speed (rated): 10,000 rpm
Max. output shaft
speed (cutting
attachment): 10,600 rpm
Ignition System
Electronic magneto ignition
Spark plug (resistor
type): NGK CMR 6 H
Electrode gap: 0.02 in (0.5 mm)
Fuel System
All position diaphragm carburetor with
integral fuel pump
FS 40, FS 40 C, FS 50, FS 50 C
Fuel tank capacity: 11.5 fl.oz (0.34 l)
Weight
Dry, without cutting attachment and
deflector
Standard version
FS 40: 9.7 lbs
(4.4 kg)
FS 50: 9.7 lbs
(4.4 kg)
FS 50: with long 9.9 lbs
shaft (4.5 kg)
Versions with Easy2Start
FS 40 C: 9.9 lbs
(4.5 kg)
FS 50 C: 9.9 lbs
(4.5 kg)
FS 50 C: with long 10.1 lbs
shaft (4.6 kg)
Overall length
without cutting attachment
FS 40,
FS 40 C: 57 in (1450 mm)
FS 50,
FS 50 C: 57 in (1450 mm)
FS 50, with long
FS 50 C: shaft 65 in (1650 mm)

Maintenance and Repairs

Users of this unit should carry out only
the maintenance operations described
in this manual. STIHL recommends that
other repair work be performed only by
authorized STIHL servicing dealers.
Warranty claims following repairs can be
accepted only if the repair has been
performed by an authorized STIHL
servicing dealer using genuine STIHL
replacement parts.
Genuine STIHL parts can be identified
by the STIHL part number, the
{ logo and, in some cases, by
the STIHL parts symbol K. The
symbol may appear alone on small
parts.
English
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