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Stihl FS 56 Service Manual

Stihl FS 56
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20 Series 4144 Components FC, FS, KM
5.9 Short Circuit Wire
5.9.1 Testing
If the spark plug, ignition lead and
spark plug boot are in order, check
the short circuit wire.
Remove the shroud, b 5.1
: Disconnect the short circuit wire
(1).
Connect the ohmmeter to ground
(arrow) and the short circuit wire
(1).
Set the stop switch to "
0" and
hold it in that position.
The resistance measured must be
about 0 Ω. If it is much higher, the
reason may be the stop switch or
the wire. Damaged parts must be
replaced, b 5.9.2, b 5.9.3.
Release the stop switch.
The resistance measured must be
infinitely high. If not, fit a new short
circuit wire or stop switch, b 5.9.2,
b 5.9.3.
545RA057 TG
1
To locate the fault, test the wires for
continuity and check insulation for
damage. If the wires are in order,
check operation of stop switch,
b 5.10
If no fault can be found, check the
ignition system with the aid of the
troubleshooting chart, b 5.10.
Check ground wire for continuity.
Reassemble in the reverse
sequence.
5.9.2 Removing and Installing
(Loop Handle Version)
Separate short circuit (black) and
ground (blue) wires are installed in
these machines and may be
replaced individually in case of
damage.
Remove the drive tube, b 9.1
Remove the shroud, b 5.1
: Pull boot (1) off the spark plug.
545RA008 TG
1
: Disconnect the short circuit wire
(1) and ground wire (2).
Pull the short circuit wire out of
the guide (arrow).
Press down the interlock lever to
disengage it from the throttle
trigger.
: Pull out the support (1).
: Take the short circuit wire (1)
and ground wire (2) out of the
guide (arrow).
545RA058 TG
1 2
1
545RA059 TG545RA060 TG
1
2

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Stihl FS 56 Specifications

FS 56

Power IconPower
engine power0.8 kW (1.1 hp)
max output shaft speed8600 rpm
idle speed2800 rpm
Engine Specifications IconEngine Specifications
displacement27.2 cm³
cylinder bore34 mm
piston stroke30 mm
Fuel System IconFuel System
fuel tank capacity340 cm³ (0.34 l)
carburetor typeAll-position diaphragm carburetor with integral fuel pump
Noise and Vibration Data IconNoise and Vibration Data
sound pressure level with mowing head93 dB(A)
sound pressure level with metal tool94 dB(A)
sound power level107 dB(A)
Ignition System IconIgnition System
spark plugNGK CMR 6 H, BOSCH USR 4AC
electrode gap0.5 mm
ignition typeElectronic magneto ignition
Weight and Dimensions IconWeight and Dimensions
weight5.1 kg

FS 56 R

Noise and Vibration Data IconNoise and Vibration Data
sound pressure level with mowing head93 dB(A)
sound pressure level with metal tool94 dB(A)
sound power level107 dB(A)
Weight and Dimensions IconWeight and Dimensions
weight4.7 kg

FS 56 C

Noise and Vibration Data IconNoise and Vibration Data
sound pressure level with mowing head93 dB(A)
sound pressure level with metal tool94 dB(A)
sound power level107 dB(A)
Weight and Dimensions IconWeight and Dimensions
weight5.2 kg

FS 56 RC

Noise and Vibration Data IconNoise and Vibration Data
sound pressure level with mowing head93 dB(A)
sound pressure level with metal tool94 dB(A)
sound power level107 dB(A)
Weight and Dimensions IconWeight and Dimensions
weight4.8 kg

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