Specifications - Stihl MS 171 Instruction Manual

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Specifications

EPA / CEPA
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category
A = 300 hours
B = 125 hours
C = 50 hours
CARB
The Emission Compliance Period used
on the CARB-Air Index Label indicates
the terms:
Extended = 300 hours
Intermediate = 125 hours
Moderate = 50 hours
Engine
STIHL single cylinder two-stroke engine
58
MS 171
Displacement: 1.94 cu. in.
(31.8 cm
Bore: 1.6 in. (38 mm)
Stroke: 1.1 in. (28 mm)
Engine power to 1.7 hp (1.3 kW) at
ISO 7293: 10,000 rpm
Idle speed: 2,800 rpm
Maximum permissi-
ble speed with bar
and chain: 13,500 rpm
MS 181, MS 181 C
Displacement: 1.94 cu. in.
(31.8 cm
Bore: 1.6 in. (38 mm)
Stroke: 1.1 in. (28 mm)
Engine power to 2.0 hp (1.5 kW) at
ISO 7293: 10,000 rpm
Idle speed: 2,800 rpm
Maximum permissi-
ble speed with bar
and chain: 13,500 rpm
MS 211, MS 211 C
Displacement: 2.15 cu. in.
(35.2 cm
Bore: 1.7 in. (40 mm)
Stroke: 1.1 in. (28 mm)
Engine power to 2.3 hp (1.7 kW)
ISO 7293: at 10,000 rpm
Idle speed: 2,800 rpm
Maximum permissi-
ble speed with bar
and chain: 13,500 rpm
Ignition system
Electronic magneto ignition
3)
(breakerless)
Spark plug
(suppressed):
Electrode gap:
Fuel system
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
3)
Chain lubrication
Fully automatic, speed-controlled oil
pump with rotary piston
Oil tank capacity:
Weight
dry, without bar and chain
MS 171:
3)
MS 181:
MS 181 C:
MS 211:
MS 211 C:
Cutting Attachments
Recommended cutting attachments
conforming with the 45 degree
computed kickback angle requirement
of Section 5.11 of
ANSI/OPEI B175.1-2012 when used on
MS 171, MS 181, MS 181 C, MS 211, MS 211 C
NGK CMR6H
Bosch USR4AC
0.02 in. (0.5 mm)
9.1 fl.oz (0.27 l)
9.0 fl.oz (0.265 l)
9.5 lbs. (4.3 kg)
9.5 lbs. (4.3 kg)
10.1 lbs. (4.6 kg)
9.5 lbs. (4.3 kg)
10.1 lbs. (4.6 kg)