English / USA
Specifications
Engine
EPA:
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
STIHL single cylinder two-stroke engine
MS 170
Displacement
1.84 cu.in (30.1 cm
Bore
1.46 in (37 mm)
Stroke
1.10 in (28 mm)
Idle speed
2,800 RPM
MS 180, MS 180 C
Displacement
1.94 cu.in (31.8 cm
Bore
1.50 in (38 mm)
Stroke
1.10 in (28 mm)
Idle speed
2,800 RPM
56
Magneto Ignition System
Electronic (breakerless)
Spark plug (suppressed)
Bosch WSR 6 F or NGK BPMR 7 A
Electrode gap
0.02 in (0.5 mm)
Fuel / Oil System
Diaphragm carburetor
All position with integral fuel pump
Fuel tank capacity
0.53 US pt (0.25 l)
Fuel mixture
See chapter "Fuel"
Air filter
Felt element
Chain lubrication
Fully automatic, speed-controlled rotary
piston oil pump.
Oil tank capacity
3
0.31 US pt (0.145 l)
)
Weight
without bar and chain
MS 170
MS 170 Kat
3
)
MS 180
MS 180 Kat
MS 180 C
Easy2Start
Cutting Attachment
Recommended cutting attachments
for compliance with § 5.11 of ANSI
standard B 175.1-2000
(see page 15 of this manual):
Guide bar
STIHL reduced kickback bar
(with green label) for 3/8" P pitch:
- Picco Micro Mini, groove width
0.04 in (1.1 mm)
- Picco Micro, groove width
0.05 in (1.3 mm)
Rollomatic with sprocket nose
12 or 14 in (30 or 35 cm)
Oilomatic chain
STIHL low kickback chain*
(with green label)
for 3/8" P pitch:
3/8" (9.32 mm) Picco-Micro Mini
(61 PMN)
3/8" (9.32 mm) Picco-Micro 1 (63 PM 1)
Spur sprocket:
6-tooth for 3/8" P pitch
8.60 lbs (3.9 kg)
Since new bar/chain combinations may
9.0 lbs (4.1 kg)
be developed after publication of this
8.60 lbs (3.9 kg)
manual, ask your STIHL dealer for the
9.30 lbs (4.2 kg)
latest recommendations.
9.30 lbs (4,2 kg)
MS 170, MS 180, MS 180 C