Instruction Manual

MS 170, MS 170 C, MS 180, MS 180 C
English
55
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
CARB
The Emission Compliance Period used
on the CARB-Air Index Label indicates
the terms:
Engine
STIHL single cylinder two-stroke engine
MS 170
MS 180, MS 180 C
Ignition System
Electronic (breakerless) magneto
ignition
Fuel System
All position diaphragm carburetor with
integral fuel pump
Chain Lubrication
Fully automatic, speed-controlled oil
pump with rotary piston
Weight
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
this model chain saw (see the chapter
on "Safety Precautions and Working
Techniques"):
Rollomatic E guide bars
Actual cutting length will be less than
listed bar length.
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Extended = 300 hours
Intermediate = 125 hours
Moderate = 50 hours
Displacement: 1.84 cu.in
(30.1 cc)
Bore: 1.45 in 37 mm
Stroke: 1.1 in 28 mm
Engine power to
ISO 7293:
1.7 hp (1.3 kW) at
8,500 rpm
Idle speed: 2,800 rpm
Displacement: 1.94 cu.in 31.8 cc
Bore: 1.50 in 38 mm
Stroke: 1.1 in 28 mm
Engine power to
ISO 7293:
2.0 hp (1.5 kW) at
9,000 rpm
Idle speed: 2,800 rpm
Spark plug (resistor
type):
Bosch WSR 6 F,
NGK BPMR 7 A
Electrode gap: 0.02 in 0.5 mm
Fuel tank capacity: 8.5 fl.oz (0.25 l)
Oil tank capacity: 4.9 fl.oz (0.145 l)
dry, without bar and chain
MS 170: 8.6 lbs
(3.9 kg)
MS 180: 8.6 lbs
(3.9 kg)
MS 180 C with quick chain
adjuster:
8.8 lbs
(4.0 kg)
MS 180 C with quick chain
adjuster and
Easy2Start:
9.3 lbs
(4.2 kg)
Reduced kickback STIHL guide bars
(with green label)
Bar lengths: 30, 35, 40 cm (12, 14,
16 in.)
Pitch: 3/8" P(9.32 mm)
Groove width
(MS 170): 1.1 mm (0.043 in)
Groove width
(MS 180): 1.1 mm (0.043 in)
Sprocket nose: 10-tooth