English
MS 391
Weight
Specifications
Displacement:
3.90 cu. in.
3
(64.1
cm )
dry, without bar and chain
EPA / CEPA
Bore:
1.93 in. (49 mm)
1.34 in. (34 mm)
MS 311:
MS 391:
14.1 lbs. (6.4 kg)
14.1 lbs. (6.4 kg)
Stroke:
The Emission Compliance Period
referred to on the Emissions
Engine power to
ISO 7293:
4.4 hp (3.3 kW)
at 9500 rpm
Cutting attachment
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Idle speed:
2800 rpm
Maximum permissible
speed with bar and
chain:
Recommended cutting attachments in
compliance with Sec. 5.11 of ANSI
standard B 175.1-2000
13000 rpm
Category
Observe the information about ANSI
standard B 175.1-2000 as well as the
definition "low-kickback saw chain" in
the section "Safety Precautions and
Working Techniques".
Ignition system
A = 300 hours
B = 125 hours
C = 50 hours
Electronic magneto ignition
Spark plug
NGK BPMR 7 A,
Engine
(suppressed):
Bosch WSR 6 F
Rollomatic E guide bars
Electrode gap:
0.02 in. (0.5 mm)
STIHL reduced kickback guide bars
(with green label)
STIHL single cylinder two-stroke engine
Fuel system
Bar lengths:
16, 18, 20 in. (40, 45,
MS 311
50
cm)
All position diaphragm carburetor with
integral fuel pump
Displacement:
3.60 cu. in.
(59.0
Pitch:
3/8" (9.32 mm)
3)
cm
Groove width:
0.050 in. (1.3 mm) or
0.063 in. (1.6 mm)
Bore:
1.85 in. (47 mm)
1.34 in. (34 mm)
Fuel tank capacity: 20.3 oz (0.60 l)
Stroke:
Sprocket nose: 10- or 11-tooth
Chain lubrication
Engine power to
ISO 7293:
4.2 hp (3.1 kW)
at 9500 rpm
Saw chains 3/8"
Idle speed:
2800 rpm
Fully automatic, speed-controlled oil
pump with reciprocating piston –
additional manual oil flow control
STIHL reduced kickback saw chains
(with green label)
Maximum permissible
speed with bar and
chain:
Rapid Micro Comfort 3 (33 RMC3)
Rapid Micro Comfort 3 (36 RMC3)
Rapid Super Comfort 3 (33 RSC3)
Rapid Super Comfort 3 (36 RSC3)
13000 rpm
Oil tank capacity:
11.8 oz (0.350 l)
Pitch:
3/8" (9.32 mm)
Drive link gauge: 0.050 in. (1.3 mm) or
in. (1.6 mm)
0.063
MS 311, MS 391
51
| Categories | Chainsaw Manuals, STIHL Chainsaw Manuals |
|---|---|
| Tags | STIHL MS 311, STIHL MS 391 |
| Download File |
|
| Language | English, Español |
| Product Brand | STIHL. Stihl Inc, USA - Corporate phone: (757) 486-9100. International Support Information: http://stihl.com Email: info@stihl.com, Chainsaw |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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