
MS 461
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
Engine
STIHL single cylinder two-stroke engine
Ignition system
Electronic magneto ignition
Fuel system
All position diaphragm carburettor with
integral fuel pump
Chain lubrication
Fully automatic, speed-controlled oil
pump with reciprocating piston-
additional manual oil flow control
Weight
dry, without bar and chain
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.
Rollomatic ES/ES Light guide bars
Actual cutting length will be less than
listed bar length.
Rollomatic ES/ES Light guide bars –
MS 461 with loop handle
Actual cutting length will be less than
listed bar length.
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Displacement: 4.67 cu. in.
(76.5 cm
3
)
Cylinder bore: 2.05 in. (52 mm)
Stroke: 1.42 in. (36 mm)
Engine power
according to
ISO 7293:
6.0 hp (4.5 kW) at
9,800 rpm
Idle speed: 2,500 rpm
Maximum speed
with bar and chain: 13,500 rpm
Spark plug
(suppressed):
Bosch WSR 6 F,
NGK BPMR 7 A
Electrode gap: 0.02 in. (0.5 mm)
Fuel tank capacity: 27.1 fl.oz (0.8 l)
Oil tank capacity: 11.0 fl.oz (0.325 l)
MS 461: 14.8 lbs. (6.7 kg)
MS 461 with handle
and carburettor
heating: 15.0 lbs. (6.8 kg)
MS 461 with loop
handle: 15.7 lbs. (7.1 kg)
Reduced kickback STIHL guide bars
(with green label)
Bar lengths: 45, 50, 63, 71, 75 cm
(18, 20, 25, 28, 30 in.)
Pitch: 3/8" (9.32 mm)
Groove width: 1.3 mm (0.050 in) or
1.6 mm (0.063 in.)
Sprocket nose: 10-tooth for cutting
lengths 45, 50 cm (18,
20 in.), 11-tooth for cut-
ting lengths 63, 71,
75 cm (25, 28, 30 in.)
Reduced kickback STIHL guide bars
(with green label)
Bar lengths: 63, 71 cm (25, 28 in.)
Pitch: 3/8" (9.32 mm)
Groove width: 1.3 mm (0.050 in) or
1.6 mm (0.063 in.)
Sprocket nose: 11-tooth
Reduced kickback STIHL guide bars
(with green label)
Bar lengths: 63, 71, 75, 80, 90 cm
(25, 28, 30, 32, 36 in.)
Pitch: 3/8" (9.32 mm)
Groove width: 1.3 mm (0.050 in) or
1.6 mm (0.063 in.)
Sprocket nose: 11-tooth
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