Instruction Manual

MS 461 R
English
61
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 carburetor with
integral fuel pump
Chain Lubrication
Fully automatic, speed-controlled
reciprocating oil pump. 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"):
Rescue missions
In rescue missions, use only the chains
expressly approved by STIHL for such
applications, e.g., the Rapid Duro
Rescue (36RDR).
For rescue missions with the
aforementioned saw chain, STIHL
recommends the following guide bar:
Rollomatic "S" with sprocket nose (11-
tooth) 50cm (20in.)
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.
Saw chain 3/8"
Specifications
A= 300hours
B= 125hours
C= 50hours
Displacement: 4.67cu.in 76.5cc
Bore: 2.05in (52mm)
Stroke: 1.42in (36mm)
Engine power to
ISO7293:
6.0bhp (4.5kW)
at 9,800rpm
Idle speed: 2,500rpm
Max. permissible
speed (with cutting
attachment): 13,000rpm
Spark plug (resistor
type):
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)
dry, without bar and
chain 15.4 lbs (7.0kg)
Depth limiter (spe-
cial accessory) 2.56lbs (1.16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,
63cm (25, 28, 30in.)
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
Low kickback STIHL saw chain (with
green label)
Rapid Super 3 (33 RS3) Type 3624
Pitch: 3/8" (9.32mm)
Drive link gauge: 1.3mm (0.050in)