Specifications - Stihl MS 261 C-M Instruction Manual

Specifications

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
A = 300 hours
B = 125 hours
C = 50 hours
Engine
STIHL single cylinder two-stroke engine
Displacement: 50.2 cm
Bore: 44.7 mm
Stroke: 32 mm
Engine power to 2.9 kW (3.9 HP)
ISO 7293: at 10,000 rpm
Idle speed: 2,800 rpm
Cut-off speed: 14,000 rpm
Ignition System
Electronic (breakerless) magneto
ignition
Spark plug (resistor Bosch WSR 6 F,
type): NGK BPMR 7 A
Electrode gap: 0.5 mm
MS 261 C-M
This spark ignition system meets all
requirements of the Canadian
Interference-Causing Equipment
Regulations ICES-002.
Fuel System
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
Chain Lubrication
Fully automatic, speed-controlled oil
pump with rotary piston. Additional
manual oil flow control
Oil tank capacity:
Weight
3
Weight (dry, without bar and chain):
MS 261 C-M:
MS 261 C-M with handle and
carburetor heating:
Cutting Attachment
STIHL cutting attachments complying
with CSA Standard Z 62.3:
Rollomatic guide bars
Cutting lengths
(.325" pitch)
Groove width:
Nose sprocket:
.325" saw chains
Rapid Micro (26 RM) Type 3629
Rapid Micro 3 (26 RM3) Type 3634
Rapid Super (26 RS) Type 3639
Pitch:
Drive link gauge:
Chain sprocket
7-tooth for .325"
0.50 l
Other cutting attachments
Other cutting attachments complying
with CSA Standard Z 62.3 are available:
see section CSA Standard Z 62.3, the
"Chain Leaflet" inside the chain box or
0.27 l
contact your local STIHL dealer.
Please ask your STIHL dealer to
properly match your powerhead with the
appropriate bar/chain combinations to
reduce the risk of kickback injury.
5.2 kg
5.4 kg
32, 37, 40, 45 cm
1.6 mm
11-tooth
English
.325" (8.25 mm)
1.6 mm
41