Stihl MS 261 User Manual

121MS 261, MS 261 C
The lug must engage the
seat (arrow).
: Use the ends of the string (2) to
pull the manifold flange (1)
through the intake opening while
pushing the carburetor carrier (3)
against the manifold flange.
– Remove the string.
: Position the carburetor carrier (1)
so that the semi-circles (arrows)
locate against the studs (2).
5902RA422 TG5902RA423 TG
3
1
2
5902RA424 TG
2
2
1
: Push the throttle rod (1) into the
guide (arrow) until it snaps into
position.
: Push the washer (1) into position.
When reassembling, check that all
wires are properly seated in their
guides.
When the filter base is installed, the
fuel hose must be centered in the
opening in the lower air guide
shroud. If it touches one side of the
opening, install it properly,
b
b
12.11.2,
b
12.8.
– Reassemble all other parts in the
reverse sequence.
5902RA425 TG
1
5902RA426 TG
1
12.9 Intake Manifold
A damaged intake manifold can
result in engine running problems.
– Troubleshooting, b
b
3.6 or
b
3.7
– Remove the shroud,
b
6.4
– Remove the carburetor,
b
12.5
– Remove the carburetor carrier,
b
12.8
– Remove the air guide shrouds,
b
12.4
Models with heating,
b
12.4.2
Models with manual fuel pump,
b
12.4.1
: Take out the screws (1).
: Remove the intake manifold (2).
– Inspect the intake manifold (2)
and replace it if necessary – even
very minor damage can result in
engine running problems,
b
3.7
5902RA427 TG
2
1
1
1

Stihl MS 261 Specifications

General

Motor type	2-stroke motor
Chain gauge	1.6 mm
Chain pitch	3/8 \
Blade length	400 mm
Automatic oiling	Yes
Oil tank capacity	0.27 L
Fuel tank capacity	0.5 L
Engine displacement	50.2 cm³
Engine power	3.8 hp
Power source	Gasoline

Weight and Dimensions

Weight	5200 g