Stihl MS 261 User Manual

32 MS 261, MS 261 C
5.7 Chain Tensioner
– Troubleshooting,
b
3.2
– Remove the side plate,
b
5.2
: Turn the spur gear (2) clockwise
until the tensioner slide (1) butts
against the right-hand end and
the screw (3) is visible.
: Take out the screw (1).
– Pull out the cover plate (2) with
spur gear and retainer.
– Remove the O-ring.
5902RA079 TG
2
3
1
5902RA080 TG
2
1
: Take out the tensioner slide (1)
with adjusting screw.
– Inspect the thrust pad (3),
retainer (4), tensioner slide (1),
cover plate (5), spur gear set (2)
and O-ring (6) and replace as
necessary.
: Fit the O-ring in the spur gear
recess (arrow).
– Clean all disassembled parts,
b
b
15
– Lubricate the threads, gears and
O-ring with STIHL multipurpose
grease,
b
15
5902RA081 TG
1
0001RA069 TG
2
6
2
5
4
1
3
5902RA082 TG
– Reassemble in the reverse
sequence.
5.7.1 Quick chain
tensioner
The quick chain tensioner is
installed in the sprocket cover.
: Carefully pry the side (arrow) of
the wing nut (1) out of the
sprocket cover.
– Check the wing nut (1) and
replace if necessary
– Swing the wing nut (1) upright.
: Push the wing nut (1), thin side
first (see arrow), into the opening
and press it down until it snaps
into position.
1
165RA469 TG
1
165RA007 TG

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