Stihl MS 461 - Chain Tensioner

23MS 461, MS 461-R
Installing
– Before installing the new pin, coat
its knurled shank with
threadlocking adhesive, b 15
: Position the new pin in the bore
(arrow) so that the knurling on the
pin meshes with the existing
knurling in the bore.
Turn pin back and forth as
necessary.
The pins must be driven home
squarely.
: Drive home the pins (1 and 2) as
specified below.
5902RA075 TG
3443RA054 TG
1
2
: Pin (1) a = about 2.9 - 3.3 mm
Pin (2) b = about 4.3 - 4.7 mm
: Drive home the pins (3, 4 and 5)
as specified below.
: Pin (3) a = about 10.3 - 10.5 mm
Pin (4) b = about 4.6 - 4.8 mm
Pin (5) c = about 5.1 - 5.3 mm
– Lubricate the brake lever and
cam lever with STIHL grease,
b 15
– Reassemble all other parts in the
reverse sequence.
a
b
0001RA061 TG
1
2
3443RA055 TG
4
5
3
a
c
b
3
4
5
0001RA063 TG
5.6 Chain Tensioner
– Troubleshooting, b 3.2
– Remove the side plate, b 5.2
: Turn the spur gear (1) clockwise
until the tensioner slide (2) butts
against the right-hand end and
the screw (3) is visible.
: Take out the screw (3).
: Pull out the cover plate (4) with
spur gear and retainer.
: Take out the tensioner slide (2)
with adjusting screw.
– Remove the O-ring.
– Check individual parts of chain
tensioner, replace if necessary
3443RA057 TG
4
3
2
1