Front Chain Tensioner; Quick Chain - Stihl MS 240 Instruction Manual

2
6
5
: Inspect the thrust pad (1),
adjusting screw (2), tensioner
slide (3), cover plate (4), spur
gear (5) and O-ring (6) and
replace as necessary.
: Fit the O-ring in the spur gear
recess (arrow).
– Clean all disassembled parts with
a little standard commercial
solvent-based degreasant
containing no chlorinated or
halogenated hydrocarbons.
Always replace the adjusting screw
and spur gear as a matching pair.
– Lubricate the threads, gears and
O-ring with STIHL multipurpose
grease, b 17
– Reassemble in the reverse
sequence.
MS 240, MS 260, MS 260 C
7.6.1

Front Chain Tensioner

3
– Remove the sprocket cover and
cutting attachment, b 5
1
– Troubleshooting, b 4.2
4
– Remove the side plate, b 7.2
: Turn the adjusting screw (1)
clockwise until the tensioner slide
(2) butts against the right-hand
end and the screw (arrow) is
visible.
: Pull out the tensioner slide (2)
with thrust pad (3).
: Pull off the thrust pad (1) and
unscrew the adjusting screw (2)
from the tensioner slide (3).
– Check the individual parts and
1
replace if necessary.
– Reassemble in the reverse
sequence.
2 3
– Clean all disassembled parts with
a little standard commercial
solvent-based degreasant
containing no chlorinated or
halogenated hydrocarbons.
– Lubricate thread with STIHL
multipurpose grease, b 17
– Reassemble all other parts in the
reverse sequence.
7.6.2
The quick chain tensioner is
installed in the chain sprocket cover.
See chapter on cutting attachment,
b 5
2
3
Quick Chain Tensioner
1
29