Stihl Fs 460 Cm Manual

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
39 If engine running behavior is still 
unsatisfactory after servicing the air filter 
and adjusting the throttle cable, the 
cause may be the muffler.
H av e t he  m uf fle r  c hec k ed  by  a  s er v ic in g 
dealer for contamination 
(carbonization).
STIHL recommends that you have 
servicing and repair work carried out 
exclusively by an authorized STIHL 
servicing dealer.If the machine is to remain out of use for 
approx. 3 months or more...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
40
Balancing
NAfter resharpening about 5 times, 
check the cutting attachment for 
out-of-balance on a STIHL balancer 
– see “Special Accessories” – or 
have it checked by a dealer and re-
balanced as necessary – STIHL 
recommends a STIHL servicing 
dealer.
Placing power tool on the ground
NShut off the engine.
NLay your power tool on its back so 
that the cutting attachment 
mounting face is pointing up.
Replacing Nylon Line
Always check the...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
41 Repeat the above procedure as 
necessary until both lines reach the 
limiter blade on the deflector.
Rotating the spool from one stop to the 
next advances about4 cm (1 1/2 in) of 
fresh line.
Replacing Nylon Line
STIHL PolyCut
Precut lengths of nylon line can be fitted 
to the PolyCut in place of the cutting 
blades.
STIHL DuroCut, STIHL PolyCut
WARNING
To reduce the risk of injury, always shut 
off the engine before refilling the mowing...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
42 NThoroughly clean the clamp area of 
the handlebar with the cloth and 
cleaning solution.
NLine up the handlebar and secure it 
in position with the wing screw.
Handlebar cannot be clamped firmly in 
position
NRelease handlebar in clamp as 
described under "Handlebar is 
difficult to move".
NDegrease clamp area on handlebar 
and in clamp moldings.
NLine up the handlebar and secure it 
in position with the wing screw.
Maintenance Work...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
43
Antivibration elements
Four antivibration elements (arrows) are 
installed between the powerhead and 
the drive tube. Have the system checked 
if there is a noticeable increase in 
vibrations.
Both vibration gaps (arrows) are preset 
to the same width at the factory. If the 
size of the two vibration gaps varies 
greatly and/or one of them closes up, 
have your servicing dealer repair the 
antivibration system. 
Wear Guard on AV Housing
There...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
44
Maintenance and Care
The following intervals apply to normal operating conditions only. If your daily work-
ing time is longer or operating conditions are difficult (very dusty work area, etc.), 
shorten the specified intervals accordingly.
before starting work
after finishing work or daily
after each refueling stop
weekly
monthly
every 12 months
if problem
if damaged
as required
Complete machineVisual inspection (condition, leaks)XX
CleanX...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
45
Spark arrestor in mufflerCheck2)X
Clean or replace
2)X
SpacerCheckX
Replace
2)XX
Exhaust portDecoke after first 139 hours of opera-
tion, then every 150 hours of operationX
All accessible screws and nuts (not adjust-
ing screws) 
3)RetightenX
Antivibration elementsCheck
4)XX
Replace
2)X
Cutting attachmentVisual inspectionXX
ReplaceX
Check tightnessXX
Metal cutting attachment SharpenXX
Safety labels ReplaceX
1)Only if there is a noticeable loss...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
461Fuel Filler Cap
2Starter Grip
3Shutter
4Spark Plug Boot
5Muffler with Spark Arresting Screen
6Guard Plate
7Throttle Trigger
8Momentary Stop Switch
9Throttle Trigger Lockout
10Handlebar
11Handle Support
12Clamp Screw
13Carrying Strip
14Choke Lever
15Manual Fuel Pump
16Filter Cover
17Fuel Tank
18Handle Heating Switch (Special 
Option)
19Wear Guard
20Spacer
#Serial Number
Main Parts
20
20
19
1
4
3
1
2
6
5
1210
17
14
16
7
8
9
1311
#
15
3BA036 KN...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
47
Definitions
1 Fuel Filler Cap
For closing the fuel tank.
2 Starter Grip
The grip of the pull starter, for 
starting the engine.
3Shutter
With summer and winter positions. 
Carburetor is heated in winter 
position.
4 Spark Plug Boot
Connects the spark plug with the 
ignition lead.
5 Muffler with Spark Arresting Screen
Muffler reduces exhaust noises and 
diverts exhaust gases away from 
operator.
Spark arresting screen is designed 
to reduce the...

FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
48 6Circular Saw Blade
7Limit Stop for Circular Saw Blade
Definitions
6 Circular Saw Blade
Cutting attachment made of metal 
for cutting wood.
7 Limit Stop for Circular Saw Blade
Designed to position the brushcutter 
steady against the wood in order to 
reduce the risk of injury from loss of 
control from reactive forces such as 
thrust out.
EPA / CEPA
The Emission Compliance Period 
referred to on the Emissions 
Compliance Label indicates the...