Stihl Fs 460 Cm Manual

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
29
Fuel mix ages
Only mix sufficient fuel for a few days 
work, not to exceed 30 days of storage. 
Store in approved fuel-containers only. 
When mixing, pour oil into the container 
first, and then add gasoline. Close the 
container and shake it vigorously by 
hand to ensure proper mixing of the oil 
with the fuel.
Dispose of empty mixing-oil containers 
only at authorized disposal locations.
Preparations
WARNING
When fueling on a slope, always position 
the machine so that the fuel filler cap is 
facing uphill.
NOn level ground, position the 
machine so that the fuel filler cap is 
facing up.
NBefore fueling, clean the fuel filler 
cap and the area around it to ensure 
that no dirt falls into the tank.
Always thoroughly shake the mixture in 
the canister before fueling your 
machine.
WARNING
In order to reduce the risk of fire and 
personal injury from escaping gas vapor 
and fumes, remove the fuel filler cap 
carefully so as to allow any pressure 
build-up in the tank to release slowly.
Opening the fuel filler cap
NTurn the fuel filler cap 
counterclockwise until it can be 
removed from the tank opening.
NRemove the fuel filler cap.
Refueling
Take care not to spill fuel while fueling 
and do not overfill the tank.
Closing the fuel filler cap
NPosition fuel filler cap.
NTurn the fuel filler cap clockwise as 
far as it will go and tighten it as 
securely as possible by hand. Gaso-
lineOil (STIHL 50:1 or equiva-
lent high-quality oils)
US gal. US fl.oz.
12.6
2 1/2 6.4
512.8
Fueling
2709BA025 KN
2709BA003 KN
2709BA004 KN 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
30 Fitting the full harness is described in 
detail in the leaflet supplied with the 
harness.
The type and style of the harness 
depend on the market.
Fitting the Harness
NPut on the full harness (1).
NAdjust the length of the strap so that 
the carabiner (2) is about a hand’s 
width below your right hip.
NAttach the carabiner to the 
machine's perforated rail (3) – see 
“Attaching Machine to Harness”.
NFind the right attachment point for 
the cutting attachment you are 
using – see "Balancing the 
Machine".
Attaching Machine to Harness
NAttach the carabiner (1) to the 
perforated rail (2) on the drive tube.
Disconnecting Machine from Harness
NPress down the bar on the 
carabiner (1) and pull the perforated 
rail (2) out of the carabiner.The machine will balance differently 
depending on the cutting attachment 
mounted.
NLet the machine swing on the 
harness until it stops moving – 
change the connection point if 
necessary
Hanging positions
Mowing heads, grass cutting blades and 
brush knives should rest lightly on the 
ground.
Circular saw blades should "hover" 
approx. 8 in. (20 cm) above the ground.
Fitting the Full Harness
3
002BA411 KN
1
2
2
1
002BA631 KN
1
2
2
1
002BA632 KN
1
2
%aOancinJ tKe MacKine
6BA009 KN
6BA010 KN 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
31 Putting down the machine in an 
emergency
WARNING
As soon as it becomes apparent that a 
dangerous situation is developing, the 
machine must be put down quickly. 
Practice setting down the machine 
quickly. In order to avoid damage, when 
practicing, do not throw the machine on 
the ground.Controls
1Throttle trigger lockout
2Throttle trigger
3Stop switch with Run and Stop 
positions. Press the momentary 
contact stop switch to switch off the 
ignition.
Function of stop switch and ignition 
system
The stop switch is normally in the Run 
position, i.e. when it is not depressed: 
The ignition is switched on – the engine 
is ready to start. Operate the stop switch 
to switch off the ignition. The ignition is 
switched on again automatically after 
the engine stops.Symbols on choke knob
Run positionF – a hot engine is started 
in this position or the engine runs in this 
position.
Start position} – a cold engine is 
started in this position.
Starting the Engine
NPress the manual fuel pump 
bulb (4) at least five times – even if 
the bulb is filled with fuel.
Starting / Stopping the 
Engine
1
002BA483 KN
2
3
FS 490
0000-GXX-0832-A0
FS 460FS 360, 410, 460
4
0000-GXX-0833-A0
FS 360, 410, 460
4
2709BA015 KN
FS 490 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
32 The choke knob is in the normal run 
positionF.
NIf the engine is cold: Depress in the 
outer edge (arrows) of the choke 
knob (5) and then turn it to Start}.
Cranking
NPlace the unit on the ground: It must 
rest securely on the engine's guard 
plate and the deflector. Check that the cutting attachment is not 
touching the ground or any other 
obstacles.
NMake sure you have a firm footing, 
either standing, stooping or 
kneeling.
NHold the unit firmly on the ground 
with your left hand and press down 
– do not touch the throttle trigger or 
throttle trigger lockout.
NOTICE
Do not stand or kneel on the drive tube.
NHold the starter grip with your right 
hand.
NPull the starter grip steadily.
NOTICE
Do not pull out the starter rope all the 
way – it might otherwise break.
NDo not let the starter grip snap back. 
Guide it slowly back into the housing 
so that the starter rope can rewind 
properly.
NContinue cranking until the engine 
runs.
NIf the engine does not start: Turn the 
choke knob to the start position} 
and repeat starting procedure.
Using the machine
If you have started the machine for the 
first time, refer to the notes on "Starting 
for first time" in section "Other Hints on 
Starting".
NIf the engine was started in the start 
position}: Briefly press down the 
trigger lockout and the pull the 
throttle trigger at the same time – 
the choke knob moves to the run 
position (F) and the engine settles 
down to idling speed.
Your machine is now ready for 
operation.
WARNING
The cutting attachment must not rotate 
in the RunF position with the engine at 
idling speed.
If the cutting attachment rotates when 
the engine is idling, refer to notes in 
chapter on "Adjusting the Throttle 
Cable" or have the machine serviced by 
your dealer. STIHL recommends an 
authorized STIHL servicing dealer.
NAttach the machine to the shoulder 
strap.
NMachine is ready for use.
FS 360, 410, 460
0000-GXX-0834-A0
5
FS 490
5
2709BA016 KN
6BA011 KN
6BA012 KN
6BA014 KN 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
33
Stopping the Engine
NDepress the momentary contact 
stop switch – the engine stops – 
release the stop switch – it springs 
back to the run position.
Other Hints on Starting
Starting for first time
NDepress the throttle trigger – do not 
press down the throttle trigger 
lockout.
If engine speed increases or the cutting 
attachment rotates:
NGo to section "Stopping the 
Engine".
NGo to "Adjusting the Throttle Cable".
If the engine speed does not increase, 
your machine is ready for operation.At very low outside temperatures
NSet the engine to winter operation if 
necessary, see "Winter Operation".
NIf the machine is very cold (frost on 
machine), allow the engine to warm 
up in the Start} position after 
starting until normal operating 
temperature is reached. Warning: 
The cutting attachment runs.
If the engine does not start
NCheck that all settings are correct.
NCheck that there is fuel in the tank 
and refuel if necessary.
NCheck that the spark plug boot is 
properly connected.
NRepeat the starting procedure.
Engine is flooded
NMove the choke lever to F and 
continue cranking until the engine 
runs.
Fuel tank run until completely dry
NAfter refueling, press the manual 
fuel pump bulb at least five times – 
even if the bulb is filled with fuel.
NNow start the engine.
During break-in period
A factory-new machine should not be 
run at high revs (full throttle off load) for 
the first three tank fillings. This avoids 
unnecessary high loads during the 
break-in period. As all moving parts 
have to bed in during the break-in 
period, the frictional resistances in the 
engine are greater during this period. 
The engine develops its maximum 
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle 
operation, allow the engine to run for a 
short while at idle speed so that engine 
heat can be dissipated by the flow of 
cooling air. This protects engine-
mounted components (ignition, 
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the 
engine to cool down. Empty the fuel tank 
and keep the machine in a dry place, 
well away from sources of ignition, until 
you need it again. For longer out-of-
service periods – see "Storing the 
Machine".
002BA485 KN
6BA024 KN
2SHUDWLQJ ,QVWUXFWLRQV 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
34
General Information
The filter has a very long service life. 
Do not remove the filter cover or replace 
the air filter as long as there is no 
noticeable loss of power.
Dirty air filters reduce engine power, 
increase fuel consumption and make 
starting more difficult.
Replacing the Air Filter
Only if there is a noticeable loss of 
engine power
NSet the choke knob to }.
NLoosen the screws (1).NRemove the filter cover (2).
NClean away loose dirt from around 
the filter (3) and inside the filter 
cover.
The air filter (3) is a pleated paper filter 
element.
NRemove and check the filter 
element (3) – replace if paper or 
frame is dirty or damaged.
NUnpack the new filter.
NOTICE
Do not bend or twist the filter before 
installation as it might otherwise be 
damaged – do not use damaged filters.
NFit the filter in the filter housing.
NFit the filter cover.
Use only high quality air filters to ensure 
the engine is protected from abrasive 
dust.STIHL recommends you use only 
original STIHL air filters. The high quality 
standard of these parts guarantees 
trouble-free operation, a long engine life 
and very long filter service lives.
Filter Element for Winter Operation
Maintenance and care of the special 
filter element for winter operation are 
described in the chapter on "Winter 
Operation".
Air filter
FS 410, 460FS 360, 410, 460
0000-GXX-0830-A0
1
2709BA017 KN
FS 490
1
FS 360, 410, 460
0000-GXX-0831-A0
3
2
2709BA018 KN
FS 490
3
2 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
35 Exhaust emissions are controlled by the 
design of the engine and components 
(e.g. carburation, ignition, timing and 
valve or port timing).
General Information
The M-Tronic controls fuel feed and 
ignition timing electronically in all 
operating conditions.  
M-
Tronic guarantees simple and fast 
starts. The engine is started in the 
Start} position irrespective of climatic 
conditions or engine temperature. After 
starting, the Start} position can be 
maintained until the engine runs 
smoothly.
M-Tronic ensures optimum engine 
power at all times, very good 
acceleration and automatic adjustment 
to suit changing conditions.
For this reason there is no need to 
change the carburetor setting – the 
carburetor has no adjusting screws.
If the usual good running behavior and 
engine power are not reached after an 
extreme change in operating conditions, 
contact your servicing dealer for 
assistance.
STIHL recommends that you have 
servicing and repair work carried out 
exclusively by an authorized STIHL 
servicing dealer.At temperatures below +50 °F (+10 °C):
Preheating the carburetor
Repositioning a shutter allows heated air 
to be drawn in from around the cylinder 
and mixed with cold air – this helps 
prevent carburetor icing.  
A n a rr o w ( 1)  on  th e s hr ou d in dic at es  t he  
setting of the shutter (2) for summer or 
winter operation. Meaning of symbols:
–"Sun" = summer operation
–"Snow crystal" = winter operation
Engine ManagementM-TronicWinter Operation
2
19926BA016 KN 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
36 NRemove the screw (3) from the 
shutter.
NPull the shutter (2) out of the shroud.
NRotate the shutter (2) from the 
summer position to the winter 
position and refit it.
NSecure the shutter in position with 
the screw (3). 
At temperatures between 
+50 °F (+10 °C) and +70 °F (+20 °C)
The machine can normally be operated 
in this temperature range with the 
shutter (2) in the summer position. 
Change the position of the shutter if 
necessary.
At temperatures above +70 °F (+20 °C)
NAlways return the shutter (2) to the 
summer position.
NOTICE
Do not operate the machine in the winter 
position at temperatures above 
+70 °F (+20 °C) because there is 
otherwise a risk of engine running 
problems and overheating. 
At temperatures below +14 °F (-
10 °C)
In extreme wintry conditions 
–Temperatures below 
+14 °F (-
10 °C)
–Powder or drifting snow
it is advisable to use the optional "cover 
plate kit". The cover plate kit contains the following 
parts for converting the power tool:
4Cover plate partially blanks off the 
slots in the starter housing 
5Air filter with synthetic fabric 
element
–For FS 460 with tank cap with 
hinged grip: O-ring for the tank filler 
cap
–Instructions for converting the 
machine
After installing the cover plate kit:
NSet the shutter (2) to the winter 
position. 
At temperatures above +14 °F (-
10 °C)
NRemove the parts of the cover plate 
kit and refit the standard parts for 
summer operation.
2
9926BA017 KN
3
2
9926BA018 KN
FS 460
4
5
3BA019 KN
2
2709BA019 KN4
FS 4902
5 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
37 Note for FS 460 with tank cap with 
hinged grip: The O-ring supplied with the 
cover plate kit can be left on the 
machine's filler cap.
Depending on the ambient temperature:
NSet the shutter (2) to the summer or 
winter position. 
Cleaning the Air Filter
NLoosen filter cover mounting 
screws.
NRemove the filter cover.
NClean away loose dirt from around 
the filter (5) and inside the filter 
cover.
NKnock the filter (5) out on the palm 
of your hand or blow it clear with 
compressed air from the inside 
outwards.
In case of stubborn dirt or sticky filter 
fabric:
NWash the filter in a clean, non-
flammable solution (e.g. warm 
soapy water) and then dry.
Always replace a damaged filter.Depending on the version, the power 
tool may be equipped with a handle 
heating system.
NSwitch on handle heating by moving 
the switch (1) on the left handle to Z.
Switch off the heating if the handle 
temperature feels too high.
NMove the switch (1) to 0
There is no risk of overheating during 
long periods of operation. The heating 
system is maintenance-free. Contact 
your dealer if you have any problems. 
STIHL recommends a STIHL servicing 
dealer.If there is a loss of engine power, the 
machine is difficult to start or runs poorly 
at idle, first check the spark plug.
Install a new spark plug after approx. 
100 operating hours or earlier if the 
electrodes are eroded/corroded.
The wrong fuel mix (too much engine oil 
in the gasoline), a dirty air filter and 
unfavorable running conditions (mostly 
at part throttle etc.) affect the condition 
of the spark plug. These factors cause 
deposits to form on the insulator nose, 
which may degrade performance.
Removing the Spark Plug
NRotate the screw (1) in the cap (2) 
until the screw head projects from it.
Electric Handle Heating
2709BA020 KN
1
SSaUN 3OXJ
1
9926BA020 KN 
						

							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
English
38 NLift the front of the cap (2) and push 
it to the rear to disengage.
NLeave the cap to one side.
NPull off the spark plug boot (3).
NUnscrew the spark plug.
Wrong fuel mix (too much engine oil in 
the gasoline), a dirty air filter and 
unfavorable running conditions (mostly 
at part throttle etc.) affect the condition 
of the spark plug. These factors cause 
deposits to form on the insulator nose 
which may result in trouble in operation.
If engine is down on power, difficult to 
start or runs poorly at idling speed, first 
check the spark plug.
NRemove spark plug – see "Starting / 
Stopping the Engine".
NClean dirty spark plug.NCheck electrode gap (A) and 
readjust if necessary – see 
"Specifications".
NUse only resistor type spark plugs of 
the approved range.
Rectify problems which have caused 
fouling of spark plug:
NToo much oil in fuel mix.
NDirty air filter.
NUnfavorable running conditions, 
e.g. operating at part load.
Fit a new spark plug after approx. 100 
operating hours or earlier if the 
electrodes are badly eroded.
WARNING
To reduce the risk of fire and burn injury, 
use only spark plugs authorized by 
STIHL. Always press the spark plug 
boot (1) snugly onto the spark plug 
terminal (2).Do not use a spark plug with a 
detachable SAE adapter terminal (3). 
Arcing may occur that could ignite 
combustible fumes and cause a fire. 
This can result in serious injuries or 
damage to property. 
NOnly use resistor type spark plugs 
with solid, non-threaded terminals
Installing the Spark Plug
NScrew the spark plug into the 
cylinder.
NPress the spark plug boot firmly 
onto the spark plug.
NFit the cap (1) on the shroud from 
the rear and push the lug (2) into the 
opening (3) in the shroud at the 
same time.
NSwing the cap forwards onto the 
shroud, insert and tighten down the 
screw (4) firmly.
3
9926BA021 KN
000BA039 KNA
2
0000-GXX-1830-A0
3
14
32
9926BA022 KN