Stihl SR 450 Instruction Manual page 8

English
Your power tool comes standard with
either a screw-type or bayonet-type fuel
cap.
Bayonet fuel cap
Never use a tool to open or close the
bayonet-type fuel cap. This may
damage the cap and cause fuel leakage.
Close the bayonet-type fuel cap
carefully after refueling.
Screw-type tank cap
After fueling, tighten
down the screw-type fuel
cap as securely as
possible.
This reduces the risk of unit vibrations
causing the fuel cap to loosen or come
off and spill quantities of fuel.
6
Before Starting
Check that your power tool is properly
assembled and in good condition,
especially if it has been subjected to
unusually high loads for which it was not
designed (e.g. heavy impact or a fall).
Check the fuel system for leaks,
–
paying special attention to visible
parts such as the tank cap, hose
connections and the manual fuel
pump (on machines so equipped). If
there are any leaks or damage, do
not start the engine – risk of fire.
Have your machine repaired by a
servicing dealer before using it
again.
The setting lever must move easily
–
to STOP or 0
Throttle trigger must move freely
–
and spring back to the idle position
when released.
Check that the spark plug boot is
–
secure – a loose boot may cause
arcing that could ignite combustible
fumes and cause a fire.
Check the fuel system for leaks.
–
Check condition and tightness of
–
container, hose and metering unit.
Check condition of harness straps
–
and replace damaged or worn
straps.
To reduce the risk of accidents, do not
operate the unit if it is not properly
assembled and in good condition.
For emergencies: Practice quickly
opening the fastener on the waist belt,
loosening the shoulder straps and
setting down the unit. To avoid damage,
do not throw the power tool to the
ground when practicing.
Starting the Engine
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Your power tool is designed to be
operated by one person only. Do not
allow other persons in the work area –
even when starting.
Start the engine as described in the
instruction manual.
Place the power tool on level ground,
make sure you have secure footing, hold
the power tool securely.
If an assistant is required to put the
power tool on your back, make sure that
the engine is running at idle speed
–
the assistant is not standing in the
–
area of the exhaust outlet and
breathing exhaust fumes
the valve lever and, on SR 450 only,
–
the metering lever is closed
SR 430, SR 450