Stihl Sr 420 - Assembling the Machine; Mounting the elbow

14
English / USA
SR 340, SR 420
!Warning!
Do not attempt any maintenance or
repair work not described in your
instruction manual. Have such work
performed by your STIHL servicing
dealer only.
!Warning!
Use the specified spark plug and make
sure it and the ignition lead are always
clean and in good condition. Always
press spark plug boot snugly onto spark
plug terminal of the proper size. (Note: If
terminal has detachable SAE adapter
nut, it must be securely attached.) A
loose connection between spark plug
terminal and the ignition wire connector
in the boot may create arcing that could
ignite combustible fumes and cause a
fire.
!Warning!
Never test the ignition system with the
spark plug boot removed from the spark
plug or with a removed spark plug, since
uncontained sparking may cause a fire.
!Warning!
Do not operate your power tool if the
muffler is damaged, missing or modified.
An improperly maintained muffler will
increase the risk of fire and hearing loss.
If your muffler was equipped with a
spark-arresting screen to reduce the risk
of fire, never operate your power tool if
the screen is missing or damaged.
Remember that the risk of forest fires is
greater in hot or dry weather.
Tighten all nuts, bolts and screws,
except the carburetor adjustment
screws, after each use.
For any maintenance of the emission
control system please refer to the
maintenance chart and to the limited
warranty statement near the end of the
instruction manual.
Store the power tool in a dry and high or
locked location out of reach of children.
Before storing for longer than a few
days, always empty the fuel tank. See
chapter "Storing the machine" in this
manual.
The throttle cable is already
connected and must not be kinked
during assembly.
Mounting the elbow
The combination wrench and carburetor
screwdriver are stowed on the underside
of the machine.
: Line up the stops on the elbow and
stub and push the elbow (1) into the
stub (2) as far as it will go.
: Fit the nut (3) in the hexagon recess
in the stub.
: Insert the screw in the nut from the
other side and tighten moderately –
the elbow must still turn.
Assembling the Machine
372BA023 KN
2
3
1