Stihl TS 440 Instruction Manual page 47

3
4
Remove the spark plug boot (3)
N
Unscrew the spark plug (4)
N
Checking the spark plug
Clean the spark plug if it is dirty
N
Check the electrode gap (A) and
N
readjust if necessary – see
"Specifications"
Use only resistor type spark plugs of
N
the approved range. See the
chapter "Specifications" in this
instruction manual
Correct the problems that have caused
fouling of the spark plug:
too much oil in fuel mix,
–
dirty air filter,
–
unfavorable running conditions, e.g.
–
operating at part throttle.
TS 440
WARNING
To reduce the risk of fire and burn injury,
A
use only spark plugs authorized by
STIHL. Always press the spark plug
boot (1) firmly and securely 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.
Only use resistor type spark plugs
N
with solid, non-threaded terminals
1
3
2
Installing the spark plug
Check the electrode gap of the
N
spark plug and adjust it as
necessary. See specifications
Install the spark plug by hand and
N
screw it in
Tighten the spark plug with an
N
appropriately sized combination
wrench
Press the spark plug boot firmly
N
onto the spark plug
Position the cap for the spark plug
N
boot and screw it down securely
English
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