TS 440
English
45
N Remove the spark plug boot (3)
N Unscrew the spark plug (4)
Checking the spark plug
N Clean the spark plug if it is dirty
N Check the electrode gap (A) and
readjust if necessary – see
"Specifications"
N Use only resistor type spark plugs of
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.
WARNING
To reduce the risk of fire and burn injury,
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.
N Only use resistor type spark plugs
with solid, non-threaded terminals
Installing the spark plug
N Check the electrode gap of the
spark plug and adjust it as
necessary. See specifications
N Install the spark plug by hand and
screw it in
N Tighten the spark plug with an
appropriately sized combination
wrench
N Press the spark plug boot firmly
onto the spark plug
N Position the cap for the spark plug
boot and screw it down securely
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