Engine Running Behavior - Stihl FC 70 Manual De Instrucciones

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Checking the Spark Plug
Clean dirty spark plug.
N
Check electrode gap (A) and
N
readjust if necessary – see
"Specifications".
Use only resistor type spark plugs of
N
the approved range.
Rectify problems which have caused
fouling of spark plug:
Too much oil in fuel mix.
–
Dirty air filter.
–
Unfavorable running conditions,
–
e.g. operating at part load.
24
A
WARNING
To reduce the risk of fire and burn injury,
use only spark plugs authorized by
STIHL. Always press spark plug boot (1)
snugly onto spark plug terminal (2) of the
proper size. (Note: If terminal has
detachable SAE adapter nut, it must be
attached.) A loose connection between
spark plug boot and ignition wire
connector in the boot may create arcing
that could ignite combustible fumes and
cause a fire.
Installing the spark plug
Screw home the spark plug, fit the
N
boot and press it down firmly.

Engine Running Behavior

If engine running behavior is
unsatisfactory even though the air filter
1
is clean and the carburetor is properly
adjusted, the cause may be the muffler.
Have the muffler checked for
contamination (carbonization) by your
servicing dealer.
STIHL recommends that you have
2
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.
FC 70 C