Engine Running Behavior; Maintenance And Care - Stihl SR 200 Instruction Manual

21 Engine Running Behavior

– Unfavorable running conditions.
WARNING
Arcing may occur if the adapter nut (1) is loose
or missing. Working in an easily combustible or
explosive atmosphere may cause a fire or an
explosion. This can result result in serious inju‐
ries or damage to property.
► Use resistor type spark plugs with a properly
tightened adapter nut.

22 Maintenance and Care

The following intervals apply for normal operating
conditions. The specified intervals must be short‐
ened accordingly when working for longer than nor‐
mal or under difficult cutting conditions (extensive
dust, etc.).
Complete machine
Control handle
Air filter
Manual fuel pump (if
present)
Fuel pickup body in fuel
tank
Fuel tank
Carburetor
Spark plug
0458-457-0121-C
1
Visual inspection (condi‐
tion, leaks)
Clean
Function test
Clean
replace
check
Have repaired by a spe‐
2)
cialist dealer
Have checked by
2)
dealer
Have replaced by serv‐
2)
icing dealer
Clean
Check idle speed
Readjust idle speed
Adjust electrode gap
20.3 Installing the spark plug
► Screw home the spark plug, fit the boot and
press it down firmly.
21 Engine Running Behavior
If engine running behavior is unsatisfactory even
though the air filter is clean and the carburetor is
properly adjusted, the cause may be the muffler.
Have the muffler checked for contamination (car‐
bonization) by your servicing dealer.
STIHL recommends that you have servicing and
repair work carried out exclusively by an author‐
ized STIHL servicing dealer.
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