MS 194 T
English
41
Installing the Spark Plug
N Screw the spark plug into the 
cylinder.
N Connect the spark plug boot (press 
it down firmly).
N Fit the carburetor box cover.
For periods of 3 months or longer
N Drain and clean the fuel tank in a 
well ventilated area.
N Dispose of fuel properly in 
accordance with local 
environmental requirements.
N Run the engine until the carburetor 
is dry – this helps prevent the 
carburetor diaphragms sticking 
together.
N Remove the saw chain and guide 
bar, clean them and spray with 
corrosion inhibiting oil.
N Thoroughly clean the machine – pay 
special attention to the cylinder fins 
and air filter.
N If you use a biological chain and bar 
lubricant, e.g. STIHL BioPlus, 
completely fill the chain oil tank.
N Store the machine in a dry, high or 
locked location, out of the reach of 
children and other unauthorized 
persons.
N Remove the chain sprocket cover, 
chain and guide bar.
N Disengage the chain brake: Pull the 
hand guard towards the front 
handle.
Replace the chain sprocket:
– after using two saw chains or 
sooner
– if the wear marks (arrows) on the 
sprocket are deeper than about 
0.5 mm (0.02 in) since this would 
reduce the life of the chain. You can 
use a gauge (special accessory) to 
check the depth of the wear marks.
It is best to use two saw chains in 
rotation with one sprocket.
STIHL recommends the use of original 
STIHL sprockets to ensure correct 
operation of the chain brake.
Storing the Machine Checking and Replacing the 
Chain Sprocket