FS 310
English
35
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
N Screw home the spark plug, fit the 
boot and press it down firmly.
Use STIHL gear lubricant (special 
accessory) for lubrication.
N Check grease level about every 100 
hours of operation.
N Unscrew the filler plug (1). If no 
grease can be seen on the inside of 
the filler plug, screw the tube of 
lubricant (2) into the filler hole.
N Squeeze up to 1/5 oz (5 g) grease 
into the gearbox.
NOTICE
Do not completely fill the gearbox with 
grease.
N Refit the filler plug and tighten it 
down firmly.
Replacing the Starter Rope
N Push the slide control in direction of 
arrow h – to STOP-0.
N Take out the screws (1).
N Remove the starter cover (2) from 
the housing.