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15 Cleaning
– The lawn mower is out of reach of children.
– The lawn mower is clean and dry.
– The lawn mower cannot tip over.
If the lawn mower is to be stored for more than three months:
► Run the fuel tank empty.
► Have the fuel tank cleaned by a STIHL specialist dealer.
► Change the engine oil as described in the engine 
instruction manual.
► Unscrew the spark plug.
WARNING
Sparks may escape if the starter handle is pulled out while 
the spark plug socket is detached. Sparks may cause fires 
and explosions in highly flammable or explosive 
environments. This may result in serious or fatal injury to 
people and damage to property.
► Keep the spark plug socket away from the spark plug 
opening.
► Pull out and return the starter handle a number of times.
► Screw in the spark plug and tighten.
15.1 Upending the Lawn Mower
► Run the fuel tank empty.
The engine stops.
► Place the lawn mower on a level surface.
► Detach the grass catcher box.
► Set the cutting height to position 1, @ 11.2.
► Detach spark plug socket (1).
► Hold handlebar (2) and loosen star grip nuts (3).
► Fold handlebar (2) rearwards.
► Open discharge flap (4) and hold it open.
► Upend the lawn mower.
15.2 Cleaning the Lawn Mower
► Stop the engine.
► Allow the lawn mower to cool down.
► Detach the spark plug socket.
► Clean the lawn mower with a damp cloth.
► Clean the ventilation slots with a paintbrush.
► Upend the lawn mower.
► Clean the area around the blade and the blade with a 
stick, a soft brush or a damp cloth.
16.1 Maintenance Intervals
Maintenance intervals are dependent on the ambient 
conditions and the working conditions. STIHL recommends 
the following maintenance intervals:
15 Cleaning
16 Maintenance