0458-507-0121-A
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16 Maintenance
► Clean cooling air slots with a soft brush.
15.2 Cleaning the Deflector and Cutting Attachment
► Shut off the engine.
► Clean the deflector and cutting attachment with a damp
cloth or a soft brush.
15.3 Cleaning the Spark Plug
► Shut off the engine.
► Allow trimmer to cool down.
► Pull off the spark plug boot (1).
► If area around the spark plug (2) is dirty: Clean it with a
damp cloth.
► Unscrew the spark plug (2).
► Clean the spark plug with a damp cloth.
► If the spark plug is corroded: Install a new spark plug.
► Insert and tighten down the spark plug (2) firmly.
► Connect the spark plug boot (1) and press it down firmly.
16.1 Maintenance Intervals
The maintenance intervals are dependent on the
environmental and operating conditions. STIHL
recommends the following maintenance intervals:
After every 25 hours of operation
► Lubricate the gearbox.
After every 100 hours of operation
► Install a new spark plug.
Monthly
► Have fuel tank cleaned by a STIHL servicing dealer.
► Have pickup body (filter) in fuel tank cleaned by a STIHL
servicing dealer.
Every 12 months
► Have pickup body (filter) in fuel tank replaced by a STIHL
servicing dealer.
16.2 Lubricating the Gearbox
► Remove the screw plug (2).
► If no grease can be seen on the end of the screw plug (2):
► Screw the tube (1) of STIHL gear grease into the filler
hole.
► Squeeze 5 g of STIHL gear grease into the gear
housing.
► Unscrew the tube (1) of STIHL gear grease.
► Refit and tighten down the screw plug (2) firmly.
► Run the trimmer for 1 minute.
STIHL gear grease is distributed evenly.
16 Maintenance
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