recommends the following maintenance inter‐
vals:
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.
16.3 Adjusting the throttle cable
► Shut off the engine.
► Totally press throttle trigger lockout (1) and
throttle trigger (2) and keep pressed.
► Turn screw (3) clockwise until resistance is
felt.
► Continue turning screw (3) clockwise by half a
turn.
16.4 Sharpening and Balancing a
Metal Cutting Attachment
Correctly sharpening and balancing metal cutting
attachments requires a lot of practice.
STIHL recommends you have metal cutting
attachments resharpened and balanced by a
STIHL servicing dealer.
► Sharpen the metal cutting attachment as
described in the instructions and on the pack‐
aging supplied with the cutting attachment you
are using.
17 Repairing
17.1 Repairing the Trimmer and
Cutting Attachment
The trimmer and cutting attachment cannot be
repaired by the user.
► If the trimmer or cutting attachment is dam‐
aged: Do not use your trimmer or cutting
attachment and contact your STIHL servicing
dealer.
18 Troubleshooting
18.1 Troubleshooting Trimmer
Most problems can be attributed to the same cause.
► Carry out the following measures:
► replace the air filter.
► Clean or replace the spark plug.
► Adjust saw for winter or summer operation.
► If the problem continues: Carry out the measured listed below.
English 17 Repairing
20 0458-856-0121-A. VA0.B21.
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