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English | 15
Dismounting the spool, winding up the cutting
line and mounting the spool (see figures J to H)
u Remove the mains plug before replacing the spool.
Press both latches of the spool cover together and remove
the spool cover (9). Afterwards, remove the empty spool
(10).
Cut off approx. 4.0 m line from the refill roll. Slide one end of
the cutting line into the hole for line wind-up (11) in the
spool and wind up the cutting line uniformly and tightly.
Slide the other end of the cutting line through the hole for
line guiding (12) in the trimmer head and mount the spool
back into the trimmer head. Affix the spool by mounting the
spool cover .
Line Feeding (see figure K)
Semi-automatic Line Feeding
The trimmer is equipped with a semi-automatic feeding sys-
tem. The system feeds 10mm of the line with every press of
the on/off switch (3).
Manual Line Feeding
Press the line-feed button (13), and pull the cutting line out
to the desired length.
Troubleshooting
ProblemPossible CauseCorrective Action
Motor refuses to startPower turned offTurn power on
Mains socket faultyUse another socket
Extension cable damagedInspect cable, replace if damaged
Fuse faulty / blownReplace fuse
Garden tool functions
intermittently
Extension cable damagedInspect cable, replace if damaged
Internal wiring of garden tool defectiveContact Bosch customer service agent
Garden product la-
bours
Grass too highCut in stages
Garden tool does not
cut
Cutting line too short/broken offManually feed cutting line
Spool emptyReplace line spool
Cutting line can no
longer be fed
Line inside the spool entangledInspect the spool, rewind if necessary
Spool emptyRefill line spool
Line retracts into spoolCutting line too short/broken off
Remove spool – rethread line (see figures H − J)
Line breaks frequentlyLine inside the spool entangled
Remove spool – rewind line (see figures H − J)
Trimmer used incorrectlyOnly trim with the tip of the line, avoid stones,
walls and other hard objects. Feed the line regu-
larly to maintain full cutting diameter.
Heavy vibrationsCutting line broken
Cutting system damaged
Grass between spool housing and line-feed but-
ton
Grass in hole for line feed
Pull out cutting line with manual feed (see figure
K)
Contact Bosch customer service agent
Disassemble spool cover and remove grass
Remove grass from hole for line feed
Maintenance and Service
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Bosch Power ToolsF 016 L94 451 | (12.05.2022)
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