Problem
The tool is producing
excessive vibration or
noise.
The bump head does not
advance the line.
The battery pack loses
charge quickly.
Possible Cause
1. The gearbox is not
being lubricated
properly.
2. There is debris under
the grass shield or in
the bump head housing
on the trimmer.
3. The spool is not
properly wound.
1. The trimmer is out of
line.
2. The line is tangled in the
bump head housing.
3. There is debris under
the grass shield or in
the bump head housing
on the trimmer.
1. The battery pack is over
or under the appropriate
temperature range.
2. The trimmer is
overloaded.
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Corrective Action
1. Lubricate the gearbox.
2. Clean any debris from
under the grass shield
or in the bump head
housing.
3. Advance the line using
the bump head and/or
remove the line on the
spool and wind the
spool again.
1. Add more line to the
bump head.
2. Remove the bump head
cover and untangle the
line.
3. Clean any debris from
under the grass shield
or in the bump head
housing.
1. Move the battery pack
to a place where it is
dry and the temperature
is between 5°C (41°F)
and 40°C (104°F).
2. Trim at a slower pace.