Adjust The Length Of The Cutting Line; Adjust The Cutting Diameter; Line Cut-Off Blade; Maintenance - GreenWorks STF457 Operator's Manual

EN
• Move the machine from right to left to prevent
thrown debris toward the operator.
• Do not cut in dangerous areas.
• Do not force the trimmer head into uncut grass.
• Wire and picket fences cause cutting line wear and
breakage. Stone and brick walls, curbs, and wood
can wear the cutting line quickly.
4.5 ADJUST THE LENGTH OF THE
CUTTING LINE
Figure 10.
While you operate the machine, the cutting line gets
worn and shorter. You can adjust the length of the
cutting line.
1. Hit the trimmer head against the ground while you
operate the machine.
2. Line is automatically released and the cut-off blade
cuts the excess length.
4.6

ADJUST THE CUTTING DIAMETER

Figure 11.
The machine is set at a 356 mm cutting diameter. You
can adjust to a 406 mm cutting diameter.
Set the cutting diameter to 356 mm for greater runtime
and 406 mmfor a larger cutting area.
1. Remove the battery pack.
2. Remove the blade screws from the cut-off blade.
3. Turn the cut-off blade 180°.
4. Tighten the blade screws.
4.7

LINE CUT-OFF BLADE

Figure 11.
This trimmer is equipped with a line cut-off blade
on the guard. The line cut off blade continuously
trims the line to ensure a consistent and efficient cut
diameter. Advance line whenever you hear the engine
running faster than normal, or when trimming efficiency
diminishes. This will maintain best performance and
keep the line long enough to advance properly.
5

MAINTENANCE

Read and understand the safety regulations and the
maintenance instructions before you clean, repair or
do the maintenance work on the machine.
NOTE
IMPORTANT
English
Make sure that all nuts, bolts and screws are tight.
Check regularly that the handles are firmly mounted.
Use only the replacement parts and accessories of the
initial manufacturer.
5.1

GENERAL INFORMATION

Only your dealer or approved service center can do
the maintenance that is not given in this manual.
Before the maintenance operations:
• Stop the machine.
• Remove the battery pack.
• Cool the motor.
• Store the machine in a cool and dry place.
• Use correct clothing, protective gloves and safety
glasses.
5.2

CLEAN THE MACHINE

• Clean the machine after each use with a moist cloth
dipped in neutral detergent.
• Do not use aggressive detergents or solvents like
"glass cleaner" to clean the plastic parts or handles.
• Keep the trimmer head free from grass, leaves, or
excessive grease.
• Keep the air vents clean and free of debris to avoid
overheating and damage of the motor.
• Do not spray water onto the motor and electrical
components.
5.3

REPLACE THE SPOOL

Figure 12 - 20.
1. Push the tabs on the sides of the trimmer head at
the same time.
2. Pull and remove the spool cover.
3. Remove the remaining spool.
4. Put the spool in the spool cover.
Make sure that the cutting line is in the slot on the new
spool, and is extended approximately 15 cm before
you install the new spool.
5. Put the ends of the cutting lines through the holes.
6. Extend the cutting line to release it from the guide
slot in the spool.
7. Install the spool and spool cover onto the trimmer
head.
6
IMPORTANT
IMPORTANT
IMPORTANT
NOTE