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Section 4: Operation
ADJUST LINE CUTTING HEIGHT
Cutting Height Adjustment
The cutting height of the trimmer line
adjusts from 1-1/2"-to-4-1/2" high in
infinite increments. The cutting height
has been factory-set at one of the
higher settings– we recommend that
you start at this higher setting and
make adjustments as needed. To ad-
just the cutting height:
A. Cutting line height can be conve-
niently changed when the wear cup is
in contact with the ground. If neces-
sary, you may tip the unit back slightly
for a better view (do not tip trimmer all
the way back or motor oil may flow to
the exhaust area and the engine may
smoke for several seconds when
started).
B. Use a 1/2" wrench to loosen both
bolts (A, Figure 4-1) securing the trim-
mer head.
C. Note the cutting heights marked on
the side of the spindle head (Figure 4-
2). Move the top of the trimmer head
to the desired setting.
D. Tighten both trimmer head bolts
securely (to 75 in/lbs.) and evenly.
General Recommendations:
• In tough trimming conditions, use
the highest height settings.
• For less demanding situations, use
any trimming height desired.
• With difficult jobs, use extra heavy-
duty red line (.155" dia.) to handle
thick, tough growth best.
• With easier jobs, use heavy-duty
green line (.130" dia.) which provides
a higher quality level of cut. This
lighter weight line is also recom-
mended near trees or ornamentals to
help prevent girdling (cutting the
bark).
USING THE TRIMMER HEAD
CONTROL BAIL
After the pre-starting checkups are
complete, gasoline is added to the fuel
tank, handlebar height is adjusted, and
trimmer line height is selected, it is es-
sential to know how to use the control
bail to start and stop the trimmer head.
Here’s how to operate this control:
A. The trimmer head control bail (A,
Figure 4-3) is used to start and stop
trimmer head motion.
B. Leave the control bail in the disen-
gaged (released) position when start-
ing the engine to prevent the trimmer
head from turning when the engine
starts.
C. When the engine is running, pull
and hold the control bail up against the
handlebar (Figure 4-4) to activate the
trimmer head.
D. Let go of the control bail to stop the
trimmer head. The control bail should
spring forward to the disengaged posi-
tion. If it doesn’t, do not use the ma-
chine until the control bail has been
repaired.
CAUTION
Before adjusting the cutting
height, shut off the engine,
wait for all moving parts to
stop, allow the engine to
cool, disconnect the spark
plug wire and prevent it from
touching the spark plug.
Failure to comply could result
in personal injury or property
damage.
Figure 4-1
A
A
Figure 4-2
HEIGHT
GUIDE
Figure 4-3
A
Figure 4-4