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Fig. 6
ADJUSTING TRIMMING LINE LENGTH
The bump head cutting attachment allows you to release
trimming line without stopping the engine. To release more line,
lightly tap the cutting attachment on the ground (Fig. 7) while
operating the trimmer at high speed.
NOTE:
Always keep the trimming line fully extended. Line
release becomes more difficult when the cutting line
gets shorter.
Each time the head is bumped, about 1 in. (25.4 mm) of
trimming line releases. A blade in the cutting attachment shield
will cut the line to the proper length if any excess line
is released.
TIPS FOR BEST TRIMMING RESULTS
• Keep the cutting attachment parallel to the ground.
• Do not force the cutting attachment. Allow the tip of the line
to do the cutting, especially along walls. Cutting with more
than the tip will reduce cutting efficiency and may overload
the engine.
• Cut grass over 8 in. (200 mm) by working from top to bottom
in small increments to avoid premature line wear or
engine drag.
• Cut from right to left whenever possible. Cutting to the left
improves the unit's cutting efficiency. Clippings are thrown
away from the operator.
• Slowly move the trimmer into and out of the cutting area at
the desired height. Move either in a forward-backward or
side-to-side motion. Cutting shorter lengths produces the
best results.
• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon:
• Following the trimming techniques.
• What vegetation is being cut.
• Where vegetation is cut.
For example, the line will wear faster when trimming against
foundation wall as opposed to trimming around a tree.
DECORATIVE TRIMMING
Decorative trimming is accomplished by removing all vegetation
around trees, posts, fences and more. Rotate the whole unit so
that the cutting attachment is at 30° angle to the ground (Fig. 8).
Fig. 8
For best results, tap the bump knob on bare ground or hard soil.
If you attempt a line release in tall grass, the engine may stall.
Always keep the trimming line fully extended. Line release
becomes more difficult when the cutting line
gets shorter.
NOTE:
Do not rest the bump head on the ground while the unit
is running.
Some line breakage will occur from:
• Entanglement with foreign matter.
• Normal line fatigue.
• Attempting to cut thick, stalky weeds.
• Forcing the line into objects such as walls or fence posts.
CAUTION:
Do not remove or alter the line cutting blade
assembly. Excessive line length will make the clutch
overheat. This may lead to serious personal injury or
damage to the unit.
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