RedMax BCZ350S Manual De Instrucciones página 23

7. Working techniques
■ Basic working techniques
Always slow the engine to idle speed after each working
operation. Long periods at full throttle without any load on the
engine can lead to serious engine damage.
WARNING
• Sometimes branches or grass get caught between the
guard and cutting attachment. Always stop the engine
before cleaning.
WARNING
• Machines fitted with saw blades or grass blades can be
thrown violently to the side when the blade comes into
contact with a fixed object. This is called blade thrust. A
blade thrust can be violent enough to cause the machine
and/or operator to be propelled in any direction, and
possibly lose control of the machine. Blade thrust can
occur without warning if the machine snags, stalls or
binds. Blade thrust is more likely to occur in areas where it
is difficult to see the material being cut.
• Avoid cutting with the area of the blade between the 12
o'clock and 3 o'clock positions. Because of the speed of
rotation of the blade, blade thrust can occur if you attempt
to cut thick stems with this area of the blade.
■ Grass clearing using a grass blade
• Grass blades and grass cutters must not be used on woody
stems.
• A grass blade is used for all types of tall or coarse grass.
• The grass is cut down with a sideways, swinging movement,
where the movement from right-to-left is the clearing stroke and
the movement from left-to-right is the return stroke. Let the left-
hand side of the blade (between 8 and 12 o'clock) do the
cutting.
• If the blade is angled to the left when clearing grass, the grass
will collect in a line, which makes it easier to collect, e.g. by
raking.
• Try to work rhythmically. Stand firmly with your feet apart. Move
forward after the return stroke and stand firmly again.
• Let the support cup rest lightly against the ground. It is used to
protect the blade from hitting the ground.
• Reduce the risk of material wrapping around the blade by
following these instructions:
1. Always work at full throttle.
2. Avoid the previously cut material during the return stroke.
• Stop the engine, unclip the harness and place the machine on
the ground before you start to collect the cut material.
■ Grass trimming with a trimmer head
Trimming
• Hold the trimmer head just above the ground at an angle. It is
the end of the cord that does the work. Let the cord work at its
own pace. Never press the cord into the area to be cut.
• The cord can easily remove grass and weeds up against walls,
fences, trees and borders, however it can also damage
sensitive bark on trees and bushes, and damage fence posts.
• Reduce the risk of damaging plants by shortening the cord to
10-12 cm and reducing the engine speed.
Clearing
• The clearing technique removes all unwanted vegetation. Keep
the trimmer head just above the ground and tilt it. Let the end of
the cord strike the ground around trees, posts, statues and the
like.
CAUTION! This technique increases the wear on the cord.
• The cord wears quicker and must be fed forward more often
when working against stones, brick, concrete, metal fences,
etc., than when coming into contact with trees and wooden
fences.
• When trimming and clearing you should use less than full
throttle so that the cord lasts longer and to reduce the wear on
the trimmer head.
BCZ350S
U
S
US-21