Husqvarna 531RB Operator's Manual page 19

reduce the engine speed before stopping
the engine, except in an emergency.
1. Move the throttle lever/throttle trigger to the idle
position.
a) Push the throttle lever to the idle position. (Fig.
53)
b) Release the throttle trigger. (Fig. 54)
2. Push the engine stop button.
a) (Fig. 55)
b) (Fig. 56)
3. Turn the fuel lever up and stop at the horizontal
position (B). (Fig. 49)
WARNING: The blade rotates by inertia for a
while after the engine has stopped. Do not
touch the blade until the engine has stopped
completely.
WARNING: Do not touch the muffler or
spark plug with bare hands immediately
after the engine has stopped. Otherwise you
may suffer burns because the muffler and
the spark plug are extremely hot.
Blade thrust
A blade thrust is when the product moves to the side
quickly and with force. A blade thrust occurs when the
grass blade hits or catches on an object that cannot be
cut. A blade thrust can eject the product or operator in
all directions. There is a risk of injury to the operator and
bystanders.
The risk increases in areas where it is not easy to see
the material that is cut.
Do not cut with the area of the blade that is shown in
black. The speed and movement of the blade can cause
blade thrust. The risk increases with the thickness of the
stem that is cut.
(Fig. 57)
Grass clearing with a grass blade
CAUTION: Do not use grass blades and
grass knives on wood. Use grass blades
and grass knives for long or heavy grass
only.
• Move the product from side to side.
• Start the movement from right to left when you cut.
Move the product to the right before you cut again.
• Cut with the left side of the grass blade. (Fig. 58)
• Tilt the grass blade to the left to make the grass fall
in a line. This makes it easy to collect the grass.
• Keep a stable position with your feet apart.
907 - 003 - 23.04.2019
• Move forward after each right movement and make
sure that you have a stable position again before you
cut again.
• Keep the support cup with a light pressure against
the ground to make sure that the grass blade does
not hit the ground.
• Obey these instructions to decrease the risk that cut
material winds around the grass blade:
a) Apply full throttle.
b) Do not move the grass blade through cut
material when you move the product from left to
right.
• Before you collect the cut material, stop the engine
and remove the product from the harness. Put the
product down on the ground.
Grass trimming with a trimmer head
To trim the grass
1. Hold the trimmer head immediately above the
ground at an angle. Do not push the trimmer line into
the grass. (Fig. 59)
2. Decrease the length of the trimmer line by 10-12
cm / 4-4.75 in.
3. Decrease the engine speed to decrease the risk of
damage to plants.
4. Use 80 % throttle when you cut grass near objects.
(Fig. 60)
To clear grass with a grass blade
1. Grass blades and grass cutters must not be used on
woody stems.
2. A grass blade is used for all types of tall or coarse
grass.
3. The grass is cut down with a sideways, swinging
movement, where the movement from right-to-left is
the clearing stoke and the movement from left-to-
right is the return stoke. Let the left-hand side of the
blade (between 8 and 12 o'clock) do the cutting.
4. 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.
5. Try to work rhythmically. Stand firmly with your feet
apart. Move forward after the return stoke and stand
firmly again.
6. Let the support cup rest lightly against the ground. It
is used to protect the blade from hitting the ground.
7. Reduce the risk of material wrapping around the
blade by always work at full throttle and avoid the
previously cut material during the return stoke.
8. Stop the engine, unclip the harness and place the
machine on the ground before you start to collect the
cut material.
19