Husqvarna 129 R Operator's Manual page 13

4. Use full throttle when you move the product from
side to side (Picture 39) to cut grass. Make sure that
the grass trimmer line is parallel to the ground.
T T o 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.
WARNING: Read and understand the safety
chapter before you clean, repair or do
maintenance on the product.
Maintenance schedule
Make sure that you obey the maintenance schedule.
The intervals are calculated from daily use of the
product. The intervals are different if you do not use the
product each day. Only do the maintenance work that is
found in this manual. Speak to an approved service
center about other maintenance work not found in this
manual.
Weekly maintenance
• Clean the external surfaces.
• Examine the idle speed.
• Examine the bevel gear grease.
• Examine the locknut.
Monthly maintenance
• Examine the starter rope handle and the starter
rope.
Yearly maintenance
• Examine the spark plug.
• Clean the external surfaces of the carburetor and its
adjacent areas.
• Clean the cooling system.
• Examine the spark arrester screen.
• Examine the fuel filter.
• Examine the fuel hose for damage.
• Examine all cables and connections.
50 hours maintenance
• Have an approved service center repair or replace
the muffler.
191 - 002 -
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.
To replace the trimmer line
See picture 49 to picture 56.
MAINTENANCE
To adjust the idle speed
• Make sure that the air filter is clean and the air filter
cover is attached before you adjust the idle speed.
• Adjust the idle speed with the idle adjustment screw
T (Picture 40) which is identified with "T" mark.
• The idle speed is correct when the engine operates
smoothly in all positions. The idle speed must be
below the speed when the cutting attachment starts
to turn.
1. Turn the idle adjustment screw clockwise until the
cutting attachment starts to turn.
2. Turn the idle adjustment screw counterclockwise
until the cutting attachment stops.
To do maintenance on the spark
arrester screen
Use a wire brush to clean the spark arrester screen
(Picture 41).
To clean the cooling system
Clean the parts of the cooling system (Picture 42) with a
brush.
To examine the spark plug
1. Examine the spark plug when:
a) the engine is low on power.
b) the engine is not easy to start.
c) the engine does not operate correctly at idle
CAUTION: Use the recommended spark
plug. Make sure that the replacement is the
same as the manufacturer supplied part. An
incorrect spark plug can cause damage to
the product.
speed.
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