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H
L
T
Turn the H-jet and L-jet clockwise to get less fuel in
the mixture and counterclockwise to get more fuel in the
mixture. Less fuel in the mixture gives a higher engine
speed and more fuel in the mixture gives lower speed.
To adjust the idle speed
1. Make sure that the air filter is clean and the air filter
cover is installed.
2. Adjust the idle speed with the idle adjustment screw.
The idle adjustment screw T is identified with a "T"
mark.
3. Turn the idle adjustment screw clockwise until the
cutting attachment starts to turn.
4. Turn the idle adjustment screw counterclockwise
until the cutting attachment stops.
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.
WARNING:
If the cutting attachment
does not stop when you adjust the idle
speed, turn to your nearest servicing dealer.
Do not use the product until it is correctly
adjusted or repaired.
Note: Refer to
Technical data on page 22
for the
recommended idle speed.
To do maintenance on the trimmer
head
1. Only use the recommended cutting attachment and
cutting attachment guard. Refer to
Accessories on
page 23
.
2. Make sure that the cutter on the cutting attachment
guard is not damaged, it cuts the cord to the correct
length.
3. Install the cord as the illustrations on the last pages
of the manual shows.
Cooling system
The product has a cooling system to keep the operation
temperature as low as possible.
Clean the components of the cooling system with a
brush weekly or more frequently in rougher conditions.
A dirty or blocked cooling system makes the product too
hot which causes damage to the piston and cylinder.
The cooling system has the following components:
1. Air intake on the starter.
2. Fins on the flywheel.
3. Cooling fins on the cylinder.
4. Cylinder cover.
5. Muffler cover.
6. Muffler plate.
1
6
3
4
5
2
To do maintenance on the muffler
The muffler decreases the noise level and directs the
exhaust gases away from the operator.
WARNING:
Mufflers that have catalytic
converters get very hot during operation and
will stay hot for some time after you stop the
product. This also applies at idle speed. If
1927 - 001 - 10.06.2022 19
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