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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 25
for the
recommended idle speed.
To adjust the start throttle speed
(525RS)
1. Apply idle speed.
2. Push the start throttle lock. Refer to
Product
overview on page 2
.
3. If the start throttle speed is less than 4000 rpm, turn
the adjuster screw (A) clockwise until the cutting
attachment rotates. Turn the adjuster screw (A)
clockwise) 1/2 turn more.
A
4. If the start throttle speed is too high, turn the adjuster
screw (A) counterclockwise until the cutting
attachment stops. Turn the adjuster screw (A)
clockwise 1/2 turn more.
To do maintenance on the trimmer
head
1. Only use the recommended cutting attachment and
cutting attachment guard. Refer to
Accessories on
page 26
.
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.
1363 - 001 - 25.10.2019
21
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