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Troubleshooting
Problem
Cause
The engine fails to
• The switch is in
start.
the OFF position.
• There is no spark.
• The motor
is flooded.
The motor fails to
• The carburetor "L" nozzle
accelerate adequately.
needs adjusting.
The motor fails to run
• The carburetor "H" nozzle
adequately in high
need adjusting.
speed.
• The fuel and oil mix is not right.
The motor fails to
reach maximum
• The air filter is soiled.
speed and / or emits
• The carburetor "H" nozzle
too much smoke.
needs adjusting or the spark arrester screen
is soiled.
The motor starts, functions
and accelerates but cannot
be set in idle speed.
The chain runs while the
motor is in idle speed.
The bar and chain are
• The chain oil tank is empty.
very hot and releases
smoke.
• The chain is too tight.
• The lubrication system is not working.
The motor starts, runs
• The chain brake is activated.
but the chain fails to
• The chain is too tense.
advance.
• The chain and chain bar are not properly
assembled.
• The chain and / or chain bar is damaged.
• Set the switch in the ON position.
• Check the spark. Remove the motor housing. Remove the spark plug from the
cylinder. Connect the spark plug cable and set it onto the motor cylinder with the
metal part touching the cylinder. Pull the jack-line and observe the spark in the
spark plug electrode. If there is no spark repeat the test with a new spark plug.
• With the ON switch turned off remove the spark plug. Push the choke lever up
to the bottom and pull the jack-line 15 to 20 times to eliminate excessive fuel in
the motor. Clean the spark plug and set it back in place. Follow the normal start
up procedure (see page 12). If the motor is not starting repeat the procedure
using a new spark plug.
• The idle speed is maladjusted.
• The idle speed is maladjusted.
Solution
• Take the chain saw to a
zed Service Center to adjust the carburetor.
• Take the chain saw to a
zed Service Center to adjust the carburetor.
• Replace the fuel mix with a fresh one following the
specifications in page 3.
• Clean the air filter (see page 19).
• Clean the spark arrester screen (see page 20).
• Take the chain saw to a
zed Service Center to adjust the carburetor.
• Turn right the idle speed screw to increase
speed (see page 20).
• Turn left the idle speed screw to decrease speed
(see page 20).
• Fill-up the oil tank. Remember it shall be filled
up each time the fuel tank is filled up.
• Lower the tension in the chain (see page 11).
• Activate the motor 30 to 45 minutes in medium
speed. Stop the motor and look for signals of
dripping in the anti-kickback guard or the chain bar.
If there is oil present is possible the chain needs
honing or the chain bar is damaged. If there is no
oil dripping go to a
zed Service Center to repair the lubrication system.
• Release the chain brake (see page 8).
• Lower the tension in the chain (see page 11).
• Assemble properly the chain and the chain bar
(see pages 10 and 11).
• Replace the chain and / or the chain bar with
other similar.
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