To do a check of the vibration damping
system
1. Make sure that there are no cracks or deformation
on the vibration damping units.
2. Make sure that the vibration damping units are
correctly attached to the engine unit and handle unit.
for information
about where the vibration damping system is on your
product.
To do a check of the start/stop switch
1. Start the engine.
2. Push the start/stop switch to the STOP position. The
engine must stop.
To do a check of the muffler
WARNING: Do not use a product that has a
defective muffler or a muffler that is in bad
condition.
WARNING: Do not use a product if the spark
arrestor mesh on the muffler is missing or
defective.
1. Examine the muffler for damages and defects.
2. Make sure that the muffler is correctly attached to
the product.
3. If your product has a special spark arrestor mesh,
clean the spark arrestor mesh weekly.
4. Replace a damaged spark arrestor mesh.
CAUTION: If the spark arrestor mesh is
blocked the product becomes too hot and
this causes damage to the cylinder and
piston.
Carburetor adjustment
Because of environmental and emissions laws, your
product has adjustment limitations on the carburetor
adjuster screws. This decreases the harmful exhaust
fumes from your product. You can only turn the
adjustment screws maximum ½ turn.
1/2
1/2
H
L
Basic adjustments and run-in
The basic carburetor adjustments are done at the
factory. For the recommended idle speed, refer to
.
CAUTION: Do not operate the product at too
high speed during the first 10 hours of
operation.
CAUTION: If the saw chain rotates at idle
speed, turn the idle speed screw
counterclockwise until the saw chain stops.
To adjust the low speed needle (L)
• Turn the low speed needle clockwise until stop.
Note: If the product has a bad acceleration capacity
or if the idle speed is not correct, turn the low speed
needle counterclockwise. Turn the low speed needle
until the acceleration capacity and idle speed is
correct.
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