Husqvarna 131RB Operator's Manual page 17

WARNING: Risk of burn or fire. Mufflers with
catalytic converters get very hot during
operation.
WARNING: Risk of fire. The muffler
decreases the noise level and identifies the
exhaust gases from the operator. The
exhaust gases are hot and can contain
sparks.
CAUTION: The spark arrester screen must
be replaced if it is damaged. Do not use a
product if the spark arrester screen on the
muffler is missing or defective.
CAUTION: If the spark arrester screen is
blocked, the product will be too hot. This will
cause damage to the cylinder and piston.
1. Make sure that the muffler is not damaged.
2. Make sure that the muffler is correctly attached to
the product.
3. Some mufflers have a special spark arrester screen.
Clean the spark arrester screen at a minimum of one
time a week if your product has this type of muffler.
Use a wire brush.
537 - 005 - 23.05.2018
Cooling system
The product has a cooling system to keep the work
temperature low.
The cooling system has:
B
• Fins on the flywheel (A)
• Cooling fins on the cylinder (B)
• Cylinder cover (C) (directs cold air over the cylinder)
• Muffler plate (D)
To clean the cooling system
WARNING: A dirty or blocked cooling
system causes overheating. It causes
damage to the piston and cylinder.
1. Clean the parts of the cooling system with a brush a
minimum of one time a week.
To clean the air filter
1. Remove the air filter cover and remove the air filter.
2. Clean the air filter with warm soap water. Make sure
that the air filter is dry before you install it.
3. Replace the air filter if it is too dirty to fully clean it.
Always replace a damaged air filter.
4. If your product has a foam air filter, apply air filter oil.
Only apply air filter oil to a foam filter. Do not apply
oil to a felt filter.
C
D
A
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