Husqvarna 535RX Operator's Manual page 23

2. Make sure that the cooling system is not dirty or
blocked.
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 the product if the
spark arrester screen 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 arrester screen,
clean the spark arrester screen weekly.
4. Replace a damaged spark arrester screen.
CAUTION: If the spark arrester screen is
blocked, the product becomes too hot and
this causes damage to the cylinder and
piston.
Air filter
Remove dust and dirt from the air filter to keep it clean in
order to prevent:
• Carburettor malfunctions.
• Starting problems.
• Loss of engine power.
• Unnecessary wear to engine parts.
• Too much fuel consumption.
Clean the air filter at an interval of 25 hours, or more
regularly if conditions are unusually dusty.
1069 - 005 -
To clean the air filter
Clean the air filter regularly from dirt and dust. This
prevents carburetor malfunctions, starting problems,
loss of engine power, wear to engine parts and more
fuel consumption than usual.
• Clean the air filter at an interval of 25 hours, or more
regularly if you operate the product in conditions with
much dust.
To apply oil to the air filter
CAUTION: Always use Husqvarna special
air-filter oil. Do not use other types of oil.
WARNING: Put on protective gloves. The
air-filter oil can cause skin irritation.
1. Put the air filter in a plastic bag.
2. Put the oil in the plastic bag.
3. Rub the plastic bag to supply the oil equally across
the air filter.
4. Push the unwanted oil out of the air filter while in the
plastic bag.
Bevel gear
The bevel gear is filled with the right quantity of grease
at the factory. But, before you use the product, make
sure that the bevel gear is 3/4 full with grease. Use
Husqvarna special grease.
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