Husqvarna 535RX Operator's Manual page 15

• Do the safety inspections, maintenance and
servicing that are given in this manual.
• Make sure that all covers, guards, handles and the
cutting equipment are correctly attached and not
damaged.
• Make sure that there are no cracks at the bottom of
the saw blade or grass blade teeth or by the center
hole of the blade. Replace the blade if it is damaged.
• Examine the support flange for cracks. Replace the
support flange if it is damaged.
• Make sure that the locknut can not be removed by
hand. If you can remove it by hand, it does not lock
the cutting attachment sufficiently and you must
replace it.
• Examine the blade guard for damages or cracks.
Replace the blade guard if it has been hit or if it has
cracks.
• Examine the trimmer head and cutting attachment
guard for damages or cracks. Replace the trimmer
head and cutting attachment guard if they have been
hit or if they have cracks.
1069 - 005 -
Fuel
This product has a two-stroke engine.
CAUTION: Incorrect type of fuel can result in
engine damage. Use a mixture of gasoline
and two-stroke oil.
Gasoline
CAUTION: Always use a quality gasoline/oil
mixture of at least 90 octane (RON). There
is a risk that use of lower octane grade
causes knocking. This gives rise to high
engine temperature, which can result in
serious engine damage.
CAUTION: If your product is equipped with a
catalytic converter use a good quality
unleaded gasoline/oil mixture. Leaded
gasoline will destroy the catalytic converter.
• Use low-emission gasoline, also know as alkylate
gasoline, if it is available.
• Ethanol blended fuel, E10 may be used (max 10%
ethanol blend). Using ethanol blends higher than
E10 will cause lean running condition which can
damage the engine.
• We recommend a higher octane rating when you do
work at continuous high speed.
Husqvarna alkylate fuel
We recommend you to use Husqvarna alkylate fuel for
best performance. The fuel contains less dangerous
material compared to regular fuel, which decreases
dangerous exhaust fumes. The fuel gives a low quantity
of dangerous remainings when it is combusted, which
keeps the components of the engine more clean. This
extends the life of the engine. Husqvarna alkylate fuel is
not available in all markets.
Two-stroke oil
CAUTION: Unsatisfactory oil quality and/or
incorrect oil/fuel ratio can damage the
product and decrease the life time of
catalytic converters.
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