Husqvarna 553RBX Operating Instructions Manual page 16
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Also See for 553RBX:
- Operator's manual (206 pages) ,
- Workshop manual (72 pages) ,
- Operator's manual (284 pages)
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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.
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.
16
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.
CAUTION: Do not use two-stroke oil for
water-cooled outboard engines, also
referred to as outboard oil.
CAUTION: Do not use oil for four-stroke
engines.
•
For best results and performance use Husqvarna
two-stroke oil.
•
If Husqvarna two-stroke oil is not available, use a
different two-stroke oil of good quality for air-cooled
engines. Speak to your servicing dealer to select the
correct oil.
Gasoline, l
Two-stroke oil, l
2% (50:1)
1104 - 001 - 11.04.2019
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