Husqvarna 543 XP Operator's Manual page 11

To mix fuel
Gasoline
• Use good quality unleaded gasoline with a maximum
of 10% ethanol contents.
CAUTION: Do not use gasoline with an
octane grade less than 90 RON/87 AKI.
Use of a lower octane grade can cause
engine knocking, which causes engine
damages.
• We recommend that you use gasoline of a higher
octane grade for work with continuously high rpm.
Two-stroke oil
• For best results and performance use Husqvarna
two-stroke oil.
• If Husqvarna two-stroke oil is not available, use a
two-stroke oil of good quality for air-cooled engines.
Speak to your servicing dealer to select the correct
oil.
CAUTION: Do not use two-stroke oil for
water-cooled outboard engines, also
referred to as outboard oil. Do not use oil
for four-stroke engines.
To mix gasoline and two-stroke oil
Gasoline, liter
5
10
15
20
US gallon
1
2 1/2
5
CAUTION: Small errors can influence the
ratio of the mixture drastically when you mix
small quantities of fuel. Measure the quantity
of oil carefully and make sure that you get
the correct mixture.
956 - 001 - 13.11.2018
1. Fill half the quantity of gasoline in a clean container
2. Add the full quantity of oil.
3. Shake the fuel mixture.
4. Add the remaining quantity of gasoline to the
5. Carefully shake the fuel mixture.
To fill the fuel tank
1. Clean the area around the fuel tank cap.
Two-stroke
oil, liter
2% (50:1)
0.10
0.20
2. Shake the container and make sure that the fuel is
0.30
3. Tighten the fuel tank cap carefully.
0.40
4. Move the product 3 m/10 ft or more away from the
US fl. oz.
2 ½
Note: To see where the fuel tank is on you product,
refer to
6 ½
12 ⅞
To do a run-in
•
To use the correct chain oil
for fuel.
container.
CAUTION: Do not mix fuel for more than 1
month at a time.
fully mixed.
refueling area and fuel source before starting.
Product overview on page 2 .
During the first 10 hours of operation, do not apply
full throttle without load for extended periods.
WARNING: Do not use waste oil, which can
cause injury to you and the environment.
Waste oil also causes damage to the oil
pump, the guide bar and the saw chain.
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