13
Operation
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.
• 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.
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.
To mix gasoline and two-stroke oil
Gasoline, liter
Two-stroke oil,
liter
4
% (
25
:1)
5
0.
2
0
10
0.
4
0
15
0.
6
0
20
0.
8
0
US gallon
US fl. oz.
1
5
2 1/2
13
5
25
⅞
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.
25
:1
10
10
4
. Fill the gasoline
with
10
scale
.
6
. Shake the fuel mixture.
CAUTION: Do not mix fuel for more than 1
month at a time.
25:1
10
10
2.
Add the
Two -stroke
oil
to the container with10 scale
.
1. Open the oil cap .
3
.
Open the gasoline cap .
5
.
Tighten both cap .
Summary of Contents for WS-ST42G
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