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Crown CT20050 Original Instructions Manual page 16

Gasoline brush cutter / grass trimmer

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  • ENGLISH, page 1
• absence of damages to the elements of the tool;
• absence of fuel leakages;
• correctness of adjustment of carrying belt 20�
Information on fuel mixture
Fuel for the two-stroke engine of the tool
is a mixture of petrol (octane number of
not less than 90) with special motor oil in
a proportion specified in the engineering
data sheet.
• Do not use other oil brands (for example, motor oil
for four-stroke engines or oil for two-stroke engines of
motor boats)�
• Always precisely measure out the volume of the fuel
mixture's components - even a small inaccuracy may
lead to incorrect operation of the engine�
• It is expressly prohibited to use other fuel mixtures
as well as petrol alone for fueling of the tool�
• Do not use the fuel mixture that has been stored for
more than a month�
Non-observance of these rules may lead
to breaking of the engine and deprive
you of the right to warranty repair.
Preparation of the fuel mixture
• Prepare the fuel mixture in container 22� Pour into
container 22 a required quantity of petrol and then add
a required quantity of oil (see the graduations on con-
tainer 22), firmly tighten up the plug and mix (shake up)
the obtained mixture�
• Once again shake the container with the fuel mixture
before pouring the latter into the fuel tank.
Fueling of the tool (see fig. 9)
• Clean the surface around the plug 18 and unscrew
it (see fig. 9).
• Carefully pour the fuel mixture into the filler neck of
fuel tank 19. It is recommended to use a funnel for this.
• Firmly tighten up plug 18�
Switching the tool on / off
Switching on (if the engine is cold) (see fig. 10-11)
• Put the tool on the ground and make sure that the
cutting accessory is not touching any objects�
• Move on / off switch 3 into the "On" position (see
fig. 10.1).
• Move air throttle control lever 16 into the maximum
upward position (see fig. 10.2).
• Press the fuel pump button 37 around 5 times (fuel
pipe 38 shall get filled with the fuel mixture) (see fig. 10.3).
• Press inadvertent actuation throttle interlock 4 and
simultaneously press throttle trigger 1� Keeping these
buttons pressed, press button 2 (see fig. 11.1).
• Release throttle trigger 1 and inadvertent actuation
throttle interlock 4 (at the same time button 2 will re-
main pressed)�
• Press down the tool to the ground with your left hand
(see fig. 11.2). Attention: never press down the tool
to the ground by pressing with your leg on tube 8
or with your knee on engine 9.
• Smoothly draw the handle of starter cord 15 until
you feel resistance�
• Pull at the starter cord 15 several times until initial
ignitions are heard�
• Move air throttle control lever 16 to the maximum
downward position (see fig. 11.3).
• Pull again at the starter cord 15 several times until
the engine starts up (see fig. 11.2).
• Press throttle interlock 4 and after this press on
throttle trigger 1 to automatically release the button 2 to
let the engine warm up� Let engine run for 2-3 minutes
before subjecting it to any load (see fig. 11.4).
Note: during the return movement of the
starter cord 15 do not throw it in order to
avoid damaging parts of tool.
Attention: when throttle trigger 1 is
pressed approximately half-way, there
the cutting accessory starts to rotate,
so be careful. If the cutting accessory is
rotating with throttle trigger 1 fully released (at idle
speed), contact the CROWN service center.
Switching off
• Release throttle trigger 1 - the engine will work at
idle speed�
• Move on / off switch 3 into the "Off" position�
Switching on (if the engine is hot)
If the engine is hot, switch on the tool as described
above, but air throttle control lever 16 shall always be
in the maximum downward position�
Recommendations on the tool operation
General recommendations regarding operation
(see fig. 12)
• Prior to the beginning of the work make sure that
no obstacles are there on the plot, i�e� stones, roots
that stick out of the ground, water hoses, abandoned
garden sundry� All of that can cause injuries or damage
of the tool�
• Always hold the tool firmly by the handles with both
hands and be sure to use carrying belt 20�
• The tool shall be held at the right side of the body
and at some distance from it�
• Switch on the tool as described above�
• Before the beginning of operation wait for some
time for the cutting line or cutting disc to reach the
necessary speed and start mowing only after this�
• Slowly move forward and cut the grass moving the
tool in a pendulum manner to the right and to the left
within the sector of not wider than 60° (see fig. 12).
• Working on a slope, move across (see fig. 12).
• Cut the high grass in several movements�
• If in the process of the work you intend to perform
some actions (to refuel the tool, to collect the mown
grass, etc�), be sure to switch off the tool, wait until the
cutting accessory completely stops and disconnect it
from carrying belt 20�
Operation with the help of the cutting disc
• Cutting disc 21 is used for mowing of high and
hard grass� Do not use the tool for cutting of tree
creepers and springwood otherwise you may get the
tool damaged� Also in this case there increases the
probability of kickback - when cutting disc 21 hits the
English
16

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Ct20051