Zenoah BC2311LE Manuale Utente

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the head and cause the clutch to slip, resulting
in damage to the clutch system if repeated
frequently.
ADJUSTING THE LINE LENGTH
• Your brushcutters is equipped with a semi- auto
type nylon line head that allows the operator to
advance the line without stopping the engine.
When the line becomes short, lightly tap the
head on the ground while running the engine at
full throttle.
• Each time the head is bumped, the line
advance about 1 inch(25.4 mm). For better
effect, tap the head on bear ground or hard soil.
Avoid bumping in thick, tall grass as the engine
may stall by overload.
4. Move the choke lever to the closed position.
5. Set the stop switch to the “RUN” position. 
Place the unit on a flat, firm place.
Keep the cutting head clear of everything
around it.
6. While holding the unit firmly, pull out the starter
rope quickly until engine fires.
The product is equipped with a centrifugal
clutch mechanism, so the cutting attachment
begins to rotate as soon as the engine is
started by putting the throttle into the start
position. When starting the engine, place the
product onto the ground in a flat clear area
and hold it firmly in place so as to ensure that
neither the cutting part nor the throttle come
into contact with any obstacle when the engine
starts.
Avoid pulling the rope to its end or returning it by
releasing the knob. Such actions can cause starter
failures.
7. Move the choke lever downward to open the
choke. And restart engine.
8. Allow the engine to warm up for a several
minutes before starting operation.
1. When restarting the engine immediately after
stopping it, leave the choke open.
2. Overchoking can make the engine hard to start
due to excess fuel. When the engine failed to
start after several attempts, open the choke and
repeat pulling the rope, or remove the spark
plug and dry it. 
■ STOPPING ENGINE
1. Release the throttle trigger and run the engine
for half a minute.
2. Shift the stop switch to the STOP position.
Except for an emergency, avoid stopping the
engine while pulling the throttle lever.
■ ADJUSTING THROTTLE CABLE
• The normal play is 1 or 2 mm when measured
at the carburetor side end. Readjust with the
cable adjuster as required.
IMPORTANT
NOTE
IMPORTANT
WARNING
■ ADJUSTING IDLING SPEED
1. When the engine tends to stop frequently at
idling mode, turn the adjusting screw clockwise.
2. When the cutting head keeps rotating after
releasing the trigger, turn the adjusting screw
counter-clockwise.
Warm up the engine before adjusting the idling
speed.
■ CUTTING WORK 
• By using the shoulder strap, hang the unit on
your right side. Adjust the strap length so that
the cutting head may become parallel to the
ground. 
(1) Shoulder strap
• Choose a suitable recommended cutting
attachment according to the object to be cut.
Never use other cutting attachment not
approved by ZENOAH. 
■ LINE HEAD USAGE
1. Always wear eye protection such as safety
goggles. Never lean over the rotating cutting
head. Rocks or other debris could be thrown
into eyes and face and cause serious
personal injury.
2. Keep the debris guard attached in place at
all times when the unit is operated.
TRIMMING GRASS AND WEEDS
• Always remember that the TIP of  the line does
cutting. You will achieve better results by not
crowding the line into the cutting area. Allow the
unit to trim at its own pace.
1. Hold the unit so the head is off the ground and
is tilted about 20 degrees toward the sweep
direction.
2. Use full throttle when cutting.
3. You can avoid thrown debris by sweeping from
your left to the right.
4. Use a slow, deliberate action to cut heavy
growth. The rate of cutting motion will depend
on the material being cut. Heavy growth will
require slower action than will light growth.
5. Never swing the unit so hard as you are in
danger of losing your balance or control of the
unit.
6. Try to control the cutting motion with the hip
rather than placing the full workload on the arm
and hands.
7. Take precautions to avoid wire, grass and
dead, dry, long-stem weeds from wrapping
around the head shaft. Such materials can stall
WARNING
NOTE
6
Maintenance
(1)
(1)
(1) Stop switch
(1)
(1)
(1) Stop switch
(1) Cable adjuster
(1) Cable adjuster
1~2mm
(1)
(1) Idle adjusting screw
Make sure that the engine has stopped and is
cool before performing any service to the
machine. Contact with moving cutting head or
hot muffler may result in a personal injury.
■ AIR FILTER
The air filter, if clogged,
will reduce the engine
performance. Check and
clean the filter element in
warm, soapy water as
required. Dry completely
before installing. If the
element is broken or
shrunk, replace with a
new one.
(1) Air filter
■ FUEL FILTER
When the engine runs
short of fuel supply,
check the fuel cap and
the fuel filter for
blockage.
(1) Fuel filter
■ SPARK PLUG
Starting failure and misfiring
are often caused by a fouled
spark plug. Clean the spark
plug and check that the plug
gap is in the correct range.
For a replacement plug, use
the correct type specified by
ZENOAH.
REPLACEMENT PLUG IS A NGK BPMR7A.
• Note that using any spark plug other than those
designated may result in the engine failing to
operate properly or in the engine becoming
overheated and damaged.
• To install the spark plug,
first turn the plug until it is
finger tight, then tighten it a
quarter turn more with a
socket wrench.
Tightning torque: 9.8~11.8N.m. (1.0~1.2kgm))
■ REFILLING TRIMMING LINE
1. For replacement line, use a diameter of 2.4mm.
The spool is capable for a line upto 6m on the
4” head. Avoid using a larger line as it may cut
down the trimming performance. 
2. Pinch the slotted area on the both sides of the
spool housing to unhook the bottom cap.
3. Take out the spool and pull off the old line. Put
one end of new line through the spool holes
and pull it until the length is equal between
each part of the line.
4. Wind up the line in the correct direction as
indicated on the spool.
5. Hook each end of the line in the slot on the
edge of the spool, and then put the ends
IMPORTANT
WARNING
0.6~0.7mm