Zenoah BC4350FW Manuale Utente

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2. Rest the unit on a flat, firm place. Keep the
cutting head off the ground and clear of
surrounding objects, as it will start rotating
upon starting of the engine.
3. Open the fuel tank cock. 
(1) Choke lever
(2) Close
(3) Open
(4) Fuel tank cock
(5) Close
(6) Open
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.
(1) Stop switch
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. 
NOTE
IMPORTANT
WARNING
■ STOPPING ENGINE
1. Release the throttle trigger and run the
engine for half a minute.
2. Shift the stop switch to the STOP position.
(1) Stop switch
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.
■ 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. 
NOTE
IMPORTANT
6
Maintenance
(1) Cable adjuster
(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 CHAMPION
RCJ6Y.
• 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))
IMPORTANT
WARNING
0.6~0.7mm
(1)
(1)