Symbol Technologies B450 Brush Cutter User Manual


 
13
WARNING!
MAKE SURE THE BLADE
IS WELL CLEAR OF ANY
INTERFERENCE. Before starting
the engine, place unit on clear, level
surface. Make sure you have good
secure footing and always keep a rm
grip on the machine. THE CUTTING
ATTACHMENT MAY ROTATE WHEN
THE ENGINE STARTS.
Starting the Engine
WARNING!
Move at least three meters
away from the fuel site before
starting the engine.
WARNING!
Never operate the engine
without the cutting attach-
ment installed.
Starting a Cold Engine and/or
Restarting After Refueling.
(a) Slide the ON-OFF switch to the “I”
position.
(b) Prime the engine by repeatedly de-
pressing the carburetor primer bulb
until fuel can be seen owing through
the transparent overow return tube:
(c) Push the choke lever upward
(“ closed“ position). (Cold engine.)
(d) Depressing the lock lever, pull the
throttle lever fully and depress the
throttle lock button. While depressing
the throttle lock button, release the
throttle lever and the lock lever. Now
the throttle stays at high idle (starting
speed).
(e) While rmly holding the outer tube
with one hand, pull the recoil starter
handle upward with your other hand.
Pull slowly at rst until you feel the
starter engage, then pull quickly
to start the engine. Do not pull the
starter rope to the end of its travel.
CAUTION!
Pulling the starter rope to the end
of its travel may damage the starter
mechanism.
IMPORTANT!
Repeated cranking of the engine with
the choke CLOSED (“ “) will lead to
engine ooding. If the engine fails to
start after several attempts, move the
choke lever to the OPEN position and
continue cranking.
(f) When the engine rst res, gradu-
ally return the choke to OPEN
(“ ”) position if you have not al-
ready done so.
• If the engine stops before the choke
is fully open, restart with the choke
closed.
• If the engine stops after the initial
ring, restart with choke closed.
(g) When the engine starts and is run-
ning, set the engine to idle by tap-
ping the throttle lever to release the
throttle lock.
WARNING!
Never start the engine from
the operating position.
Starting a Warm Engine
Starting a warm engine involves all of
the steps of starting a cold engine.
EXCEPT:
• The choke should be in the OPEN
position.
If the engine does not start, follow the
cold engine starting procedure.
When the engine starts:
• After the engine starts, disengage
the throttle lock and allow the engine
to warm-up at idle for 2 or 3 minutes
before operating the machine.
• After the engine is warm, pick up
the machine and clip-on the strap.
• Advancing the throttle makes the
cutting attachment rotate faster; re-
leasing the throttle makes the attach-
ment stop running. If the cutting at-
tachment continues to rotate, carbu-
retor idle speed should be adjusted.
(See next page.)
T350
C350/B450
OVERFLOW PIPE
Make sure the cutting
attachment is clear
of obstructions.
OVERFLOW TUBE
ON-OFF SWITCH
THROTTLE
LEVER
LOCK LEVER
THROTTLE LOCK
BUTTON