Symbol Technologies B450 Brush Cutter User Manual


 
15
CAUTION!
To prevent possible engine damage,
do not allow the machine to run at high
speeds without a load. Avoid operating
the engine at low speeds. Doing so can
lead to rapid clutch wear. In addition,
slow-speed operation tends to cause
grass and debris to wrap around the
cutting attachment.
Operation
WARNING!
“BLADE THRUST” is a sudden
sideway or backward motion of
the machine. Such motion may
occur when the blade jams or catches
on an object such as a sapling tree or
tree stump. BE CONSTANTLY ALERT
FOR BLADE THRUST AND GUARD
AGAINST ITS EFFECTS.
WARNING!
Position the blade so cuts
are made between blade’s
8 o’clock and 10 o’clock
positions (as viewed from above).
DO NOT cut between the 11 o’clock
and 5 o’clock positions.
CAUTION!
DO NOT use 2-tooth blades with this
machine.
(1) After starting the engine, pull
the throttle lever gradually.
The engine speed increases
and the blade will start
rotating.
(2) When the throttle lever is
released, the engine goes
back to idle speed
automatically.
(3) Operate the machine at full
throttle while cutting. Best
fuel efciency is obtained by
releasing the throttle when
swinging back after cut.
(4) The blade rotates
counterclockwise. For best
performance and to minimize
being stuck by debris, move
the blade from right to left
while advancing on your
work.
WARNING!
NEVER strike or slam the
spinning blade against the
wood.
WARNING!
When transporting, make sure
the engine is not running and
blade is covered with blade cover.
Recommended
Cutting Attachments
Make sure to use the following rec-
ommended Shindaiwa cutting attach-
ment with this machine.
Blades
PART NUMBER 60903-98310
8-TOOTH BLADE
INNER BORE: 25.4mm
DIAMETER: 255.0mm
THICKNESS: 2.0mm
PART NUMBER 72430-92142
3-TOOTH BLADE
INNER BORE: 25.4mm
DIAMETER: 255.0mm
THICKNESS: 2.2mm
PART NUMBER 60903-98320
4-TOOTH BLADE
INNER BORE: 25.4mm
DIAMETER: 255.0mm
THICKNESS: 2.0mm
Trimmer Heads
(A) C350
PART NUMBER 78820-16000
TAP & FEED TRIMMER HEAD
BOLT DIAMETER: 10mm
THREAD: LEFT,1.25mm PITCH
(B) B450
PART NUMBER 78820-14000
SEMI-AUTOMATIC TRIMMER HEAD
BOLT DIAMETER: 10mm
THREAD: LEFT,1.25mm PITCH
(C) T350
PART NUMBER 78820-15000
TAP & FEED TRIMMER HEAD
BOLT DIAMETER: 8mm
THREAD: LEFT,1.25mm PITCH
Using A Blade
Direction of
Rotation
DO NOT
CUT
Ten
O'Clock
Eight
O'Clock
OK TO CUT