RedMax Grass Trimmer BT280 - Manual (Page 16)

English---16 115391427 Rev. 4 5/15/12
STARTING AND STOPPING
Warm engine
With a warm engine, move the blue engine
choke lever to the ½ position. Pull starter
rope until engine runs. Move the blue
engine choke lever to the opened position.
WARNING:
When the engine is
started with the choke in the closed
position the cutting attachment will
start to rotate immediately.
Stopping
Stop the engine by pushing and holding
the stop switch in the STOP position until
the engine stops.
MAINTENANCE
Carburetor
Your product has been designed and
manufactured to specifications that reduce
harmful emissions. After the engine has
used 8--10 tanks of fuel, the engine will be
run--in. To ensure that it continues to run at
peak performance and to minimize harmful
exhaust emissions after the run--in period,
ask your servicing dealer to adjust your car-
buretor.
The owner is responsible for the perfor-
mance of all required maintenance as
defined in the operator’s manual.
WARNING: The complete clutch,
clutch cover, and shaft must be
fitted before the machine is started,
otherwise parts could come loose
and cause personal injury.
Function
S The carburetor governs the engine’s
speed via the throttle control. Air and fuel
are mixed in the carburetor.
S The T--screw regulates the throttle setting
at idle speed. If the T--screw is turned
clockwise this gives a higher idle speed;
turning it counterclockwise gives a lower
idle speed.
Basic setting
S The basic carburetor settings are ad-
justed during testing at the factory. Fine
adjustment should be carried out by a
skilled technician.
CAUTION! If the cutting attachment rotates
when the engine is idling the idle adjustment
screw T should be turned counterclockwise
until the cutting attachment stops.
WARNING:
The cutting attach-
ment may be spinning during carbu-
retor adjustments. Wear your protec-
tive equipment and observe all safe-
ty instructions. Be sure the cutting
attachment stops turning when the
engine idles. When the unit is turned
off, make sure the cutting attach-
ments has stopped before the unit is
set down.
Rec. idle speed:
See “Technical data” section.
Recommended max. speed:
See “Technical data” section.
Fine adjustment of the idle speed--T
Adjust the idle speed using the idle adjust-
ment screw--T if it is necessary to readjust.
First, turn the idle adjustment screw--T
clockwise until the cutting attachment starts
to rotate. Then, turn the screw counterc-
lockwise until the cutting attachment stops.
The idle speed is correctly adjusted when
the engine will run smoothly in every posi-
tion. The idle speed should also be well
below the speed at which the cutting at-
tachment starts to rotate.
Idle Speed
Screw--T
WARNING:
Improper mainte-
nance could result in serious engine
damage or in serious injury.