G
G
B
D
E
F
R
I
T
N
L
E
S
P
T
G
R
S
E
D
K
N
O
F
I
11
OPERATING
PROCEDURES
Fuel
(Fig.
18)
WARNING
The trimmer is equipped with a two-stroke engine. Always run
the engine on fuel, which is mixed with oil.
Provide good ventilation, when fueling or handling fuel.
Fuel
○
Always use branded 89 octane unleaded gasoline.
○
Use genuine two-cycle oil or use a mix between 25:1 to 50:1,
please consult the oil bottle for the ratio or Tanaka dealer.
○
If genuine oil is not available, use an anti-oxidant added quality
oil expressly labeled for air-cooled 2-cycle engine use (JASO
FC GRADE OIL or ISO EGC GRADE). Do not use BIA or TCW
(2-stroke water-cooling type) mixed oil.
○
Never use multi-grade oil (10 W/30) or waste oil.
○
Always mix fuel and oil in a separate clean container.
Always start by
fi
ling half the amount of fuel, which is to be used.
Then add the whole amount of oil. Mix (shake) the fuel mixture. Add
the remaining amount of fuel.
Mix (shake) the fuel-mix thoroughly before
fi
lling the fuel tank.
Fueling
WARNING
○
Always shut o
ff
the engine before refueling.
○
Slowly open the fuel tank, when
fi
lling up with fuel, so that
possible over-pressure disappears.
○
Tighten the fuel cap carefully, after fueling.
○
Always move the trimmer at least 3 m from the fueling area
before starting.
Before fueling, clean the tank cap area carefully, to ensure that
no dirt falls into the tank. Make sure that the fuel is well mixed by
shaking the container, before fueling.
Starting
(Fig.
19,
20)
CAUTION
Before starting, make sure the cutting attachment does not
touch anything.
1. Set ignition switch (24) to ON position. (
Fig.
19,
20
)
* Push priming bulb (27) several times so that fuel
fl
ows through
the bulb or return pipe. (If so equipped) (
Fig.
21,
22
)
2. With the safety trigger (25) pressed (if so equipped), pull
throttle trigger and push throttle lock (26), then slowly release
the throttle trigger
fi
rst, then the safety trigger. This will lock the
throttle in starting position.
3. Set choke lever to CLOSED position (28). (
Fig.
21,
22
)
4. Pull recoil starter briskly, taking care to keep the handle in your
grasp and not allowing it to snap back.
5. When you hear the engine want to start, return choke lever to
RUN position (open). Then pull recoil starter briskly again.
NOTE
If engine does not start, repeat procedures from 2 to 5.
6. After starting engine, pull throttle trigger to release throttle lock.
Then allow the engine about 2–3 minutes to warm up before
subjecting it to any load.
Cutting
(Fig.
23,
24,
25,
26)
○
When cutting, operate engine at over 6500 rpm. Extended time
of use at low rpm may wear out the clutch prematurely.
○
Cut grass from right to left.
○
Blade thrust may occur when the spinning blade contacts a
solid object in the critical area.
A dangerous reaction may occur causing the entire unit and
operator to be thrust violently. This reaction is called blade
thrust. As a result, the operator may lose control of the unit
which may cause serious or fatal injury. Blade thrust is more
likely to occur in areas where it is di
ffi
cult to see the material to
be cut.
○
Wear the harness as shown in the
fi
gure (if so equipped). The
blade turns counter-clockwise, therefore, be advised to operate
the unit from right to left for e
ffi
cient cutting. Keep onlookers out
of working area at least 15 m.
NOTE
Press the quick release button or pull emergency release
fl
ap
(If so equipped) in the event of emergency.
(Fig.
25)
WARNING
If cutting attachment should strike against stones or other
debris, stop the engine and make sure that the attachment
and related parts are undamaged. When grass or vines wrap
around attachment, stop engine and attachment and remove
them.
Stopping
(Fig.
27)
Decrease engine speed and run at an idle for a few minutes, then
turn o
ff
ignition switch (24).
WARNING
A cutting attachment can injure while it continues to spin after
the engine is stopped or power control is released. When the
unit is turned o
ff
, make sure the cutting attachment has stopped
before the unit is set down.
MAINTENANCE
MAINTENANCE, REPLACEMENT OR REPAIR OF THE EMISSION
CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED
BY ANY NON-ROAD ENGINE REPAIR ESTABLISHMENT OR
INDIVIDUAL.
Carburetor
adjustment
(Fig.
28)
WARNING
○
The cutting attachment may be spinning during carburetor
adjustments.
○
Never start the engine without the complete clutch cover and
tube assembled! Otherwise the clutch can come loose and
cause personal injuries.
In the carburetor, fuel is mixed with air. When the engine is test
run at the factory, the carburetor is basically adjusted. A further
adjustment may be required, according to climate and altitude. The
carburetor has one adjustment possibility:
T
=
Idle
speed
adjustment
screw.
Idle
speed
adjustment
(T)
Check that the air
fi
lter is clean. When the idle speed is correct, the
cutting attachment will not rotate. If adjustment is required, close
(clockwise) the T-screw, with the engine running, until the cutting
attachment starts to rotate. Open (counter-clockwise) the screw
until the cutting attachment stops. You have reached the correct
idle speed when the engine runs smoothly in all positions well
below the rpm when the cutting attachment starts to rotate.
If the cutting attachment still rotates after idle speed adjustment,
contact your Tanaka dealer.
NOTE
○
Standard Idle rpm is 2500–3000 rpm.
○
(TBC
-
290
/
D
/
S
/
DS,
TBC
-
340
/
D
/
S
/
DS)
The standard openings (returns) of H-screw from lightly seated
position, is as follows. (lf so equipped)
TBC-290/D/S/DS, TBC-340/D/S/DS
H-SCREW
1
000Book̲TBC-270S.indb 11
000Book̲TBC-270S.indb 11
2012/06/21 16:41:58
2012/06/21 16:41:58
