6
Carburetor
adjustment
(
Fig.
10
)
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.
If
adjustment
is
required,
turn
IDLE
speed
Adjustment
Screw
(T)
close
(clockwise)
to
increase
engine
speed,
open
(counterclockwise)
to
decrease
engine
speed.
Standard
Idle
rpm
is
2800-3200rpm.
T
Fig.
10
RECOMMENDATION
CARBURETOR
ADJUSTMENT
NEEDS
THE
SKILL
OF
EXPERIENCED
OR
WELL
TRAINED
PEOPLE,
OR
IS
RECOMMENDED
TO
TAKE
THE
UNIT
TO
TANAKA
DEALER.
Air
fi
lter
(
Fig.
11
)
The
air
fi
lter
must
be
cleaned
from
dust
and
dirt
in
order
to
avoid:
○
Carburetor
malfunctions
○
Starting
problems
○
Engine
power
reduction
○
Unnecessary
wear
on
the
engine
parts
○
Abnormal
fuel
consumption
Remove
the
air
cleaner
cover
by
pushing
and
pulling
back
the
tab
on
the
top.
Clean
the
air
fi
lter
daily
or
more
often
if
working
in
exceptionally
dusty
areas.
Fig.
11
Cleaning
the
air
fi
lter
Open
the
air
fi
lter
cover
and
the
fi
lter.
Rinse
it
in
warm
soap
suds.
Check
that
the
fi
lter
is
dry
before
reassembly.
An
air
fi
lter
that
has
been
used
for
some
time
cannot
be
cleaned
completely.
Therefore,
it
must
regularly
be
replaced
with
a
new
one.
A
damaged
fi
lter
must
always
be
replaced.
Fuel
fi
lter
(
Fig.
12
)
Drain
all
fuel
from
fuel
tank
and
pull
fuel
fi
lter
line
from
tank.
Pull
fi
lter
element
out
of
holder
assembly
and
rinse
element
in
warm
water
with
detergent.
Rinse
thoroughly
until
all
traces
of
detergent
are
eliminated.
Squeeze,
do
not
wring,
away
excess
water
and
allow
element
to
air
dry.
NOTE
If
element
is
hard
due
to
excessive
dirt
buildup,
replace
it.
Fig.
12
Spark
plug
(
Fig.
13
)
The
spark
plug
condition
is
in
fl
uenced
by:
○
An
incorrect
carburetor
setting
○
Wrong
fuel
mixture
(too
much
oil
in
the
gasoline)
○
A
dirty
air
fi
lter
○
Hard
running
conditions
(such
as
cold
weather)
These
factors
cause
deposits
on
the
spark
plug
electrodes,
which
may
result
in
malfunction
and
starting
di
ffi
culties.
If
the
engine
is
low
on
power,
di
ffi
cult
to
start
or
runs
poorly
at
idling
speed,
always
check
the
spark
plug
fi
rst.
If
the
spark
plug
is
dirty,
clean
it
and
check
the
electrode
gap.
Re-adjust
if
necessary.
The
correct
gap
is
0.6
mm.
The
spark
plug
should
be
replaced
after
about
100
operation
hours
or
earlier
if
the
electrodes
are
badly
eroded.
0.6
mm
Fig.
13
NOTE
In
some
areas,
local
law
requires
using
a
resistor
spark
plug
to
suppress
ignition
signals.
If
this
machine
was
originally
equipped
with
resistor
spark
plug,
use
same
type
of
spark
plug
for
replacement.
Maintenance
schedule
Below
you
will
fi
nd
some
general
maintenance
instructions.
For
further
information
please
contact
your
Tanaka
dealer.
Daily
maintenance
○
Clean
the
exterior
of
the
unit.
○
Check
the
dust
cover
for
damage
or
cracks.
Change
the
cover
in
case
of
impacts
or
cracks.
○
Check
that
nuts
and
screws
are
su
ffi
ciently
tightened.
Weekly
maintenance
○
Check
the
starter,
especially
the
cord.
○
Clean
the
exterior
of
the
spark
plug.
○
Remove
the
spark
plug
and
check
the
electrode
gap.
Adjust
it
to
0.6
mm,
or
change
the
spark
plug.
○
Clean
the
air
fi
lter.
Monthly
maintenance
○
Rinse
the
fuel
tank
with
gasoline,
and
clean
fuel
fi
lter.
○
Clean
the
exterior
of
the
carburetor
and
the
space
around
it.
Quarterly
maintenance
○
Clean
the
cooling
fi
ns
on
the
cylinder.
○
Clean
the
fan
and
the
space
around
it.
○
Clean
the
mu
ffl
er
of
carbon.
CAUTION
Cleaning
of
cylinder
fi
ns,
fan
and
mu
ffl
er
shall
be
done
by
a
Tanaka
dealer.
NOTE
When
ordering
the
parts
to
your
nearest
dealer,
please
use
the
item
No.
showing
on
the
parts
breakdown
section
in
this
instruction.
000Book̲TRB24EAP̲Eng.indb 6
000Book̲TRB24EAP̲Eng.indb 6
2012/06/04 17:44:34
2012/06/04 17:44:34
