10
○
Unnecessary
wear
on
the
engine
parts
○
Abnormal
fuel
consumption
32
Fig.
28
Clean
the
air
fi
lter
daily
or
more
often
if
working
in
exceptionally
dusty
areas.
Cleaning
the
air
fi
lter
Remove
the
air
fi
lter
cover
and
the
fi
lter
(32).
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.
29
)
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.
Fig.
29
NOTE
If
element
is
hard
due
to
excessive
dirt
build-up,
replace
it.
Chain
oil
fi
lter
(
Fig.
30
)
Remove
the
oil
fi
lter
and
thoroughly
wash
it
in
solvent.
Fig.
30
Spark
plug
(
Fig.
31
)
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.
31
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.
Mu
ffl
er
(
Fig.
32
)
Remove
the
mu
ffl
er
and
clean
out
any
excess
carbon
from
the
exhaust
port
or
mu
ffl
er
inlet
every
100
hours
of
operation.
Fig.
32
Cylinder
(
Engine
cooling
) (
Fig.
33
)
The
engine
is
air
cooled
and
air
must
circulate
freely
around
engine
and
over
cooling
fi
ns
on
cylinder
head
to
prevent
overheating.
Every
100
operating
hours,
or
once
a
year
(more
often
if
conditions
require)
clean
fi
ns
and
external
surfaces
of
engine
of
dust,
dirt
and
oil
deposits
which
can
contribute
to
improper
cooling.
Fig.
33
000Book̲TCS27EPA(S)̲Eng.indb 10
000Book̲TCS27EPA(S)̲Eng.indb 10
2012/04/04 16:47:15
2012/04/04 16:47:15
