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6.2.1.-Sharpening Instructions
(Fig.PP
19)
IMPORT
ANT:
File
all
cutters
to
the same angle
and depth!
Unequal filing may cause tbe saw
to
6.2-
Sharpening
the
chain
When the
cutting edges of
the blade become
dull,
they can be
re-sharpened
with
a
few strokes of a
file.
In
order
to
keep
the
blade
in
balance,
ail
cutting
edges
must
be sharpened equally.
In
addition,
inspect the chain for correct
adjustment
(more
frequently
with
a
new
cham).
The
chain sho';ld feel
snug
but
still pull
freely.
See Fig.PPI8
Fig.PP17
I.
Filter
element
2,
Rooked wire
Fig.PPI6
I.
Grease
fitti
ng
Fig.PP15
I.
Inspect
t.he
Sprocket
6.1-
50-hour
Maintenance
Every
50 hours of operation (more
frequently
in
dusty or dirty conditions):
I.
Remove
and
clean the
cylinder cover and clean
dirt
and
debris
from
the cylinder cooling
fins.
2.
Remove
the sprocket
cover and
inspect the
sprocket
for excessive
dirt, debris,
or wear.
Remove the guide
bar
and clean
out
the
guide
bar
groove.
3.
If
the
sprocket
is excessively
worn,
replace
it
with
a
new one. (See
Fig.PP
15)
4.
Lubricate the gear
case.
To perform
this operation,
first
remove
the
gear case
from
the
upper
outer
tube
as
follows
(See
Fig.PPI6)
:
-
Follow "Disassembling
the pole sections" section
to
remove the
upper
tube
from
the
gearcase.
-
Using a lever-type
grease gun,
pump
lithium-base grease
(about 10
grams} into the grease fitting
until
you
see
old
grease being
purged from the gear
case,
which can
be
seen in
the
outer tube
cavity.
Clean up
excess
grease,
and then
reassemble
the gear case
onto the
outer
tube
CAUTION!
Make sure
you do
not
pierce the
fuel
line with
the end
of
the
hooked
wire. The
line
is
delicate
and
can
be
damaged
easily.
5.
Use a wire hook
to extract
the
fuel
filter
from inside the
fuel
tank (See
Fig.PP
17).
Inspect the
fuel
filter element
for
signs
of
contamination.
Replace
it
with
a
new
one if
required.
Before
reinstalling the
filter,
inspect the
fuel
line.
If you
find
damage or
deterioration,
remove the unit from service until
it
can
be inspected by
a
trained
service
technician.
Fig.PPI4
VI.
MAINTENANCE
5.7.2-
Flush-cutting
thick
branches
(Fig.PPI4)
If branch diameter
is
more
than
lOcm
(4"),
first
perform
undercut (3)
and cross-cut at a
distance
(A) of about 25cm (10")
from
tbe
final
cut.
Then
carry
out
the
flush-cut
(4), starting
with
a
relieving cut
and
finishing
with
a
cross-cut
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