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MAfN_-ENANCE
Carburetor
Adjustment
_"
BE CAREFUL!
The chain will be moving
daring
this
procedure.
1,
Stop the engine.
2.
Remove
the carburetor cover (Figure
7), Turn
the high
speed
(Figure
8}
and
low
speed
mixture
screws
clockwise
_
(Figure "8} until they stop. Don't
tighten
them. you may damage the needle seats]
3.
Turn the high speed and low speed mixture
screws one fu II
tUrn counterclockwise
_
.
4.
Start the engine, if it stops, increase the idle speed (Figure
•. '!8} by turning the idle Speed screw clockwise
_
. Keep
dirt and _awdust away ¢rom the carburetor while the covet
;-;
is removed.
5.
Run
the engine
for a few
minutes to bring
it up to
operating temperature.
6.
Set
the idle speed as fast as possible without
the chain
moving.
Turn
the idle speed screw clockwise
_
for
faster idle. counterclockwise
1€_
for slower idle.
7.
Squeeze the trigger quickly.
If the engine stops, restart it.
The engine should
accelerate without
hesitating when the
trigger
is squeezed.
If _ does not, turn
the low
Speed
mixture
screw counterclockwise
_
1/16 of a tUrn and
d3eck the aocaleration
again. If the idle speed slows while
adjusting
the Jow speed mixture,
reset the idle speed as in
step 6. Continue
step 7 until acceleration
is smooth.
8,
Make
a test
cut v_ith the saw {keep
sawdust out of the
carbu[etor!)
9.
If the engine
seems to smoke excessively
in the cut, turn
• the high speed mixture
screw clockwise
_
I/t6
of a
turn.
Repeat step 8 and 9, if necessary. WARNING:
The
high speed needle must never be less than 7/8 turn open.
Too lean of a setting will quickly ruin tl_e engine.
10.
If
the engine
seems to weaken
or
lose power
in the
cut,
turn
the
high
speed mixtUre
screw
Counterclock-
wise
_
f/16
of a turn
at a time until the saw cu_s
smoothly.
The high speed mi×ture
screw should
not be
open
more
than
1¼ turns
(counterclockwise
_
}
from the stopped position in step 2.
1 I.
Reset the idle speed (see step 6).
Re+-_
ca_aretor
c_,er
_v
Incorrect
placement of _
co_er,will prevent the choke
•
from working,
r"
.....
"
1. Move
the choke knob all the way i_ the e_hoke direction.
2.
Move the choke shutter
to the choke closed position (See
Figure 8).
3,
Place the cover on the saw and tighten
the screw&
4.
Check the operation
of the choke. If the knob sticks or
won't
move, remove the cover and repeat
the procedure
above,
Air Filter
Clean the air filter
aflcer every 10 tanks of gas or every
• 5 hours of operation.
1.
Remove
the
carburetor
Cover and
pal!
out
the fi_ter
:
(Fig ure g).
2.
DO NOT clean your
filter
in gasoline or other flammable
solvent.
8tow
the dirt off
with
compressed
air
or wash
filter
in soap and water,
3. Note:
The
filter
is o;I soaked.
It must
be resoaked
after
cleaning.
Else 30W oil or _.'-'_in oil. Soak the filter
with oii
then squeeze out completely.
4.
Replace the filter and carburetor
cover_
Choke Closed
Figu
re
Figure 8 _
7_
High speed
Mix Screw
I_ow Speed
Mix Screw
FIghre
9
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