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CARBURETOR ADJUSTMENTS
All
carburetors
are
tested and adjusted
at the
factory.
Little readjustment,
if any,
will be
required.
1.
Idle
speed adjusting
screw controls
the
idling
speed
only (figure 8).
To
adjust,
back
the
screw off approximately
two
turns, then turn
slowly to the
right until
the
throttle
arm
just
starts
to move,
then
give
an additional
1-1/2
tUl11Sto
the
right.
2. High speed adjusting
screw
controls
fuel mixture when
the
throttle is
open
(figure
8). To adjust, shut off gently, then open 1-1/4
turns.
This may vary slightly
for
individual chain
saws
under full load.
3. Slow speed adjusting
screw controls
the
fuel
mixture at idling speeds (figure 8).
To adjust, shut off gently, then open
3/4 to
one
full
turn.
This
may
change
slightly
according
to
the
individual chain
saw and operator.
Excessive smoking,
lack
of power,
and
excessive
vibration
indicates
that the
carbure-
tor fuel mixture
adjustments
aloe set
too
rich.
No power, and stalls
easily
under load
indicates
that carburetor
fuel
mixture adjustments
are
set too
lean.
OPERATING
INSTRUCTIONS
If
you
have
not
previously
operated a chain
saw
cut a few
stove lengths
from a small
log to get
the
feel
of
the
chain
saw
action.
When starting
a
cut, don't race
the
motor
and
jam
the saw into
the
wood. Bring
the
motor
up
to
full
throttle,
place the pivot
grip against
the
timber
being cut,
and
start
the cut easily.
Your chain saw is a direct
drive
type and because of
its
high speed
cutting
action,
don't exert pressure
to force it
through
wood. A light, but firm
touch will
get
more
wood
cut
with
less
physical effort.
When coming to the
end of
a
cut,
be
prepared
to
release
the
throttle
immediately
after
the cut is finished.
Be generous
with the chain
oil.
Check
the reserve
supply
frequently.
In cutting
pitchy wood or
in cold
weather, thin the
chain
oil with kerosene.
The
kerosene
helps
the
oil
flow more freely in cold
weather
and
in
pitchy wood it helps
keep
resin
from
fouling
the
chain.
3
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