Tabla de contenido
Publicidad
Idiomas disponibles
Idiomas disponibles
TO ADJUST CARBURETOR
The carburetor (see figure below) has been
pre-set at the factory and readjustment
should not be necessary. However, if the
carburetor does need to be adjusted, pro-
ceed as follows:
• Close the high speed adjusting screw by
hand.
Carburetor
Idle Adjusting Screw
finger tight only)
Carburetor Bowl
High Speed Adjusting Screw
(Close finger tight only)
- Do not over-tighten.
, Then open it 1-1/4to
1-1/2turns.
- Close the idte adjusting
screw by hand.
Do not over-tighten.
• Then open it 1-1/4to
1-1/2turns_
• Start the engine
and let it warm up.
• Set the throttle
control
to '_
(FAST).
Ad-
just the high speed
adjusting
screw in un-
til the engine speed
or sound alters. Ad-
just the screw out until the engine speed
sound alters.
Note the difference
between
the two limits and set the screw in the
middle of the range.
,, Let the engine
run undisturbed
for 30
seconds after each setting
to allow the
engine to react to the previous
adjust-
ment.
Set the throttle control
to _
(SLOW).
Adjust the idle adjusting
screw in until the
engine speed drops, then adjust the
screw out until the engine speed drops.
Note the difference
between
the two lim-
its and set the screw in the middle of the
range.
If the engine tends to stall under load or
does not accelerate from low speed to
high speed properly, adjust the high
speed screw out in 1/8 turn increments
until the problem is resolved. Let the en-
gine run for 30 seconds between settings.
IMPORTANT:
Never tamper with the en-
gine governor;
which is factory set for
proper
engine speed. Overspeeding
the
engine above the factory high speed setting
can be dangerous,
tf you think the engine-
governed
high speed needs adjusting,
con-
tact your nearest Sears
Service
Center,
which has the proper equipment
and experi-
ence to make any necessary
adjustments.
TO ADJUST OR REPLACE
THE
SPARK PLUG
if you have difficulty starting your snow
thrower, you may need to adjust or replace
the spark plug. Follow the instructions be-
tow.
Replace
the spark plug if the electrodes
are
pitted or burned
or if the porcelain
is
cracked.
TO ADJUST:
Clean the spark plug by carefully
scraping
the electrodes
(do not sand blast or use a
wire brush).
Be sure the spark plug is clean and free
of foreign
material.
Check the electrodes
gap (see figure below) with a wire feeler
gauge and reset the gap to .030 inch if
necessary.
TO REPLACE:
- if you need a new spark ptug, use only
the proper replacement spark plug (See
page 14).
• Set the gap to .030.
° Before installing the spark ptug, coat its
threads lightly with oil or grease to insure
easy removal.
. Tighten the plug firmly into the engine.
- If a torque wrench is available, torque the
plug to18 to 23 ft_- tbs,
21
Publicidad
Tabla de contenido
