Craftsman 536.886140 - Manual (Page 21)

TO ADJUST CARBURETOR
If you think your carburetor needs adjusting,
see your nearest Authorized Craftsman
Service Center. Engine performance shouid
not be affected at altitudes up to 7,000 feet.
For operation at higher elevations, contact
your Authorized Craftsman Service Center.
IMPORTANT: Never tamper with the engine
governor, which is factory set for proper en­
gine speed. Overspeeding the engine
above the factory high speed setting can be
dangerous. If you think the engine-governed
high speed needs adjusting, contact your
nearest Craftsman Service Center, which
has the proper equipment and experience to
make any necessary adjustments.
TO ADJUST OR REPLACE THE
SPARK PLUG
NOTICE: This spark ignition system meets
all requirements of the Canadian Interfer­
ence-Causing Equipment Regulations.
NOTICE: This engine complies with all cur­
rent Australian and New Zealand limitaions
regarding electromagnetic interference. If
you have difficulty starting your snow
thrower, you may need to adjust or replace
the spark plug. Follow the instructions be­
low.
Replace the spark plug if the electrodes are
pitted or burned or if the porcelain is
cracked.
TO ADJUST:
* Clean the spark plug by carcfu!!y scrap­
ing the electrodes (do not sand bl'ist 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 plug, use only
the proper replacement spark plug (See
page 14).
• Set the gap to .030 inches.
• Before installing the spark plug, 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 to 18 to 23 ft. - lbs.
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