Craftsman 917.271050 - Manual (Page 25)

Maintenance, repair, or replacement of
the emission control devices and
systems, which are being done at the
customers expense, may be performed
by any non-road engine repair establish­
ment or individual. Warranty repairs must
be performed by an authorized engine
manufacturer's service outlet.
ENGINE
TO ADJUST THROTTLE CONTROL
CABLE
The throttle control has been preset at
the factory and adjustment should not be
necessary. Check adjustment as
described below before loosening cable.
If adjustment is necessary, proceed as
follows:
• With engine not running, move throttle
control lever from slow to choke
position. Slowly move lever from
choke to fast position.
• Check to see if hole in throttle lever
and hole in speed control bracket are
aligned.
• If holes are not aligned, loosen cable
clamp screw and align the holes by
inserting a pencil or a 1/4" drill bit
through both holes.
• Pull throttle cable up to remove slack
and tighten cable clamp screw.
Remove alignment pencil or drill bit.
Cable
Clamp
Screw
Speed Control
Bracket
TO ADJUST CARBURETOR
The carburetor has been preset at the
factory and adjustment should not be
necessary. However, minor adjustment
may be required to compensate for
differences in fuel, temperature, altitude
or load. If the carburetor does need
adjustment, proceed as follows:
In general, turning the adjusting needles
in {clockwise) decreases the supply of
fuel to the engine giving a leaner fuel/ajr
mixture. Turning the adjusting needles
out (counterclockwise) increases the
supply of fuel to the engine giving a
richer fuel/atr mixture.
IMPORTANT: Damage to the needles
and the seats in carburetor may result if
needle is turned in too tight.
NOTE: The carburetor on this engine is
low emission. It is equipped with an idle
fuel adjusting needle with a limiter cap,
which allows some adjustment within
the limits allowed by the cap. Do not
attempt to remove the limiter cap. The
limiter cap cannot be removed without
breaking the adjusting needle.
• Be sure you have a clean air filter and
the throttle control cable is adjusted
properly {see above).
• Start engine and allow to warm for five
minutes. Make adjustments with
engine running and shift/motion
control lever in neutral (N) position.
• Idle speed_setting - With throttle
control lever in slow position, engine
should idle at 1750 RPM. If engine
idles too slow or fast, turn idle speed
adjusting screw in or out until correct
idle is attained.
Throttle
Lever
25