Craftsman 917.272083 Owner's Manual page 27

17.0 hp, 42" mower electric start automatic transmission
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TO REMOVE
HOOD AND GRILL AS-
SEMBLY
1. Raise hood.
2.
Unsnap headlight wire connector.
3. Stand in front of tractor. Grasp hood at
sides, tilt toward engine and lift off of
tractor.
4. When
replacing
hood, be sure to
reconnect
the headlight
wire connec-
tor.
Headlight Wire
Connector
ENGINE
Maintenance,
repair, or replacement of the
emission control devices and systems, which
are being done at the customers expanse,
may be performed by any non-road engine
repair establishment
or individual. Warranty
repairs must be performed by an authorized
engine manufacturer's
service outlet.
TO ADJUST
THRO'n'LE
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
necessan/, proceed as follows:
1. With engine not running, move throttle
control lever from slow to choke position.
Slowly move lever from choke to fast
position.
2.
Check to see if hole in throttle lever and
hole in speed control bracket are aligned.
3.
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.
4.
Pull throttle cable up to remove slack and
tighten cable clamp screw. Remove
alignment pencil or drill bit.
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, _de
or load. If the carburetor
does need adjustment,
proceed as follows:
In general, tuming the adjusting needles in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fuel/air mixture.
Tuming the adjusting needles out (counter-
clockwise) increases the supply of fuel to the
engine giving a richer fuel/air mixture.
IMPORTANT:
Damage to the needles and
seats in carburetor may result if turned in too
tight.
NOTE: The carburetor on this engine is low
emission. It is equipped with an idle fuel
adjusting needle with a limlter 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.
1. Be sure you have a dean air filter and the
throttle control cable is adjusted properly
(seeabove).
2. Start engine and allow to warm for five
minutes. Make adjustments with engine
running and shift/motion control lever in
neutral (N) position.
3.
Idle soeed setting - With throttle control
lever in slow
position, engine should idle
at 1750 RPM. If engine idles too slow or
fast, tum idle speed adjusting screw in or
out until correct idle is attained.
4.
Idle fuel needle setting - WRh thro_e
control lever in slow position, lum idle fuel
adjustment needle in (clockwise) until
engine begins to die and then turn out
(counterclockwise)
until engine runs
rough. Turn needle to a point midway
between those two positions.
5.
Recheck idle speed. Readjust if neces-
sary.
27

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