Craftsman 917.273481 Owner's Manual page 27

ENGINE
Maintenance, repair, oF"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 establishment or
individual. Warranty repairs must be per-
formed by an authorized engine manufac-
turer's service outlet.
TO ADJUSTTHROTTLE CONTROL
CABLE
The throttle control has been preset at the
factory and adjustment should not be nec-
essary. Check adjustment as described
below before loosening cable. If adjust-
ment is necessary, proceed as follows:
1. With engine not running, move throttle
control lever to fast position.
2. Check that speed control lever is
against stop screw. If it is not, loosen
casing clamp screw and pull throttle
cable until lever is against screw.
Tighten clamp screw securely.
Idle Fuel Adjusting
Needle (If Equipped)
Idle Speed
Screw
TO ADJUST CHOKE CONTROL
The choke control has been preset at the
factory and adjustment should not be nec-
essary, check adjustment as described be-
low before loosening cable. If adjustment
is necessary, proceed as follows:
1. With engine not running, move choke
control (located on dash panel) to full
choke position.
2. Remove air cleaner cover, filter and
cartridge plate to expose carburetor
choke (See "AIR FILTER" in the Main-
tenance section of this manual).
3. Choke should be closed. If it is not,
loosen casing clamp screw and move
choke cable until choke is completely
closed. Tighten casing clamp screw
securely.
4. Reassemble air cleaner.
/
Stop Screw Clamp
Screw
Throttle
Control Cable
Choke
_- Control
Cable
TO ADJUST CARBURETOR
The carburetor has been present at the
factory and adjustment should not be nec-
essary. 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 fuellair
mixture. Turning the adjusting needles out
(counterclockwise) increases the supply
of fuel to the engine giving a richer fuel/air
mixture.
IMPORTANT: Damage to the needles
and the seats in carburetor may result if
screw is turned in too tight.
PRELIMINARY SETTING -
.
Be sure you have a clean air filter, and
the throttle control cable is adjusted
properly (see "TO ADJ UST THROTTLE
CONTROL CABLE" in the Service and
Adjustments section of this manual).
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