Craftsman 917.275021 - Manual (Page 30)

ENGINE
Maintenance, repair, or replacement of
the emission control devices and sys­
tems, 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.
TO ADJUST THROTTLE CONTROL
CABLE
The throttle control has been preset at the
factory and adjustment should not be
necessary. Check adjustment as de­
scribed below before loosening cable. If
adjustment 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 damp screw securely.
idle Fuel Adjusting
Needle jdie speed Adjusting
Screw
Stop
Screw
Throttle
Control
Cable
Clamp Screw
Choke Control Cable
TO ADJUST CHOKE CONTROL
The choke control has been preset at the
factory and adjustment should not be
necessary, check adjustment as de­
scribed below 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
Maintenance section of this manual).
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.
Reassemble air cleaner.
3.
4.
Closed for Full
Choke
TO ADJUST CARBURETOR
The carburetor has been present 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/air
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 -
1. Be sure you have a clean air filter, and
the throttle control cable is adjusted
properly (see “TO ADJUST
THROTTLE CONTROL CABLE” in the
Service and Adjustments section of
this manual).
2. With engine off turn idle fuel adjusting
needle in (clockwise) closing it finger
tight and then turn out (counterclock­
wise) 1 turn.
FINAL SETTING-
1. Start engine and aliow to warm for five
minutes. Make final adjustments with
engine running and shift/motion
control lever in neutral (N) position.
30