Craftsman 917.270840 - Manual (Page 28)

TO REMOVE HOOD AND GRILL AS­
SEMBLY
• Raise hood.
• Unsnap headlight wire connector.
• Stand in front of tractor. Grasp hood at
sides, tilt toward engine and lift off of
tractor.
• To replace, reverse above procedures.
Clamp Screw
Quarter Circle
Hood
Headlight
Wire
Connector
ENGINE
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 establishment or indi­
vidual. Warranty repairs must be per­
formed by an authorized engine manufac­
turer's service outlet.
TO ADJUST THROTTLE 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:
• With engine not running, move throttle
control lever to fast position.
• Check that swivel is against side of
quarter circle. If it is not, loosen cable
clamp screw and pull cable back until
swivel is against quarter circle. Tighten
cable clamp screw securely.
TO ADJUST CHOKE CONTROL
The choke 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:
• With engine not running, move choke
control (located on dasn panel) to full
choke position.
• Remove air cleaner cover, filter and car­
tridge plate to expose carburetor choke
(see “AIR FILTER" in the Customer
Responsibilities 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 se­
curely.
• Reassemble air cleaner.
Swivel
Choke Closed
Casing Clamp
Screw
Choke Lever
TO ADJUST CARBURETOR
The carburetor has been preset at the fac­
tory and adjustment should not be neces­
sary. 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 mixture screw in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fuel/atr mixture.
Turning the mixture screw out (counter­
clockwise) 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 and choke are
adjusted properly (see above).
• With engine off turn idle mixture screw
in (clockwise) closing it finger tight and
then turn out (counterclockwise) 1-1/4
to 1-1/2 turns.
FINAL SETTING
• Start engine and allow to warm for five
minutes. Make final adjustments with
engine running and shift/ motion control
lever in neutral (N) position.
• With throttle control lever in slow posi­
tion, hold throttle lever against idle
speed screw and adjust idle speed
screw to obtain 1200 to 1400 RPM.
28