To Remove Hood And Grill Assembly; To Adjust Throttle Control Cable; To Adjust Carburetor - Craftsman 917.271661 Operator's Manual

Lawn tractor 17.0 hp, 42" mower electric start automatic transmission
Table of Contents

Advertisement

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 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 from slow to choke
position.
Slowly move lever from
choke to fast position.
2. Check that holes "A"
in governor
control
lever and hole in governor
plate line-up.
If holes "A" are not
aligned,
loosen
clamp screw
and
move throttle
cable until
holes are
aligned.
Tighten
clamp screw
securely.
Governor
Governor Control Plate
_ttle Cable
Holes "A"
Clamp Screw
TO ADJUST
CARBURETOR
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.
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 idle mixture valve in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fuel/air mixture.
Tuming the idle mixture valve out (counter-
clockwise) increases the supply of fuel to the
engine giving a richer fuel/air mixture.
IMPORTANT:
Damage to the needle valve
and the seat in carburetor may result if screw
is turned in too tight.
PRELIMINARY SETIING
-
1. Air cleaner
assembly
must be as-
sembled
to the carburetor
when
making
carburetor
adjustments.
2.
Be sure the throttle
control cable is
adjusted
properly
(see above).
FINAL SETIING
-(See 'qO ADJUST
THROTTLE
CONTROL CABLE" in this
section of the manual.)
1. Start engine and allow to warm for five
minutes.
Make final adjustments
with
engine
running
and shift/motion
control
lever in neutral
(N) position.
2.
Move throttle control
lever to slow
position.
With finger, rotate and hold
throttle
lever
against idle speed
screw. Turn idle speed screw to attain
1750 RPM.
27

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents