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Craftsman 917.259870 Owner's Manual page 26

13.5 hp electric start 38" mower 5 speed transaxle lawn tractor

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2. Check that holes "A" in governor control
lever and hole in governor plate line-up.
If holes 'W' are not aligned, loosen clamp
screw and move throttle cable until holes
are aligned. Tighten clamp screw
securely.
Governor
Governor Control Lever
Control Plate
L
J
"
/_'
i,_ ]'1 _1 \
Holes
i
'_
/
_
I_.)_\
.
,,
i
/
/
A
.;_
Throttle
-=
Clamp Screw
Cable
TO ADJUST CARBURETOR
NOTE: The carburetor on this engine is low
emission. It is equipped with an idle fuel
adjusting needle with a limiler 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 fectory
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 fueVair mixture.
Turning the idle mixture valve out (counter-
clockwise) increases the supply of fuel to the
engine giving a richerfueVair mixture.
IMPORTANT:
Damage to the needle valve
and the seat in carburetor may result if screw
is turned in too tight.
PRELIMINARY SETFING -
1. Air cleaner assembly must be assembled
to the carburetor when making carburetor
adjustments.
2. Be sure the throttle control cable is
adjusted propedy (see above).
FINAL SETFING -
1. Start engine and allow to warm for five
minutes. Make final adjustments with
engine running and shift/motiee 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
3. While still holding throttle lever against
idle speed screw, turn idle mixture valve
full travel clockwise then counterclock-
wise until engine runs rough. Turn valve
to a point midway between those two
positions. Release throttle lever.
ACCELERATION TEST -
4. Move throttle control lever from slow to
fast position• If engine hesitates or dies,
turn idle mixture valve out (counterclock-
wise) 1/8 turn. Repeat test and continue
to adjust, if necessary, until engine
accelerates smoothly.
High speed stop is factory adjusted. Do not
adjust - damage may result.
IMPORTANT: Never tamper with the engine
governor, which is factoryset for proper
engine speed. Overspeeding the engine
above the factory high speed setting can be
dangerous. If you think the engine-governed
high speed needs adjusting, contact your
nearest AUTHORIZED service center/
department, which has proper equipment
and experience to make any necessary
adjustments.
Idle Speed Screw
_
hrottle
Lever
{
IN(_::::_I
_'_L._
IdleMixture
26

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