Throttle Control Cable - Craftsman EZ3 917.258473 Owner's Manual

Ez3
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SERVICE AND ADJUSTM
ENGINE
TO ADJUST
THROTTLE
CONTROL
CABLE
(See Fig. 31)
The throttle contro! has been preset at the factory and
adjustment should not be necessary. Check adjustment as
described below before loosening cable° tf adjustment is
necessary, proceed as follows:
With engine not running, move throttle control lever
from slow to choke position, Slowly move lever from
choke to fast position°
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 movethrottle cable until holes
are aligne& Tighten clamp screw securely°
GOVERNOR
CONTROL LEVER
GOVERNOR
CONTROL PLATE
HOLES *'A"
CLAMP
SCREW
THROTTLE
CABLE
FIG. 31
TO ADJUST CARBURETOR
(See Fig. 32)
The carburetor has been preset at the factory and adjust-
ment should not be necessary. However, minor adjust-
ment may be required tocompensate for differences infuel,
temperature, altitude or load. if the carburetor does need
adjustment, proceed as follows:
In general, turning idle mixture valve in (clockwise) de-
creases the supply offuel tothe engine givinga leaner rue!/
air mixture. Turning 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 SETTING -
Air cleaner assembly must be assembled to the carbu-
retor when making carburetor adjustments_
Be sure the throttle control cable is adjusted propedy
(see above),
o
With engine off turn idle mixture valve in (clockwise)
closing it finger tight and then turn out (counterclock_
wise) 1 full tum.
FINAL SETTING -
.o
Start engine and allow to warm for five minutes. Make
final adjustments with engine running and shift/motion
control lever in neutral (N) position.
*
Move throttle control leverto stow position. With finger,
rotate and ho[d throttle lever against idlespeed screwy
Turn idle speed screw to attain 1750 RPM
°
While still holding throttle lever' against idle speed
screw, turn idle mixture vaive in (clockwise) until en-
gine begins to die and then turn out (counterclockwise)
until engine runs rough. Turn valve to a point midway
between those two positions, Release throttle lever,
ACCELERATION TEST -
Move throttle control lever from slow to fast position.
If
engine
hesitates
or dies, turn idle mixture
valve out
(counterclockwise)
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 FACTORY
SET FOR PROPER
ENGINE SPEED.
OVERSPEEDING
THE ENGINE ABOVE
THE
FACTORY
HIGH
SPEED
SETTtNG
CAN
BE
DANGEROUS.,
IFYOU THINKTHE
ENGINE-GOVERNED
HIGH
SPEED
NEEDS
ADJUSTING,
CONTACT
YOUR
NEAREST
AUTHORIZED
SERVICE
CENTER/
DEPARTMENT,
WHICH HAS PROPER EQUIPMENT
AND
EXPERIENCE
TO
MAKE
ANY
NECESSARY
ADJUSTMENTS_
THROTTLE
IDLE SPEED
LEVER
SCREW
IDLE MIXTURE
VALVE
FIG. 32
o6

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