Craftsman 917.271110 Lawn Mower User Manual


 
TOREPLACEFUSE
Replacewith30ampautomotive-type
plug-infuse.Thefuseholderislocated
behindthedash.
ENGINE
TO ADJUST THROI"FLE 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 from slow to choke posi-
tion. Slowly move lever from choke to
fast position.
Check to see if hole in throttle lever and
hole in speed control bracket are
aligned.
If holes are not aligned, loosen cable
clamp screw and align the holes by
inserting a pencil or a 1/4" ddll bit
through both holes.
Pull throttle cable up to remove slack
and tighten cable clamp screw. Remove
alignment pencil or drill bit.
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 adjusting needles in
(clockwise) decreases the supply of fuel to
the engine giving a leaner fueVair mixture.
Turning the adjusting needles out
(counterclockwise) increases the supply of
fuel to the engine giving a richer fueVair
mixture. -,
IMPORTANT: Damage tothe needlesand
the seatsincarburetormay resultifnee-
dleisturnedintootight.
NOTE: The carburetoron thisengineis
low emission.Itisequippedwithan idle
fueladjustingneedlewitha limitercap,
which allowssome adjustmentwithinthe
limitsallowedby thecap.Do notattempt
to remove the limitercap.The limitercap
cannotbe removed withoutbreakingthe
adjustingneedle.
Be sure you have a clean air filter and
the tl=vr_ttecontrol cable is adjusted
properly (see above).
Start engine and allow to warm for five
minutes. Make adjustments with engine
running and shift/motion control lever in
neutral (N) position.
Idle speed setting - With throttle control
lever in slow position, engine should
idle at 1750 RPM. If engine idles too
slow or fast, turn idle speed adjusting
screw in or out until correct idle is at-
tained.
Idle fuel needle setting - With throttle
control lever in slow position, turn idle
fuel adjustment needle in (clockwise)
until engine begins to die and then turn
out (counterclockwise) until engine runs
rough. Tum needle to a point midway
between those two positions.
Recheck idle speed. Readjust if neces-
sary.
ACCELERATION TEST -
Move throttle control lever from slow to
fast position. If engine hesitates or dies,
turn idle fuel adjusting needle out
(counterclockwise) 1/8 rum. 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 set-
ting can be dangerous. If you think the
engine-governed high speed needs
adjusting, contact your nearest AUTHO-
RIZED service center/department, which
has proper equipment and experience to
make any necessary adjustments.
CableClamp
Screw
SpeedControlBracket
Idle Speed
Adjusting
Screw
ThrottleLever
Idle Fuel
AdjuslJng
Needle
26