Poulan 160886 - Manual (Page 23)

SERVICE AND ADJUSTMENTS
ENGINE
TO ADJUST THROrriE COKTROL CABLE
iSec Fig_ 111
The Ihrotile control has been preset at fne factor/ and
ohiuetmeni sho* *W not be necessary Check adjustment
aescnbed beio»*’ before loosening cafcis
!f adjustment ¡&
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 move throttle caole until holes
are aligned. Tighten clamp screw securely.
TO ADJUST CARBURETOR (See Fig. 32j
The carburetor has been preset at the factory and adjust­
ment should not be necessary. However, minor adjust­
ment 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) de­
creases the supply of fuel to the engine giving a leaner fuel/
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 properly
(see above).
• With engine off turn idle mixture valve in (clockwise)
closing it finger tight and then turn out (counterclock­
wise) 1 full turn.
e minutes. Make
j and shift/motion
n'lThlip ><•'
iW,
FINAL SETTING -
• Start engine and allow to warm for fi'
final adjustments with engine runnin
i . rt ' if- JiJ <r >•>,' I I'l |l'|( r,| r
• fr .f.tiiea ifi ii (f slow,.*
jtbir.ti.f !< .0 jqaifiTi <lecrCi-0
1 <rr It --PPP'J -r-J* V -tic h RHM.
• Wtiite siili hold.ng tht..'tiie tejsi agcoost ¡die sf'o<J
.crtv ion. Tfe m.i. ft VaiiC in folr.^^r < Soe)
. 1
til fet -
gineb^g><i=io J ea.idtn'i‘r,TMrnouti''uMnieir|i4 kwmr }
until r-nqiri':^ iLiiB r.. i/h Tun. 'iive to a point midwvv
pcfv oen trios'^ Lvo f.nsf.-.n-
fhrow^*
ACCELERATION TEST -
• Move throttle control lever from slow to fast position if
engine hesitates or dies, turn idle mixlure valve out
(couRterdockwi.se! 1/8 turn Reoeat 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 SETTING CAN BE
DANGEROUS. IF YOU 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.
FIG. 32
23