Sears 917.25759 - Manual (Page 23)

SEiWii;*', Atm AD-IUh i MEriTf
ENGINE
ro ADJUST THROi il E COWIROL CABLE
(See Fig. 31}
1 hr- ti-rt illr ((/titrtil I n 1 1 p ’ r H '-1 thi-‘ i,,CK/ry , >'ifJ
idj'i'ftnU'tlf 'll lOijSfl r.l t I <' lK(,f),U/ ( ' , I S ‘ ' i A >l;li ('I . >
iesuii'i'i■! bt‘l')Vj i(, ' .»'"in'] i it'll Sf .nijij .tniMiit i'
tliJCi' ,'.fjry. !?fOCi i"j IS •u!|r..v "
» V^lfn fHirjirii' tiOf nilSlir I Iff";*]' f , t(f'| i, vf»r
ff'im siow / ' ^ 1 }'. < Inkf i|- t fii'Ssii II' f u ' i / r
from (tiokr i'*i| I', fij f |,,i
* k^ha! fi.'I I' I . ' ' I ' j o f ' I - r ' l i ' 1 1 < i
m d'o/» ttiiir olotij kn 110 kh'iif'/A !■ 4 ,llT sfi.
liHisotuiatnij fTf".vor lin ovofistoiiff i jf,ii oi'k (ol- .
lOn oli'i''« d 11 ]hi't! G,-rrf snfiv » c o t r ' ;
GOVt-flNOM
CONIROi Lf-V!-f?
x._
" • ' V \
.^.OVFRfifJH
<'{'(!! HOI HLAlc
C'Ad'Lb
FIG. 31
TO ADJUST CARBURETOR (See Fig. 32)
The carburetor has l)con preset at l.hc fociory and adjuid
men! should not f)o netiemmsy. However, mincir arJioot
ment may be requirfrd !o cempcrv.t.alo fordiffoioncms in fuel,
temperature, altitude or Iniiri. If the nriiliiirot'sr »'toes nr-arj
adjustment, pjiocoed as folkovs;
In general, turning Idle mixtiin',- valve in (oinckwiso) »ie
creases the supply of ftiol to th«» en'jine giving ,s ip.sner fupi/
air mixture. Turning the irJlp mixture valve out icounter-
clockwise) increases tho supDiy of tijol lo the pfiyiin»;' qivin'i
a richer fuel/air mixtuio,
” ' '
IMPORTAWT: DAMAGOTO THE NEEDLF '/At VF’ ANG
THE AFAT IfJ CAHBUntTUH HAY HESUL! IF SCHt'W IP
TURNED IN TOO TIGHT
PREUMINARY SETTING -
• Air cleaner assembly rm sst be assembhYi to the eorbii-
retor when making carburetor adjuslmontPj.
• Be sure the throttle control c-able i'S adjusted proporly
(see above).
'
• With engine off tiirn idle mixture valve in (clockwise)
clositifl it finger tight and then turn out (counferciock-
wise) 1 full turn.
'
FINAL SETTING
• Start engine and allow to warm, for five minutes. Make
final adjustments with engine riinniiig and shiff/motion
control lever in neutral
(H) position.
• Move ihrotiie control lever to slo / - 1 position. With
finger, rotate and hold throttle lever against idle speed
screw. Turn Idle speed screw to attain 1750 RPM.
• While sti holding throttle lever against Idle speed
screw, turn idle mixture valve in (clockwise) until en­
gine begins to cite and then turn pyt (counterclockwise)
until engine rurrs rough. Turn valve to a po-irit midway
b-etweert those two positions. Release ttrottle lever.
ACCELERATION TEST -
• Move throttifi control lever from slo'w {•mi t..'> fast {■%'}
position. If engine hesitates or dies, turn'idle mixture
valve out (couriterclockwise) 1/8 turn. Repeat test and
continue to adjust, if necessary, until engine acceler­
ates srnoothly.
High speed stop is factory adjusted.. Do not adjust -
damage may result.
I'MPOBTANT: NEVER TAMPE.R WITH THE ENGINE
GOVER..NOR, WHICH IS FACTORY SET FOR PROPER
toii.iNE to i G , ' P . l . ' i l f P , H‘ criOJlVE ABOVE
HL ! O I'd , u j ' i r ITINS CAN I l
DANGEROUS... IF YOU THINK THE ENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING. CONTACT YOUR
NEAREST f t '.C r " U ' PA U .
DEPAflTIVlENT, WHICH HAS PROPER EQUiPMENT AND
EXP'ERTENCE TO M A K E A N Y N E C E S S A R Y
ADJUSTMENTS,
23