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• o
D. CARBURETORADJUSTMENTS
i Po0reng]nepedorm_ncec_nbe aresultofother
r. C_uSeSSU_hasdirty _r Igtet;c_bon bultd-up o_
muffler outlets,etc,.See"Troubie ShooUngChart"
be|orepioceeding w_thCarburetoradjustments,
tt Thecarburetorhasrbeerladjustedattl_factory
' f_ s_ |eve_eonditlOt_s.Ad_s_en_ m_ be¢o_
necessa_/if theunitts_sed atsignilicangyhigher
aIlttudescti|y_,l_anyoltha IoIlmi_ngcond_iions:
2. IDLE SPEED ADJUSTMENT
a,Alloweng'me_.oidle.
b./_, justidleSpeedScrewuntlfengineconlinues:o
ru_Wilt)OUtslatlingandwithoutthechainmovinq
, .--Tut_ screw c_ockwise ,,,,'.k to in¢_ea>e
enginespeedffenginesta/_sOrdies,
--Turnscrewco_nferctoc_ise _ los_,,w
.enginedown andfof to keep the ¢_aintrP/_
turning.
c. NOfurther adjustmentsare necessaryif the
chaindoesnotmoveatldiespeedend if porter.
mBnce _ssatistactop/.
I _t,WARNING
Recheckl'_tespeed aftere_chadius_mentbe_(>w.The
chainmustnot moveatidlespeed t_avoidseflousperu
s_lln ups,
3. LOW SPEED MIXTURE ADJUSTMENT
a. Ailowengine{oidle.
de.tied I_"1. Prap_mtk)n"L_low,L_fo_em_klng
any_djuslmei_Is., .. ;_
-- Chain mOVeswhen the engine runs at Idle
speed,See"2 !dteSpeed Adjustment?
--Saw wi I nut d e,.See !'2, I_e SpeedAdjust-
menl" and "3, Low'Speed Mixture Adjust.
menU' " "_
• -- I_ssofcuttlng pewer'whIchIsnotConettedby "
alrifllercIeaning."$ee"5.Htgh SpeedMixture
Adjustment.".; : :. : :
--Engtnediesorhesitateswhentlshe[lidaccel-
emte.See "4.A_celemtion Adjus!ment."
2-cycte engine tf Incorrect carburetoradjust°
mentse_'ema'_e_ '. .
e II theunlt will notdperate properlyalter making
these adustments "takethe u_R te y_ur Sears
Servce Center. J
,_i-i_ &w^_=_ ' _
TheohstnWillbemoving"d_itn9m0stofthispmcedure.
Wear your protective gear'_d observe _IIsafety
pmcaut!ons, _'
i,PREPARATION "'
a, _p engine. ..
b. Use a Itesh toni rt)ixlurewilh prope_gas4inef
oil ratio..4
c, placelhasawonaIKiIidoflal_uffa_a_dmakesure ::
th__ain wg__oto_nl_-'tanyobject,
d, Locatetl_ three(3) Carburetoradjusting screw
openingstothedght0fiheairflits{oDvar.Figure4t.
e. Sartiheeng'_n_andatlowongineloidle3rninutes
to warm up.The enginemust be at operating
temperatureforprepel adju_tfii_ntstobe mode.
I............. I
l //' ' _'__--_II SPEE_SCREWI
_ LO
HIGHSPF,ED SdREW/ / '_ SCREW,
I ...... :...... =rll " : : '
Figure41
r - :"
b TurnIhe Low Speed MixtUre Screw sIowl¥
¢.lockwise ,,-,,k unliI the RPMsia_le,to droP
Nolelheposition.
C._intheLow SpeedMI_ureS¢mw ¢o_,nle_clock.
wlse _ i;nIittheRPMspeedsup_ndsla_s
tod_p_g_in_Notetheposition.
d. SettheLow Speed MixtureScrew al Ihem,d-
/' pointl>_poenthe_0 posi_Ims.
4. ACCELERATION ADJUSTMENT
l:JengJned[_or_sIls_esinsleadofacceleratingolum
theLowSpeedMixture_cmw 1,t16ofalum _.tatime
coLinterclockwtse_ ui_tilyou have smooth
Br._eie_BIion.
5. HiGH SPEED MIXTURE ADJUSTMENT
• ICA.U.TLQ__!:Adjti_iments as small as !116of a
turncartaffect engine p#riormance, ttjs impor.
tenttoturnthescrewonly1116o1st_!rnperadjusF
menlandtesttheperlorm_nce of thesawbe|ore
makingfudher edjustments.
_, MBkeates_cut,
b. Adiu_t,thettigh SpeedMix_.u_eSc{ew1;16ofalum
es I01IowS:
--CIoc'_wise_ i_s_ws_es c__)sespe_e_
--Counterclockwise_ ilthesawhssspeed
oulollhe:utbutlackspOwerin1heCul
c. RepealteslcuI. .
d. Continue1/16ota turn'adjgstmenlsunbllheS_w
runssmoothlyincut.
(_[TU_ Atoolean highspeedset!log(clock-
wise _ adjustment)wigcauseeKglnedam-
ageto any 2,cyctcenginefrom overheating and
tackof lubrication, Neverset thehigh speedmix-
tumscre_sofarctockwlse _ tha_youh_vo
high engine speed but Iscl(powe_whileculting.
An efl_tive appmachfoi|ows:
--Turn Screw caunlerclockwlse &until
engineloses powerwhileCulling,
--Then,turn screw oteckwt_,'__'_ in 1t16_f a
turn tneremenls only until |he engine has
Powerwhtlecutting.
NOTE:It theunitwili not operatepi_pedy elter
m_ingthese adjus_ments,t_kethe0n)_{oyourSears
• servicecenter,
19
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