Suzuki GSXR-1100 1990 - Fuel Cock Removal; Fundamental of Fuel Cock

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FUNDAMENTAL OF FUEL COCK
11 e xpl ai ns of the co ns tru ct i on of di tip tu agro type hml co c k.
ON : Normally u sotl , Func tion s as an auto hiel cor.k
RES: Aes 8rvO fuel is u sed , Ft 1ncti (l 1\s as an auto hiol cock
PRI : Fuel is dir UCt ly ~upp l ie d. Ooa s not fuoction as an a uto
fuel cock
ENGINE STOP CONDITION
\II/h en 1he e1 1g111 (! is r1ot runn i ng with ttrn h.1vc1 Ir. Lhe ON o r RES
posit io1,, the h,el ,.•alv e :.1: is k0Pl io the cl osed p osi tion by
app lyi flU pr assuro o od otih 1 in g th P. tensi on or Sl)M'l!J \2, so t hat
no hJ~d w'ill flow to th e carlJu rc t o, s
EN G INE RUNNING CONDITION
Wh en th e t ugine is stcuted, a negat ivl! pu )SS\ 1r e •6 is genera ted
in the di aphragm cham bt:I' , ;;_t_, lhr o 11gh thP. vac uum (009ati ve
press un :: • pip e ~ ~ ~ whi ch is co n nected to the ca r bure tor. and
bu ilds up a n egative p,oss~ ,, e •6 w hi ch is l11 9h 1.i r lhan the
tens
10 11 <if s p, lnn ~ ·; so th at th e dia phr J9 1~1 (~';, is fo,c ed to open
1he fue l va lv e ( r• an ti lhu s a ll ow th e f uel to flow to th e
carbu1
t1 l01S •~ ,
"PRI" ' POSITI ON
When th e fuP.I valve ~] IS $C l at the PRI position, fuel UOINS to
th e ca,1.l ur o tC> fS d i,ect ly b ecau se th at the p• <il1'11 sion l nc;ued on
th e le vM e nd p ushas back. th e fuel valv e t 1 • mecha ni ca lly
againsl the s,:,ring tens ion , wheth er th e en gi ne is running 01
not, th m u gh the RES s, de r ue l filt er and fuel valve cl e a,a nc:P..
l h <: PRI p os iti on is u se d wh en the ca d >~ • ,etor h ave littl e 01 no
fuel. for e xampl e, when fillir1~ t he fu el tan k fo r t li e f ir st ti me,
C>r w hen the motor c ycl e has I.limn l eft u nos ~d for a lo nu lim e,
or when the CJrbur"Ol ors have h l:! P.n dis assemb l ed and repa ir l:!d.
Shih tho le ver to th e ON positior1 w t ,<: n the en gin e be9i 11 s to
run s moothlv .
FUEL ANO LUBRICATION SYS TE M 4-2