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Q.
2.73
ENGINE
CARBURETTOR
·
XN1 ENGINE
Olllr
ADJUSTING THE IDLING
WARNING
· The ignition system must be
in
good
condition and perfectly set
·
The engine must be warm {fan engaged
).
The setting ot the secondary carbu rettor Must
not be
altert.>d.
Use a rev-counter
504
urope-ralenti
504
Europe-cycle
504
U.S.
"1971 standards"
Acting on stoµ screw
(Z)
, obtain an engine speed
of
840
r.p.m.
Find the max imum engiml
speed, t>y
acting on
mixture screw
(W).
Bring thP. eng1n" s04 d back to 840 r
.p.
rn. acting
on
·
he stop screw
(Z
)
Repeat
these
operat
ions
until Lile maximum
obtainable engine speed 1s
840
r.o.m.
Screw the screw
(W)
10
until the engine speed
drops to
800
r.p.m.
without upsetting the regu-
larity ot the
idling.
b04US"1972 swnd<11ds"
504
US "1973 standards"
Act
on screw
(Z)
to
obtain
an engirH sr.>tJed of '·
820 r.p.m. tor 1972 models
800 r ,p.m. for l 973 models
Unscrtiw
(W)
unt
i
l
the 1dl!-! runn11111 1s steady
Aci on
scr~
(Z)
1
:> obtain an eng ne
speed
of
870 r.p.m. for 1972 models
-
830
to 880
1.p.m.
for 1973 rnodels
Finish off the adiustment bv
screwing
m
(W)
10
obtain an idling speed of
-
800
r.p.m.
for 1972 models
• 800
LO
850
r.µ.m.
tor 1973 models
WWW.~
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12\2
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