Automatic Device Characteristics; Two-Tap Ignition Coil Specificatins; Spark Plug - Dnepr MT9 Repair Manual

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--
Characteristics of the Autom
a
tic
Device
CamsiJafl speed
.
r.p.m.
1200
2050
2.;oo
28QO
Ignition
advance an::!lc, deg
1-
3
5- /,,
' i
10-
13
13-16
13- 16
When repairin
g
th
e
breaker with
the
igniti on
advance automa-
tic device,
prop
er
attention
should
be
g iven
to the
cond
iti
o
n
of t
h
e
b rea
ker
contacts.
,.
Burnt
con
t
acts m ust
be trimmed
wit
h
a
fine-grained
s
andpaper
or
w
ith
a
fl
at nee
dl
e
file.
After
trimming,
wash
the
contacts.
When dismantling the
automati
c
device, mark the
mati
n
g
parts
so
that they
can
be
cor
rectl
y re-asse mbled.
Th
e
automatic
dev ice hav
ing loo
se axles
or
b
ro
ke
n
openings in
the
bushings
must
be
replaced.
·A
free-idl
e
travel
of
th
e
weights on the installed
a
utom
atic
d
e-
vice
should
be e
limin
ated
by
unbending
the
leg
fastening the
spr ing.
Specifications for Two-Tap Ignition Coil
Type
.
.
.
.
.
.
Rated vo
l!
age a
t
primar
y
windin
g
terminals, V
.
Gap l.Jelween
dischargers
a
nd hi
g h-tens
ion
terminals.
mm
Maximum
camshaft speed at which
ign
ition
ensu res uninte
rrup
ted
sp.arking·
<~l
s
tandardi zed
lhree·electrode needle discharger
as
per
GOST
8028-56
at
7
111111
spa
rk
gap over
the en
ti
re s peed range,
r.
p.m.
Winding Data
1320
1
6
9
from
100
to
3000
The·
p
rim
a ry
winding
cons
ist
s
of
300±5
turns of
w
ire,
g rade
f13Jl
, dia
.
0.55
mm
, wo
und-
on
in
three laye rs
.
The
seco
nd
a
ry
·
wind-
ing
co ns ists
of
19000
±
200
turn
s
of
wire
f13Jl, dia.
0.09
mm,
wound-
on
in two
sect ions
.
Spark Plug
Type
Spark
gap,
mm
Threa
d of
screwed-in part of
!he plug
Wrench
opening,
mm
Version
2
The ignition system (Fig.
44)
con
s
ists
of:
A8Y
0.6
lo
0.75
e
n
14
x
1.2s
22
di stributor-
a
nd-contact
breaker
unit
with
m
an
ual
ig
niti
on ad
-
vance;
ignition coil;
spark
plugs
;
s
uppressor resi
sto
rs.
8*
113

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