Electrical; Ignition System - Honda CB200 Shop Manual

62
V. ELECTRICAL
2. IGNITION SYSTEM
Fig.
S- 2
(2)
I
(8)
( 1) Battery (2) Fuse (3) Main switch (4) Ignition switch
(7) Contact breaker (8) Spark plug
(4)
_....__
(8)
7-
(3) (2)
(5)
Ignition coil
(6)
Condenser
The ignition system consists of an ignWon coil. condenser, contact breaker, spark plu~ and some electrica) wirings to connect
them electrically.
The ignition coil
has
1wo windings.
a
primary winding and a secondary winding. Current from the bancry flows through the
primary winding when the con1ac1 breaker points close. The contact b reaker is operated by one of cams integrated wilh the
camshaft
In operation> as the contact breaker points close. the current flows in the primac}' windjng, building up a rnagnelic field. As
the points open , the current stops 11owing. This collapses the magnetic field; i.e., high voltage is induced in the secondary
winding,
As
a
result. the high voltage surges Oow to the spark plugs in the engine cylinders. These surges in
curn
produce
the
electric
spark at the
spark plug gap to
ignite the air-fuel mixture compressed in the engine cylinder.
TI1e operation of the spark advancer
is
dependent upon a centrifugal governor. The unit alters the breaker
cam
angle in
relation to the camshaft to advance or re1ard the ignition timing automatically according to the engine speed
Ignition coil
Spark plug
Contact breaker
Condcnl)Cf
Spark advancer
oint spark gap opening 6mm (0. 24 in.) ,nin.
3-p
Type
Plug gap
Point gap
Spring force
Capacity
Insulation resistance
Start uf advance (crankshat ·1
rpm)
Ill) Full advance (crankshaft rp
NGK D-8ES·L
0.6 0. 7mm {0.024 0.028-in)
0.3 - 0.4,nm (0.0 I 2- 0.016-iIL)
700 900 gr.
0.3 I' F -:i:I 0%
-
!OM 12 min. (With 1.000 megger)
1,800 rpm
3,600 rpm