Ignition System Description (Dr350S); Ignition System Inspection (Dr350S); Magneto Coil Inspection (Dr350S) - Suzuki DR350 Service Manual

8·25 DR350S
IGNITION SYSTEM
Engine stop switch
1
L - .
COl
Ignition coil
C
Neutral indicator sw
Magneto
Pick-up coil
Tachometer
DESCRIPTION
The DR350S engine is equipped with a new type ignition system . Thi s new sys tem further reduces
timing fluctuations . It has an " ignition timing control circuit" which accurately cont rols ignition tim -
ing depending on the e ngine r/min .
OPERATION
When the magneto rotor rot ates, an electric current is generated in the power sou rce coils . and this
current cha rges the capacitor
" c"
via diode " 0 ," . On the other hand . when the protrusion on the
rotor passes the pick-up coil, the cu rrents are generated, they flow to the ignition timi ng control cir-
cuit , and they are converted into one ignition signal. Thi s signal is sent t o "SC A". the "SC A" be·
comes ON, the c
ircuit
"C" - "Se A" -
" Ig l" is formed , and as the electric ene rgy st ored in the
capacitor "C" is discharged instantly, a high voltage is induced in the ignition secondary coil " lg2" ,
and a spark .
This motorcycle is equipped with interlock switches for ignition ci rcuit . The engine can only be started
if :
The transmission is in neutral or
The transmission is in gear, the side stand is fully up.
INSPECTION
MAGNETO COIL
• Remove the seat.
• M easure the resistance between the lead wires in the fol -
lowing table wi th a pocket tester.
09900-25002 : Pocket tester