DAELIM BESBI SC125 - Service Manual - Ignition Coil Inspection

16-5

IGNITION SYSTEM

IGNITION COIL INSPECTION

Remove the luggage box. 

Remove the primary wire.

NOTE

Measure the peak voltage of the ignition coil primary

side first.

Since  the  resistance  value  of  the  primary  coil  is

inherently  very  small,  it  is  difficult  to  distinguish  it

from a shorted wire.

PRIMARY COIL INSPECTION

Measure  the  resistance  between  the  two  terminals  of

the ignition primary coil.

If the resistance value is within the specified range the

coil is good.

If resistance is 

(infinite), replace the coil with a new

one.

STANDARD VALUE : 0.1~0.5

SECONDARY COIL INSPECTION

With  the  spark  plug  cap  on,  measure  the  resistance

between  the  primary  coil  terminal  and  the  spark  plug

cap.

If  the  resistance  value  is  within  the  specified  range,

then the coil is good.

If the resistance is 

(open wire), disconnect the spark

plug cap and measure the secondary coil resistance.

STANDARD VALUE : 6.5~9.8 

Measure  resistance  between  the  primary  coil  terminal

and high-tension cord.

If  the  resistance  value  is  within  the  specified  range,

then the coil is good.

If the resistance is 

(open wire), replace the coil with

a new one.

STANDARD VALUE : 2.7~3.5 

REPLACEMENT

Remove  the  high-tension  cord  from  the  plug,  remove

the plug cap.

Remove the wire from the ignition coil.

Remove the primary wire from the ignition coil.

Loosen the ignition coil fixing bolt securing the frame,

Remove the ignition coil.

Install in the reverse order of removal.