Suzuki DF2.5 Service Manual page 38

IGNIT10N AND ELECTRICAL
IGNITION TROUBLESHOOTING
Perform the following ignition system tests when the engine is hard to start in order to determine if the cause
is in the ignition or another.
l
I
I
I
i
START
Check the spark condition. I
Sparks
l
'
No or weak sparks
Check if the spark plug is in good condition.
(See page 2-7.)
OK
Disconnect the emergency/engine stop
switch lead wire (Black).
No or weak sparks
Check the air gap.between the igniter unit
core and the flywheel.
[Air gap: 0.5 mm]
I
Check the igniter unit resistance.
(See page.3-5.)
[Primary: 0.5 -<0.9 Q]
[Secondary: 10 '- 16 kQ]
OK
Check the spark plug cap for any evidence
of the high-tension leak.
OK
Check the spark plug cap resistance.
(See page 3-5.)
[Cap resistance: 4 - 6 kQ]
OK
The cause will not be in the ignition
system.
Check the ignition timing by using
!
Not good
the timing light. [Approx. BTDC 30.]
i
Not good
Sparks
Out of spec.
Out of spec.
Replace the spark plug w ith a new one.
Check and/or replace the emergency/
page 3-6.)
engine stop switch. (See
Adjust the air gap. (See p age 3-5.)
Not good
Replace the spark plug cap.
Out of spec.
Replace the igniter unit.