Yamaha 2003 yz85, Owner'S Service Manual

Page: 458 / 506

6 - 4
– +
ELEC
IGNITION SYSTEM
EC626002
IGNITION COIL INSPECTION
1. Inspect:
●
Primary coil resistance
Out of specification
→
Replace.
2. Inspect:
●
Secondary coil resistance
Out of specification
→
Replace.
NOTE:
●
Remove the spark plug cap by turning it
counterclockwise and inspect.
●
Install the spark plug cap by turning it clock-
wise until it is tight.
SPARK PLUG CAP INSPECTION
1. Inspect:
●
Spark plug cap
Loose connection
→
Tighten.
Deteriorated/Damaged
→
Replace.
●
Spark plug cap resistance
Out of specification
→
Replace.
Tester (+) lead
→
Orange lead
1
Tester (–) lead
→
Black lead
2
Primary coil
resistance
Tester selector
position
0.18 ~ 0.28
Ω
at
20 °C (68 °F)
Ω ×
1
Tester (+) lead
→
Spark plug lead
1
Tester (–) lead
→
Orange lead
2
Secondary coil
resistance
Tester selector
position
6.3 ~ 9.5 k
Ω
at
20 °C (68 °F)
k
Ω ×
1
Tester (+) lead
→
Spark plug lead terminal
1
Tester (–) lead
→
Spark plug terminal
2
Spark plug cap
resistance
Tester selector
position
4 ~ 6 k
Ω
at
20 °C (68 °F)
k
Ω ×
1
5PA60060
5PA60070
5PA60070
5PA60070
2
1