Yamaha TZ250M1 Owner's Service Manual page 249

IGNITION SYSTEM
%
2. Inspect:
• Secondary coil resistance
Out of specification ≥ Replace.
Tester (+) lead ≥
Tester (–) lead ≥
?
Secondary coil
resistance
5.0~7.4 kΩ at
20˚C (68˚F)
NOTE:
When inspecting the secondary coil resis-
tance, remove the spark plug cap.
EC627031
CDI MAGNETO INSPECTION
% 1. Inspect:
• Pick-up coil resistance (left cylinder)
Out of specification ≥ Replace.
Tester (+) lead ≥
≥ White/Black lead 2 2
Tester (-) lead ≥
?
Pick-up coil
resistance
94~140 Ω at
20˚C (68˚F)
%
2. Inspect:
• Pick-up coil resistance (right cylinder)
Out of specification ≥ Replace.
Tester (+) lead ≥
≥ White/Black lead 2 2
Tester (-) lead ≥
?
Pick-up coil
resistance
94~140 Ω at
20˚C (68˚F)
6-5
ELEC
≥ Spark plug lead 1 1
≥ Orange (Gray) lead 2 2
Tester selector
position
kΩ X X 1
≥ White/Blue lead 1 1
Tester selector
position
Ω X X 100
≥ White/Green lead 1 1
Tester selector
position
Ω X X 100