Yamaha MZ400 Supplementary Service Manual page 16

ELECTRICAL
Model name:
Model code number:
Ignition system:
Ignition timing at 3600 r/min
Primary coil resistance
Secondary coil resistance
Spark plug cap resistance
TCI unit air gap
Minimum spark gap
Electric starting system:
Depth of insulator
Insulation resistance
Brush spring pressure
Brush wear limit length
MAINTENANCE SPECIFICATIONS
(Ω ± 20 %)
(kΩ ± 20 %)
kΩ
mm (in)
mm (in)
mm (in)
MΩ
N (kgf, lbf)
mm (in)
2-7
SPEC
MZ400
7HSB
BTDC 23° ± 3°
0.6
11.2
3.75–6.25 (at 20 °C (68 °F))
0.4–0.6 (0.0157–0.0236)
6.0 (0.24)
0.4–0.8 (0.0157–0.0315)
More than 10
13.1
6.0 (0.24)
MX400
7HSJ