Yamaha MX775 - Electrical

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SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ELECTRICAL
Ignition coil:
Primary coil resistance 0.44–0.66 
Secondary coil resistance 5.6–8.4 k
Spark plug cap resistance 3.75–6.25 k
Crankshaft position sensor air
gap
0.5–1.5 mm (0.02–0.06 in)
Minimum ignition spark gap 6.0 mm (0.236 in)
Charging system:
Standard output at 3600 r/min 18 A: More than 18 A
20 A: More than 20 A
25 A: More than 25 A
Stator coil resistance 18 A: 0.16–0.24  at 23 C (73.4 F)
20 A: 0.112–0.168  at 23 C (73.4 F)
25 A: 0.096–0.144  at 23 C (73.4 F)
Rectifier/regulator:
Regulator type Single-phase full-wave rectification
Regulated voltage 14–15 V
Rectifier capacity 25 A
Fuel injection sensor:
Crankshaft position sensor resis-
tance
3.0–7.0 k
Manifold absolute pressure sen-
sor air pressure
14–15 psi
Engine temperature sensor
resistance
9.0–11.0 k at 25 C (77 F)
Electric starting system:
Depth of insulator 2.0 mm (0.79 in)
Insulation resistance More than 1.0 M
Brush spring pressure 11.73–15.35 N (1.196–1.565 kgf, 2.637–3.451 lbf)
Brush wear limit length 6.0 mm (0.2362 in)
Holding coil resistance 0.88–1.32 
Pull-in coil resistance 0.4–0.6 