TECHNICAL TIPS
GEN
INFO
1-18
E
IGNITION SYSTEM
The 25B and 30H use the mechanical ignition timing advance system, in which the base of the
charge coil and the pulser coil slides in accordance with the throttle valve opening.
Mechanical ignition timing advance applied in this system makes it easier to adjust and
confirm the appropriate ignition timing.
In addition, the ignition timing advance is restricted when the shift is in neutral, which helps
to prevent the kickback at the engine start.
Fig. 15
Fig. 14
Summary of Contents for 25BMH
Page 48: ...FEATURES AND BENEFITS GEN INFO 1 12 E COOLING SYSTEM Fig 7 ...
Page 49: ...1 12 CARACTERISTIQUES ET AVANTAGES GEN INFO F ...
Page 50: ...1 12 MERKMALE UND VORTEILE GEN INFO D ...
Page 51: ...1 12 CARACTERÍSTICAS Y VENTAJAS GEN INFO ES ...
Page 92: ...MAINTENANCE SPECIFICATIONS SPEC 2 8 E DIMENSIONS ...
Page 156: ...GENERAL CHK ADJ 3 26 E NOTE Grease the inner cable and the lock nut 2 Apply Yamaha grease D ...
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Page 446: ...Printed on recycled paper Printed in Japan Oct 2000 1 9 1 25BMH 30HMH YAMAHA MOTOR CO LTD ...