Yamaha 25BMH 30HMH Factory Service Manual, Page 88Get this manual
SPEC ELECTRICAL
Item IGNITION SYSTEM Ignition timing (Full retard) (Full advanced) Spark plug gap Ignition spark gap (Minimum)
MAINTENANCE SPECIFICATIONS
Worldwide
Model 25BMH 30HMH
Degree Degree mm (in) mm (in) BTDC 22 2
ATDC BTDC 25 8.0 (0.31) 0.91.0 (0.0350.039)
Spark plug cap resistance (with resister type) Ignition coil resistance (Primary) (Secondary) Charge coil resistance (BrL) Charge coil output peak voltage (BrL) cranking 11 cranking 21 1,500 rmin 3,500 rmin Pulser coil resistance (WR, WBB) Pulser coil output peak voltage (WR, WBB) cranking 11 cranking 21 1,500 rmin 3,500 rmin CDI unit resistance CDI unit output peak voltage (BO, BWB) cranking 11 cranking 2