Vedeneyev M-14P, Maintenance Manual

Page: 286 / 381

MAGNETO M-9F - DESCRIPTION AND OPERATION
1. GENERAL
The M-9F magneto (Ref, Fig. 1) is intended, to generate high-tension current and, distribute it among the
spark plugs of piston engines for igniting the working mixture.
The M-9F magneto is of a rotor construction (permanent magnet is rotating, the transformer is stationary).
The M-9F magneto has fixed spark, i.e. it does not include a spark advance mechanism.
The magneto operates jointly with coupling MR-09 serving to set the spark when mounting the magneto
on the engine and to ensure smooth transmission of drive torque to the rotor
The M-9F magneto is designed for starting the engine with the use of starting coil KP-4716.
2. DESCRIPTION
2.1. SPECIFICATIONS
Vibration load frequency at amplitude:
0.8 mm ...................................................... .........................................Up to 50 Hz
3 mm ........................................................ ..........................................At least 1.5 Hs
Ambient temperature (atmospheric air with gasoline vapors) .... ........±60 °C
Rotor speed at which magneto offers troublefree operation ..... .........600 to 3420 r/min
Breaker point gap ............................................. ..................................0.25 to 0.35 mm
Breaker point pressure ........................................ ...............................(650±100) gf
Dwell (angle of rotor turn from neutral position to beginning of breaker point operating) ..................
...........................................................................................................................13 to 16"
Rotor direction of rotation (if viewed from magneto drive side) .........................................................
...........................................................................................................................LH
Mass .......................................................... .........................................Up to 5.4 kg