This starting buzzer is low voltage starting buzzer which can be connected to most magnetos to improve starting. This starting buzzer was designed for use on LOM M462 engines with M-9-35 magnetos. These magnetos are used on most new M14P engines, M462 is AI14 core with different gearbox than M14P. M14Pis basicaly AI14 core as well.
Some new Yak's com from the factory without starting buzzer and you can find it really difficult to start.

This starting buzzer can even be used on Lycoming or Continental engines to improve starting (CAN NOT be used on electronic ignition or FADEC).

NOTE.: With this buzzer you start the engine with magneto switch in both!!! Contrary to old M14P magnetos M-9-F which use booster coil and start with magnetos off!!!

NOMINAL VOLTAGE	28V
NOMINAL CURRENT	1.0A +0.2A
TEMPERATURE RANGE	-50 to +60 C
WEIGHT	0.17Kg

See drawings and wiring diagram below for more details.