
Generators 1631.3701 or 192.3771 do not have a built-in voltage regulator and work in conjunction with a transistor voltage regulator type 13.3702–01, which has electronic protection against short circuits in the generator excitation winding circuit

The general view and cross-section of the engines are shown in the figures.
The engines are in-line four-cylinder, equipped with carburetors and a contactless ignition system.

The engine is in-line four-cylinder, equipped with an integrated microprocessor fuel injection and ignition control system (KMSUD)