Normal deflection A (pic. 66) the belt should be within 10-15 mm with a force of 100 N. To adjust the belt tension 4, loosen the nuts securing the generator to the tension bar 1 and bracket 3. Move the generator 2 away from the engine (to increase tension) or to the engine (to reduce tension) and tighten the nuts. Turn the crankshaft two turns clockwise and check the belt tension.
The belt must not be over-tensioned so as not to cause an increase in loads on the generator bearings.