Onan UF Series Instruction Manual And Parts Catalog page 75

S E R V I C E D I A G N O S I S
17
POSSIBLE CAUSE
REMEDY
LOW VOLTAGE OUTPUT OF GENERATOR (Cont.)
Open circuit of shunt field
winding.
Short circuit of windings in
the field or armature.
Make proper connections accordmg
to wiring diagram.
Replace defective part.
Manual field rheostat (if used)
adjusted at minimum voltage.
Adjust manual rheostat.