Onan MicroLite 4000 Series User Manual

7-10
Transformer (T1) – Begin Spec B, 50 Hz
Only
The transformer (see /Figure 7-8) is located on the
backside of the genset (see Figure 6-2 on Page
6-3). The transformer can be checked with an ohm-
meter. Isolate the transformer leads from the circuit
and measure the resistance between H1 - H2 pri-
mary winding. The primary should measure 440 to
540 ohms. Measure the resistance between X1 - X2
secondary winding. The secondary should mea-
sure 225 to 275 ohms. If an abnormal reading is
measured, replace the transformer.
TRANSFORMER T1
TRANSFORMER T1 SCHEMATIC
FIGURE 7-8. TRANSFORMER (T1)

Onan MicroLite 4000 Series Specifications

General

Fuel Type	Gasoline
Frequency	60 Hz
Rated AC Output	4000 Watts
AC Voltage	120V
Rated AC Amperage	33.3A
Engine Type	OHV
Starting Method	Electric
Noise Level	68 dB at 23 ft