PGO BR-500 Service Manual page 196

Fuel feeding system
The pump absorption may vary
according to:
- power supply voltage
- pump running-in
- regulation pressure
- delivery filter cleaning
To check the absorbed current,
proceed as follows:
-disconnect the pump remote
control switch connector.
- with key switch set to "OFF", connect the jumpers 30-87 on the connector using the tester
prods on amperometer function (see figure).
- check the pump rotation and absorption
Absorbed current = ~ 3.5 ~4.2 A
NOTE: this absorption refers to:
- power supply voltage = ~ 12 V
- pump run-in
- system pressure = 300 KPa (3 bar)
- fuel filter clean
The a dirty filter causes an increase of the absorption. If the overpressure valve opens, the
pump absorbs ~ 6? A.
In case of excessive absorption(5A), replace the filter. See pump support overhaul.
If the fault continues, replace the pump.
P.9-49
PGO BR-500 ENGINE