Generac Power Systems MC - Manual (Page 52)

Refer to 2.4.1,3 and 2,4.2, this Section, If engine starts and then
shuts down, the problem may be caused by the Control Relay (CR). Pro­
ceed as follows to check the Control Relay
A. )-With unit battery properly connected, depress Fuel Pump button.
The Fuel Lockoff Solenoid should open and Fuel Pump should operate.
RESULT :-Checks good,........................... Go to Paragraph B
Checks bad......... Check 15 Amp Fuse and priming circuit -
See 2.4.2.1, PRIMING
B. )-Crank engine while holding Fuel Pump button depressed. Continue
to hold button in after engine starts, then release.
RESULT:-Engine starts and runs normally,
shuts down after button is rel-......... Go to Paragraph C
eased
No change - engine starts then,..Continue Diagnostic Tests,
shuts down as before
C. )-Set VOM to "AC", Connect one me­
ter test probe to Pin No. 7 of the
CR receptacle. Connect remaining
test probe to receptacle Pin B, then
crank engine. Meter should indicate
approximately 10-12 Volts AC,
RESULT:- Checks good..... Replace CR
Checks bad.... Check wires 15 and 77-
If wires check good,
replace stator assembly
2.4.3.2- CONTROL RELAY (CR)
Section 2,1
CONTROL RELAY RECEPTACLE
VIEWED FROM WIRE END
2.4.3.3- FIELD BOOST MODULE
A.)-Unplug red receptacle from its
receptacle on stator can. Set VOM
to "-HDC" and to any scale that
will permit 12 Volts to be read.
Connect the positive (+) meter test
probe to red connector plug Pin No,
5, Connect the common (-) probe to
frame ground. Depress the Fuel Pump
button - meter should indicate app­
roximately 9-12 Volts DC.
RESULT:-Checks bad,.....Go to Para­
graph B
Checks good.... Continue
tests. Section
2 . 1
2.4-6