Generac Power Systems TXP - Manual (Page 39)

B.) Loosen Governor Lever Nut,
Push Governor Lever all the way
counterclockwise to open thrott­
le wide open. Hold the Governor
Lever in this position, then ro­
tate the Governor shaft all the
way counterclockwise, as far as
it will go. Tighten the Governor
Lever Nut to 100 inch-pounds.
;
RESULTS: 1.) Engine runs normal, provides
62 Hz at "No-Load"..............................................................Test Completed
2.) Engine "hunts" and/or AC Voltage
or Frequency is incorrect......................................................Go to Paragraph "C"
C.) With engine running, turn
Governor Adjusting Nut to ob­
tain 62 Hz at "No-Load".
Governor tab should be bent to
apply slight tension to governed
idle spring at 1860 rpm (62 Hz
or 124 volts), with no electrical
loads applied. Spring should be
loose when loads are applied.
Governed
IdleTang
Idle Speed
Adjustment Screw
Carburetor Body
Throttle Lever/
Governor
Shaft
Governor
Lever Nut Governor
Lever
Governor Adjustincj Nut
NOTE
The Governed Idle spring, prevents engine speed surging and "hunting"
during "No-Load" conditions. When an electrical load is applied, the
spring will normally become loose and ineffective.
TEST
33 FREQUENCY
A.) Use an accurate Frequency Meter to check alternator output frequen­
cy. The Model 5515 Load Bank is equipped with a frequency meter, as well
as provisions for reading voltage and amperage. Frequency should be 63
Hz (63 cps) at "no-load". With an electrical, load applied, frequency
should be 59-63 Hz and stable. (All mechanical governors have a normal
'o ffspeed" fluctuation, which is the reaction time of the governor.)
RESULTS: 1.) Frequency checks Bad...................................... Continue tests in "Diagnostic
Flow Charts", Section 3
2.) Fi'equency Checks Good...............................Continue tests in "Diagnostic
Flow Charts", Section 3
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