Operator`s manual
Adjustments (Generator) 
Once the diesel generator set has been placed 
in 
operation, there may be adjustments required for engine 
speed (hertz) during the engine's break-in period (first 
50 hours) or after this period.  A no-load voltage 
adjustment  may also  be  required in  conjunction  with the  engine's  speed  adjustment.  These  are not 
warrantable adjustments as they relate to normal break-in and maintenance. 
II 
CAUTION 
II 
When starting the generator, all AC loads, especially large motors, should be switched off until 
the 
engine has come up to speed and, 
in 
cold climates, starts to warm up.  This precaution will 
prevent damage caused by unanticipated operation 
of 
AC machinery and will prevent  a  cold 
engine from stalling. 
Generator 
Frequency Adjustment (Hertz) 
Frequency is a direct result 
of 
engine/generator speed, as indicated by the following: 
When the generator is run at 
1800 rpm, the 
AC 
voltage output frequency is 60 Hertz. 
When the generator is run at 
1500 rpm, the AC voltage output frequency is 50 Hertz. 
Therefore,  to  change the generator's frequency,  the engine speed must be changed. 
To 
accomplish the 
frequency change, perform the following: 
1. 
Connect the AC output leads to the AC terminal block 
in 
accordance with the AC voltage connections 
diagram  specified  for  your  generator  set,  and  change  the  hertz  connection  to  the capacitor.  These 
connections are illustrated 
in 
the "BC GENERATOR" section 
ofthis 
manual. 
2.  Adjust the engine's speed to obtain the frequency corresponding to the voltage selected by adjusting the 
stop bolts and positioning the throttle 
arm 
against these stop bolts to either increase or decrease engine no-
load speed to adjust hertz produced. 
To 
arrive 
at 
the  appropriate  frequency,  either  monitor  the  speed  of  the  engine/generator  with  a 
tachometer, or monitor the frequency with a frequency meter, the latter method being the more precise 
of 
the two. 
Fuel Shut-off Solenoid - Installation Instructions 
The fuel shut-off solenoid #037100  is mounted in  a  threaded boss 
on 
the  engine's block 
just 
aft 
of 
and 
below  the  engine's fuel injection  pump.  Proceed as follows  when  installing a replacement 
or 
new  fuel 
shut -off solenoid. 
WESTERBEKE 
GENERATORS 
68 










