Advertisement
SERVICE BULLETIN
DATE:
August 25, 1983
BULLETIN NUMBER: 127
MODEL:
3.0, 4.4, 7.7, 11.0
&
l2.5KW Generators
SUBJECT:
Fuel Shut-Off solenoid #23041 - Adjustment
Should it be necessary to disturb the mounting of a
fuel shut-off
solenoid for unit maintenance or repair, or to replace a failed sole-
noid,
the
following
procedure must
be observed when replacing
the
solenoid on the generator:
with the solenoid de-energized and attached to its mounting bracket,
(4.,4 - Mounting Clamp), the solenoid plunger should be manually bot-
tomed in the solenoid and the throttle arm manually moved to the run
position so as
to be within
.010 -
.020
inches of contacting
the
throttle stop screw.
The linkage connecting the
throttle arm and
solenoid plunger
should
then be connected and adjusted to maintain
these positions when the solenoid is electr ically energ ized with the
preheat switch on the instrument panel.
(NOTE:
On 4.4KW generators the solenoid's position
may have to be changed by moving it fore or aft
under the mounting clamp that holds it against the
air intake silencer to properly install and adjust
the connecting linkage to the throttle arm.)
(Figure
A)
MANUAL
CHECK
Check the operation and bottoming of the fuel
solenoid,
plunger
manually
by
doing
the
following:
Ter,.,...ina! (-)
'Te,.,.""al
~
Llli.)
_Aux.
1:+)
SYNCHRO
Terr"lin~1
STARr '
\
\
r;::)-~~
I
'
I N'T'f:RN"L
I
I
/'C.C.5wITcN
I
I
I
I
Ohm
Meter'
1. Connect an ohmmeter across the
+
terminal
and vacant auxiliary terminal on the back
of the fuel solenoid.
(Figure A.)
2. Wi th
the fuel solenoid in the stop posi-
tion,
0-1 ohms resistance should be found
across these two terminals.
3. Manually moving the throttle arm into the
run position and bottoming the fuel sole-
noid plunger, a resistance of about 15 to
30 ohms should them register on the meter
indicating
that
the
plunger
has
bottomed
against
the
internal swi tch de-energ izing
the pull in windings.
Failure
to
insure
manually
that
the
fuel
solenoid
operates
as
described
above
will
result
in
the
failure
of
the
solenoid
when
operated electrically.
(The fuel solenoid may fail within 30 seconds
if
the
plunger
does
not
bot tom
when
electr ically
energ i zed. )
PIN:
J.
H. WESTERBEKE CORP.
AVON INDUSTRIAL PARK., AVON, MASS. 02322· (5171 S88-7700
CABLE: WESTCORP, AVON· TELEX.: 82-4444
Advertisement
