Electrical Wiring Circuits; Distributor Timing - Wisconsin VH4D Repair Manual

No. 1 TERMINAL INDICATED ON
MAGNETO END CAP AS SHOWN.
OTHER TERMINALS FOLLOW FIR-
ING ORDER IN CLOCKWISE ROTA-
TION.
NO 9--
NO 4
~
N
O
3
VERTICAL CENTERLINE
MARK
ON SHROUD FOR
TIMING MAGNETO.
'X' MARKED VANE ON
FLYWHEEL
0
CRANKSHAFT GEAR
RUNNING SPARK ADVANCE
FOR CHECKING WITH NEON
LIGHT. -
~MARKED GEAR TOOTH,
VISIBLE
~THUS THROUGH OPENING, WI EN
FLYWHEEL IS LOCATED AS
~ DICATED ABOVE.
MAGNETO GEAR
EDGE OF VANE IN LINE WITH
MARK ON SHROUD WHEN TIM-
ING MAGNETO.
1 CRANKPtN
~N~_ 3 CR~,NKPIM
FLYWHEEL KEYWAY
ON TOP
2 CRANKPtN
Fig. 11, MAGNETO TIMING DIAGRAM
The dislributor is mounted to an adapter attached to the gear
cover, or Top Mounted - attached to the governor housing.
removing screen. To make a stationary check of the
timing-remove the screen over the flywheel air intake
opening by taking out the screws holding the screen in
The spark advance for normal speeds is 23 ° , the same
as for magneto ignition. Engine must be running at
2000 R.P.M. or over when adjusting spark advance.
ELECTRICAL WIRING CIRCUITS
NOTE: Beginning with engine serial No. 3987113, the
standard wiring circuits for all 12 voltelectrical equipment is
negative ground polarity, in place of the previously
furnished positive ground. All 6 volt systems remain
positive ground.
The Flywheel Alternator circuit illustrated in Fig. 12
always was and is a negative ground system. It replaces
the previously furnished gear driven generator which
was available both negative and positive ground.
Wiring diagram and service parts information for obso-
lete gear driven type generator can be obtained by
writing Wisconsin Motors, LLC, Memphis, TN 38133.
DISTRIBUTOR TIMING
A slotted opening has been added to the rim of the
flywheel screen to check running sl~rk advan¢~ without
RECTIFIER
d~
~ REGULATOR
MODULE
~
=~_z/ ~ULE
12 VOLT ~--~
~ ~
AUTO.TIC
I ~
~,C~nne~i~,, h ' --
~u~ ~ _ ¯ ~~
~ConnB~ions or LJg Is'~
~. I
al charge side o1 ammeter
~
' ~
(negative terminal).
~ Conne~ E~uipment
~Jenoids Rer~
SPARK PLUGS,
DISTRIBUTOR
DRIVE
Ht-TEMP SWITCH ~
(optional)
A
r .... "~.~" .......
START
,, SWITCH
,, (optionol)
SOLENOID
SWITCH
(optional)
STARTING MOTOR
Fig. 12, WIRING DIAGRAM,
25amp Flywheel Alternator and Battery Ignition
13