Wisconsin VH4D Repair Manual Download Page 40 | Manualshive

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Summary of Contents for VH4D

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Page 2: ...d short enginelife Wisconsindistributors anddealers because of their close factory relations canrenderthe bestandmostefficient service THE LIFE OF YOURENGINEDEPENDS ONTHE CAREIT RECEIVES The MODEL SPE...

Page 3: ...t to establishthepolished bearing surfaces which aresonecessary to the properperformance andlong life of anengine These canonly beobtainedby runninga new enginecarefully andunderreduced loadsfor a sho...

Page 4: ...y this symbol z WARNING Operations that may result only in enginedamage are identified in the RepairManual by this symbol CAUTION Wisconsin Motors LLCcannotanticipate every possible circumstance that...

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Page 6: ...eds in excess of 2800R P M load Donot operate enginein a closedbuildingunless theexhaust is pipedoutside Thisexhaust contains carbonmonoxide a poisonous odorlessand invisible gas which if breathed cau...

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Page 8: ...ABER AGNETOSTOP SWITCH MAGNETO OIL FILTER TAKE OFF Side Mount Tank VIEW OF ENGINE AIR VENT HOLE FUEL TANK CAP MUFFLER FUEL TANK OIL FILLER AND BREATHER CYLINDER NUMBERS AIR CLEANER CHOKE BUTTON VARIAB...

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Page 10: ...L FILLER AND BREATHER CAP CRANKSHAFT OIL SLINGER OIL PRESSURE RELIEF VALVE SET FOR 15 POUNDS PRESSURE OIL HEADER TUBE OPTIONAL LOCATION OF OIL GAUGE SABER FULL AND LOW MARKS ON OIL GAUGE SABER OIL PUM...

Page 11: ...oad imposed upon the engine These engines are equipped with either a fixed speed governor a variable speedcontrol to regulate the governed speed of the engine or an idle control ROTATION The rotation...

Page 12: ...ith either a gravity feed tank mounted above the carburetor fuel level a side mount tank or tank mounted below the engine In the latter two cases a fuel pump is furnished The fuel tank should be fille...

Page 13: ...gines andin cool weather Racing anengineby disconnecting the governor or by doinganythingto interfere with the governorcontrolled en gine speed is extremely dangerous The govemoris pro videdas a means...

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Page 15: ...il the proper opening is obtained See Fig 9 After tightening the locking screws recheck breaker point gap to make sure it has not changed If it is found that the breaker points have become rough they...

Page 16: ...on flywheel is on line with the mark on the ertical centerline of the shroud as shown on Fig 11 Leave flywheel in this position At this point the e way for mounting the flywheel is also on top Reasse...

Page 17: ...r when adjusting spark advance ELECTRICAL WIRING CIRCUITS NOTE Beginning with engine serial No 3987113 the standard wiringcircuits for all 12voltelectrical equipment is negative ground polarity in pla...

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Page 19: ...ausingdifficulty in starting To remedy this condition remove the spark plugsandpourabout a fluid ounceof crankcaseoil through the sparkplugholeinto eachcylinder Turnengineover several timeswiththe han...

Page 20: ...exhaust pipe with high back pressure etc These conditions may affect the starting but do not necessarily mean that the engine is improperly adjusted As a guide to locating any difficulties which might...

Page 21: ...See Page 15 Condensation on spark plug electrodes Magneto or distributor breaker points pitted or fused Magneto or distributor breaker arm sticking Magneto or distributor condenser leaking or grounded...

Page 22: ...establish the polished bearing surfaces which are so necessary for good performance and long engine life There is no quick way to force the establishment of good bearing surfaces and these can only b...

Page 23: ...heat deflectors then remove the screws holding the flywheel shroud to gear cover On power units remove the front end panel together with flywheel shroud Remove the rear end panel complete with fuel t...

Page 24: ...kcase with soft metal ham mer and maintain a 003 to 004 inch clearance be tween idler gear and shoulder of shaft Lock shaft in place with the Allen set screw OIL PAN The engine can now be inverted so...

Page 25: ...Clearance between the piston and cylinder must be measured at the center of the thrust face at the bottom of the piston skirt Refer to Chart Fig 32 for proper clearance The thrust faces on the piston...

Page 26: ...RING PISTON PIN TO CONNECTING RODBUSHING PISTON PIN TO PISTON 002 to 004 001 to 003 0004 to 0012 0000to 0008 tight CONNECTING RODTO 009 to 016 CRANK PIN SIDE CLEARANCE CONNECTING RODSHELLBEARING 0012...

Page 27: ...fter proper assembly When reassembling crankshaft the timing marks on the crankshaft gear and the camshaft gear must be matched as shown in Fig 24 otherwise engine will not operate properly or if timi...

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Page 29: ...hru the pipe plug opening nearest to the en gine Loosen Iockscrew one full turn or enough to relieve the tension of the lock against the notches on the adjusting ring Then turn engine over slightly to...

Page 30: ...while the engine is running so the mixture will be drawn into the engine The air cleaner connection will of course have to be disconnected from the carburetor to do this All the oil should be drained...

Page 31: ...acket 15 in the left hand with the rocker arm toward your body and the thumb nail on the end of link 10 With the heel of right hand on dia phragm 1 compress the diaphragm spring 11 and the same time p...

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Page 33: ...ed by engine speed The maximum amperage output for Model VH4Dis Maximum RPM IOAMP System 25 AMP Syetem 2800 9 amps 20 amps Whenassured that the problem is with the alternator follow the tests outlined...

Page 34: ...n stall new rectifier module 3 3 Rectifier not at fault Check Stator per Test 4 0 FLYWHEEL ALTERNATOR COMPONENTS STATIC TESTS Thefollowingtest equipment is required DF83 Analyzer Wisconsin Part Fig 44...

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Page 36: ...ntacts or relay adjustmentsare necessaryfor voltage regulation Thealternat is wiredinto the engineelectrical system per Fig 45 IMPORTANT This is a NegativeGround system Charging componentswill be dama...

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Page 38: ...ing mixture through two holes one of which is controlled by the idle adjusting needle Turning the adjusting needle counter clockwise out permits more of the emulsion to reach the air stream and make t...

Page 39: ...the fuel valve seat 31 and fibre washer 30 using Zenith Tool No C161 85 7 Remove the idle adjusting needle 17 and spring 18 CLEANING Thoroughly clean all metal parts in Bendix Metalclene or Speedclen...

Page 40: ...ing is frequently referred to as an inside bowl vent IDLE DISCHARGEHOLES IDLE NEEDLE E PLATE Idle Position IDLE AIR IDLE JET IDLE PICK UP PASSAGE Fig 3 High speed system Fig 3 controls thefuelmixture...

Page 41: ...d the mixture ratio must be rapidly reduced This change is accomplished through adjustment of the choke valve and the automatic opening of the poppet valve to admit more air when the engine fires FLOA...

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Page 43: ...0 inch pounds torque FLOAT SETTING Fig 2 With fuel bowl removed and float assembly in place turn throttle body upside down so that float assembly is on top Check float height with a depth gauge Settin...

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Page 45: ...h a new factory impregnated wick Other than this the magneto does not require field lubrication No attempt should be made to oil or grease the magneto bearings The magneto lubricant should be replaced...

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Page 47: ...ND SPACER INCLUDES 1 20121020 2 5 2 ROTOR i 3 20120003 DUST COVER 1 4 20120010 DISTRIBUTOR CAP GASKET 1 5 20120011 ROTOR SPACER 1 6 20120004 MAGNET ASSEMBLY 1 7 20120005 ELECTRONIC MODULE INCLUDES 1 S...

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