HomeWisconsinWisconsin vh4d

Wisconsin vh4d Generator Set

The Wisconsin vh4d is a generator set powered by a Wisconsin VH4D engine.

1.76 L
Displacement
4
Document types

Service parts for the vh4d

Grouped by system, with how many of each the parts manual calls for.

Oil system

1 required
277786COil filtersee priceAmazon

Prices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.

Specifications

Ratings spec sheet not in our library yet — see the documents below.

Engine

Wisconsin VH4D
Displacement1.76 L
AspirationAir-Cooled
Rated speed1800 rpm

Maintenance & consumables

for the Wisconsin VH4D
ItemSpecCapacityPart #Interval
Air filter
Fuel filter
Oil filterFig. 1 - Oil Filter277786C Amazon eBay
Battery
Belt
Coolant
Coolant filter
Oilgood quality engine oil4.0
Spark plug

Compatible filters for the Wisconsin VH4D — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Wisconsin LO177 Wisconsin LO189 Donaldson P181050 Donaldson P181052 Wix 42276
  • Fuel filter: Donaldson P550012 Donaldson P555095 Donaldson P550094 Wix 33032 Ac Delco GF142

Common questions

What engine is in the Wisconsin vh4d?

The Wisconsin vh4d is powered by the Wisconsin VH4D engine.

What oil filter fits the Wisconsin vh4d?

The Wisconsin vh4d uses oil filter part number 277786C.

What fuel filter does the Wisconsin vh4d use?

The Wisconsin vh4d uses fuel filter part numbers Donaldson P550012, Donaldson P555095.

What air filter does the Wisconsin vh4d use?

The Wisconsin vh4d uses air filter part numbers WISCONSIN LO177, WISCONSIN LO189.

Troubleshooting

2

Symptoms & remedies

SymptomCauseRemedy
Battery OverchargeTest 1.0 Engine not running check battery with DC Voltmeter. I. 1 If voltage is greater than 13.5 volts 1.2 With engine running at full RPM, check battery voltage with DC Voltmeter. I. 3 If the charge increases beyond 13.5 volts. 1.4 If the charge remains under 13.5 volts.1.1 Place 12 volt light bulb or carbon pile across battery to reduce voltage to below 13.5 volts. 1.3 Faulty regulator, replace, -- static check regulator per 'rest No. 5.1.' 1.4 Alternator functioning properly. Check battery condition.
Low/No ChargeTest 2.0 2.1 Proceed with Test 1.0 and 1.1. It is necessary to slightly discharge battery to make system work. With engine running at full RPM, check battery voltage with DC Voltmeter. If the charge rate increases -- 2.3 If system does not charge 2.4 If charge rate increased with regulator disconnected. 2.5 If charge rate does not increase with regulator disconnected.2.2 Alternator functioning properly. [Battery was fully charged. 2.3 Operate engine with regulator disconnected (continue with Test 2.4). 2.4 Regulator was at fault. Replace regulator module, - static check regulator per Test No. 5.1. 2.5 Regulator not at fault. Check Rectifier per Test 3.0, 3.1 or static check per Test 6.0.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

31
Part #DescriptionQtySystem
277786CFig. 1 - Oil FilterOil filter Amazon eBay
636194Variable Speed Governor Control SwitchIgnition-starting Amazon
63819CVariable Speed Governor Control SwitchIgnition-starting Amazon eBay
93194230-1Fig. 20 Flywheel Alternator (10 and 25 amp systems) with belt driven alternator and solid state ignition - CONNECT TO CHARGE SIDE OF AMMETERBelt Amazon eBay
93C81-66-35Valve and seat, fuel (for 4-8)1Fuel Amazon eBay
93T41-8Lever and stop, throttle (for 1, 2, 4)1Throttle Amazon eBay
93T57-4Shaft and lever, throttle (for 1, 2)1Throttle Amazon eBay
C161-83Main Jet Wrench1Tool Amazon
C161-85Fuel Valve Seat Wrench1Tool Amazon
244949CFig. 17, VH4D, W4-1770 Clutch AdjustmentService part / kit Amazon eBay
275568CFig. 18, VH4D, W4-1770 VG4D, V465D Clutch AdjustmentService part / kit Amazon eBay
3265-8/97Starting and Operating ManualService part / kit buy
93C105-3Shaft, choke (for 1-5)1Service part / kit Amazon eBay
93C106-2Lever assembly, choke clamp (for 15)1Service part / kit Amazon eBay $24.10
93C109-60Screw, lever stop1Service part / kit Amazon eBay
93C140-58Screw, bracket (for 1-5, 7, 8)1Service part / kit Amazon eBay
93T22S8Nut, choke lever nut1Service part / kit Amazon eBay
93T41-10Spring, choke lever (for 1-4)1Service part / kit Amazon eBay
93T8S8-7Screw, lever swivel (for 1-5, 8) (NLA)1Service part / kit Amazon eBay
LZ77BS1Washer, choke shaft packing (for 1-3)1Service part / kit Amazon eBay
LZ77CS1Screw, tube clamp (for 1-5, 8)1Service part / kit Amazon eBay
LZ77GS1Nut, clamp screw (for 1-5, 8)1Service part / kit Amazon eBay
LZ77S1Retainer, choke shaft packing (for 1-3)1Service part / kit Amazon eBay
PD11Nut, 3/8"-24 thread1Service part / kit Amazon eBay
PD79Nut, 3/8"-16 thread1Service part / kit Amazon eBay $9.95
PM210Bracket, choke (for 1-5, 7, 8)1Service part / kit Amazon eBay
QD616Overhaul kit1Service part / kit Amazon eBay $4.50
XD33Screw, 3/8"-16 x 2-1/4" long1Service part / kit Amazon eBay
Y97S2Washer, 3/8" steel1Service part / kit Amazon eBay $90.00
YC-66-D-S1High temperature safety switch1Service part / kit Amazon eBay $139.99
YL100AIgnition cable set1Service part / kit Amazon eBay $44.95

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Available documents

Engine spec — VH4D (Wisconsin)Reference — WISCON High Temp Safety Switch Kits (Wisconsin)Parts manual — dual fuel sys (Wisconsin)Service manual — VH4D Repair (Wisconsin)Service manual — WISCON Operating Manual VH4D W4-1770 VG4D V465D 1997 (Wisconsin)Service manual — magnetos (Wisconsin)