AlternAtor - Briggs & Stratton
AlternatorSpecifications
MetersDiagnostic Tool19468DC ShuntThe DC shunt is a very useful tool,especially when working with higheramperages. To use, the electricalsystem must be opened and theshunt installed on the negative terminal of the battery. In this position, all energy going into and coming out of the battery must pass through the shunt. Theshunt is designed to read voltage drops due to the resistance of the metal between the two meter lead connections. The resistance value has been carefullyset to allow the meter to use the millivolt scale. In use, 1 millivolt equals 1 amp.Dealing with millivolts is much safer than dealing with amps.
IntroductionTo identify an alternator system, inspect wire or wires that comefrom under or behind the blower housing. A single wire with no diode is generally, but not always, anAC only system A single wire with a diode is generally a DC only system. Thediode rectifies AC to DC for battery charging. This systemis unregulated in that the energy delivered to the battery istotally dependent on engine speed A red wire with a diode and black wire without a diode is aDual Circuit system that offers DC for battery charging andAC to power lights A single wire feeding an electronic component (regulator/rectifier) is a rectified and regulated system which is lessdependent on engine speed than the DC only system Two wires of the same color feeding a regulator/rectifier is arectified and regulated system that offers even more energyMost Digital Multi Meters (DMM) are able to read up to 10 amps forshort periods of time. At or above 10 amps, consider using a DCshunt or a clamp on type meter to prevent meter damage.When measuring energy being returned to the battery, Briggs &Stratton specifications are provided in DC amps. The power is initiallyprovided from the stator as AC and must go through a rectificationprocess. If the battery will not charge, the fault may be the battery,rectifier (diode), regulator/rectifier or stator. A troubleshooting flowchart will usually start at the battery and work backwards. As there isno bench test for regulator/rectifiers, test AC output from the stator.If the battery and AC output are OK, replace the regulator/rectifierby process of elimination.AC tests are made for AC volts while tests for DC charging outputare made in DC amps. One or both will be used to check the healthof all Briggs & Stratton alternator systems. Briggs & Stratton Alternator Specifications MS2288bk 6/11
IntroductionHow to UseThese cards supply information on the different alternator systemsprovided by Briggs & Stratton. Identify the system being tested bythe wire or wires that extend from behind the flywheel. Record thenumber and color of the wires and the color and general type ofconnector the wires terminate in.At the top of each card is the system name displayed on thatcard followed by a picture of the wire(s), color and connector. If aregulator/rectifier is part of the system, a picture will be displayedof it. From this information, determine which system is installedon the engine to be tested. Once the system is identified, turn thecard over. The first graphic is how the system would be installedin the simplest manner. The next graphic is how to hook up thetest meter. Test specifications to expect follow at the bottom ofthe page.TestingUnregulated charging systems always deliver the same amountof energy to the battery (based on rpm) whether it requires chargeor not.Regulated charging systems are designed to provide charge to thebattery based on its need.The output from the unregulated system is predictable as long asthe rpm is held steady.Regulated system output will vary based on the battery state ofcharge. After activating the starter motor to start the engine,charge rate will typically be high as the alternator replaces theenergy used by the starter. The charge rate will reduce slowlyas the battery state of charge levels off. This means that testspecifications can be a moving target. The test specificationsfor regulated systems are generally stated as a range such as1 to 10 amps DC or 3 to 16 amps DC. Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator794103 Briggs & Stratton Alternator Specifications MS2288bk 6/111
DC OnlyTest Specifications @ 2800 rpmAC voltsNADC amps.5 adc minimumDC amps.4 adc minimum(DOV engines with an aluminum flywheel)1 Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator397880 Briggs & Stratton Alternator Specifications MS2288bk 6/112
DC OnlyTest Specifications @ 2800 rpm2AC voltsNADC amps.5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator793640Diode391507 Briggs & Stratton Alternator Specifications MS2288bk 6/113
DC OnlyTest Specifications @ 3600 rpm3AC voltsNADC amps1.5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator695730Diode391507 Briggs & Stratton Alternator Specifications MS2288bk 6/114
DC OnlyTest Specifications @ 3600 rpm4AC voltsNADC amps3.0 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator694457Diode391507 Briggs & Stratton Alternator Specifications MS2288bk 6/115
DC OnlyTest Specifications @ 3600 rpm5AC voltsNADC amps1.5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator696578Diode391507 Briggs & Stratton Alternator Specifications MS2288bk 6/116
DC OnlyTest Specifications @ 3600 rpm6AC voltsNADC amps3.0 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
DC OnlyPartPart NumberStator393809Diode391507Harness393422 Briggs & Stratton Alternator Specifications MS2288bk 6/117
DC OnlyTest Specifications @ 3600 rpm7AC voltsNADC amps3.0 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
AC OnlyPartPart NumberStator391595 Briggs & Stratton Alternator Specifications MS2288bk 6/118
AC OnlyTest Specifications @ 3600 rpm8AC volts14 vacDC ampsNA Briggs & Stratton Alternator Specifications MS2288bk 6/11
Dual CircuitRectified or RegulatedPartPart 0292 Briggs & Stratton Alternator Specifications MS2288bk 6/119
Dual CircuitRectified or RegulatedTest Specifications @ 3600 rpm9AC volts14 vacDC amps3 adcDC amps through regulator5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
Dual CircuitRectified or RegulatedPartPart 0292 Briggs & Stratton Alternator Specifications MS2288bk 6/1110
Dual CircuitRectified or RegulatedTest Specifications @ 3600 rpm10AC volts14 vacDC amps3 adcDC amps through regulator5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
Dual CircuitRectified or RegulatedPartPart 0292 Briggs & Stratton Alternator Specifications MS2288bk 6/1111
Dual CircuitRectified or RegulatedTest Specifications @ 3600 rpm11AC volts14 vacDC amps3 adcDC amps through regulator5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
Dual CircuitRectified or RegulatedPartPart 0292 Briggs & Stratton Alternator Specifications MS2288bk 6/1112
Dual CircuitRectified or RegulatedTest Specifications @ 3600 rpm12AC volts14 vacDC amps3 adcDC amps through regulator5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
4 AmpRegulated - MHIPartPart NumberStator715255Regulator715200 Briggs & Stratton Alternator Specifications MS2288bk 6/1113
4 AmpRegulated - MHIThere should becontinuity across twoleads from stator andno continuity betweeneither lead and ground.Test Specifications @ 3600 rpm13AC voltsNADC amps1g4 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
9 Ampwithout batteryPartPart NumberStator698314Regulator698315 Briggs & Stratton Alternator Specifications MS2288bk 6/1114
9 Ampwithout batteryTest Specifications @ 3600 rpm14AC volts40 vacDC amps1g9 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
5 or 9 AmpRegulatedPartPart NumberStator698314Regulator794360 Briggs & Stratton Alternator Specifications MS2288bk 6/1115
5 or 9 AmpRegulatedTest Specifications @ 3600 rpmAC volts5 amps system28 vac9 amps system40 vacDC amps155 amps system5 adc9 amps system9 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
Tri-CircuitPartPart NumberStator696457Harness691955Diode391507DC Shunt19468 Briggs & Stratton Alternator Specifications MS2288bk 6/1116
Tri-Circuit5 amps DC5 amps -DCTest Specifications @ 3600 rpm16AC volts28 minimumDC amps at shunt5 minimum Briggs & Stratton Alternator Specifications MS2288bk 6/11
5 or 9 AmpRegulatedPartPart e differencebetween the 5 and9 amp regulatedsystems is the size ofthe magnets on theflywheel. Small on the5 and large on the 9. Briggs & Stratton Alternator Specifications MS2288bk 6/1117
5 or 9 AmpRegulatedTest Specifications @ 3600 rpmAC volts5 amps system28 vac9 amps system40 vacDC amps at shunt175 amps system5 adc9 amps system9 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
5 AmpRegulated without batteryPartPart NumberStator696457Regulator/Rectifier698315 Briggs & Stratton Alternator Specifications MS2288bk 6/1118
5 AmpRegulated without batteryTest Specifications @ 3600 rpm18AC volts28 vacDC amps5 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
10 AmpRegulatedPartPart NumberStator695466Regulator/Rectifier691185 Briggs & Stratton Alternator Specifications MS2288bk 6/1119
10 AmpRegulatedTest Specifications @ 3600 rpm19AC volts20 vacDC amps1g10 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
10 AmpRegulated - MHIPartPart NumberStator715194Regulator691185Connector, yellow399916 Briggs & Stratton Alternator Specifications MS2288bk 6/1120
10 AmpRegulatedThere should be continuityacross two leads from statorand no continuity betweeneither lead and ground.Test Specifications @ 3600 rpm20AC voltsNADC amps at shunt1g10 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
10 AmpRegulatedPartPart NumberStator715798Regulator691185Connector399916 Briggs & Stratton Alternator Specifications MS2288bk 6/1121
10 AmpRegulatedTest Specifications @ 3600 rpm21AC volts20 vacDC amps at shunt1g10 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
10, 13 or 16 AmpRegulatedPartPart 5Regulator***493219*Brown and orange wirego to charge indicatordevice.**10, 13 or 16 ampsbased on flywheelmagnet size***Blue wire is for acharge indicator light Briggs & Stratton Alternator Specifications MS2288bk 6/1122
10, 13 or 16 AmpRegulatedRd Charge leadBrn Charge indicator lightACRdBrnOrAC808877NOTE: Connect red toorange to turn the systemon and to test output.Blue Charge indicator lightCharge leadACBlueACRdACRd493219DCAC691185Test Specifications @ 3600 rpm10 AmpAC voltsDC amps at shunt13 AmpAC voltsDC amps at shunt16 AmpAC voltsDC amps at shunt2220 vac1g10 adc20 vac1g13 adc30 vac1g16 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
20 AmpRegulatedPartPart NumberStator696579Regulator691573Charge wire691362 Briggs & Stratton Alternator Specifications MS2288bk 6/1123
20 AmpRegulatedTest Specifications @ 3600 rpm23AC volts29 vacDC amps at shunt1g20 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
20 AmpRegulatedPartPart NumberStator790320Regulator790325 Briggs & Stratton Alternator Specifications MS2288bk 6/1124
20 AmpRegulatedTest Specifications @ 3600 rpm24AC volts30 vacDC amps at shunt1g20 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
20 AmpRegulatedPartPart NumberStator795498Regulator790325Regulator793660 Briggs & Stratton Alternator Specifications MS2288bk 6/1125
20 AmpRegulatedTest Specifications @ 3600 rpm25AC volts30 vacDC amps at shunt1g20 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
20-50 AmpRegulatedPartPart NumberStator841178Regulator841170 Briggs & Stratton Alternator Specifications MS2288bk 6/1126
20-50 AmpRegulatedTest Specifications @ 3600 rpm26AC volts45-50 vacAC volts45-50 vacDC amps at shunt3g50 adc Briggs & Stratton Alternator Specifications MS2288bk 6/11
LiteratureMS-0415Engine AlternatorRepower GuideMany of you have used this alternatorreplacement guide to help repowerequipment that use alternatorsystems different from the originalspecification. We have recentlybegun to upgrade this guide to betterreflect the many questions that wereceive from the field. Please notethat this guide can be downloadedfrom The Power Portal website andprinted for FREE. If you would likea hard copy please order MS-0415from your source of supply.Kit19615 REPOWER TERMINAL KITThis Engine Repower Terminal Kit willequip you to handle almost any electricalconnector or terminal service workon nearly any engine. The generousselection of connectors and terminalsprovides you with the necessarycomponents to help perform equipmentrepower. This Engine Repower TerminalKit is designed to be used in the shop orout in the field. Assembled in a durablecase with an easy to follow chart showingthe parts, part numbers, quantities andbin locations, the kit offers 5 empty binsso you can add or store any of yourimportant electrical components or tools.All components are replaceable and canbe ordered individually. This kit is a greataddition to your service repair supplies.
BRIGGS&STRATTONCORPORATIONMS2288bk 6/11CUSTOMER EDUCATIONpost office box 702milwaukee, WI 53201 USA800 934 7730 cust.ed@basco.comCopyright 2011. All rights reserved.
When measuring energy being returned to the battery, Briggs & Stratton specifications are provided in DC amps. The power is initially provided from the stator as AC and must go through a rectification process. If the battery will not charge, the fault may be the battery, rectifier (diode), regulator/rectifier or stator. A troubleshooting flow
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12 V, 21 A Alternator 12,5 V, 14 A Alternator 14 V, 33 A Bosch G1 alternator battery charger curve Alternator battery charger curve (12 V, 21 A) Alternator battery charger curve (12.5 V, 14A) Alternator type Bosch Gil 14 V, 33 A layout Alternator type Bosch Gl 14 V, 33 A Characteristic curves f
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