Briggs & Stratton 252700 Spécifications Page 1

ENGINE ALTERNATOR REPLACEMENT GUIDEanother free manual from www.searstractormanuals.com

8NO‑LOAD STARTER CURRENT DRAW 12 VOLT STARTER MOTORS 300mV(STARTER MOTOR REMOVED FROM ENGINE)To check the no‑load amperage draw of a 12 volt starter

9STARTER CURRENT DRAW – 12 VOLT STARTER MOTORS 300mV(STARTER MOTOR MOUNTED ON ENGINE)To check the amperage draw of a starter motor mounted on

10AC VOLTAGE OUTPUT CHECK v 1. Insert RED test lead into v receptacle in meter. 2. Insert BLACK test lead into COM receptacle in meter. 3

11DC AMPERAGE OUTPUT CHECK See Note Below For 1/2 Amp and System 3 & 4 AlternatorsSee Page 14 for Special Instructions on Checking DC Ampe

12CHECKING DC AMPERAGE OUTPUT16 & 20 AMP REGULATED ALTERNATORTo avoid blowing fuse in meter when testing DC output of 16 and 20 amp system

13STARTER MOTOR CURRENT DRAW 120 VOLT STARTER MOTORS A Use Line Current Adapter, Tool part number 19358, when checking current draw on 120 volt

14C-Ring Type Roll Pin Type Steel Ring GearCLUTCH DRIVERETAINERSPRING WASHERRETURN SPRINGPINION GEARBEVELED EDGE UPSTARTER CLUTCHWASHERROLL PIN-SLOT U

15Briggs & Stratton engines are equipped with a number of different alternator systems to meet the requirements of equipment manufacture

16• 3 amp DC unregulated for charging battery (ONE RED lead from stator).• 14 Volts AC for lighting circuit (ONE BLACK lead from stator).• Diod

17ENGINE/ALTERNATOR REPLACEMENT INFORMATIONWith the exception of the AC Only alternator, all of the alternator systems referred to in this book have a

ThePowerPortal.comBriggs & Stratton has developed a powerful and flexible private web-based portal for its family of products, ThePowerPortal.com.P

18The following are alternator replacement combinations which require an adapter harness. All of the necessary components are shown.1. Original engi

193. Original engine equipped with Dual Circuit alternator. Replacement engine equipped with 5, 9, 10 or 16 amp regulated system. Modify 692306 harne

205. Original engine equipped with Dual Circuit alternator. Replacement engine equipped Tri‑Circuit alternator.Discard 691955 diode harness suppl

21BRIGGS & STRATTON ENGINE REPLACING ENGINE OF ANOTHER MANUFACTURERWhen replacing the engine of another manufacturer with a Briggs &

2254321+-+−Typical Dual Circuit Alternator Wiring Diagram Original 5 Pole Switch Superceded to 6 Pole Switch, Briggs & Stratton Part Number 692318

2354321+-6+−+ −Typical Dual Circuit Alternator Wiring Diagram 6 Pole Switch − Briggs & Stratton Part Number 692318KEY SWITCH TESTSWITCH POSITION C

24643521Typical Dual Circuit SystemSTATORSTARTER SOLENOIDBATTERYSTARTERBLACK AC OUTPUTWHITE CONNECTORDIODERED DC OUTPUTAMMETERSTART SWITCH LIGHT SWI

2554321+-+−Typical 16 Amp Regulated AlternatorWiring Diagram 5 Pole Switch − Briggs & Stratton Part Number 692318KEY SWITCH TESTSWITCH POSITION CO

26-654321+ −++−Typical 16 Amp Regulated AlternatorWiring Diagram 6 Pole Switch − Briggs & Stratton Part Number 692318KEY SWITCH TESTSWITCH POSITIO

27-654321+ −++−Typical 16 Amp Regulated Alternator Wiring DiagramWith Charge Indicator Light 6 Pole Switch − Briggs & Stratton Part Number 692318K

1Table of ContentsContinuity Checks ‑ Switches ...

28643521-+Typical 10/16 Amp SystemSTARTER RELAYSEAT SWITCHGROUND WIRE TERMINALALTERNATORSTARTERAMMETERCLUTCH BRAKE SWITCHDBCACBABACDELIGHT SWITCHELECT

29+-654321+ −+−Typical 5/9 Amp Regulated Alternator Wiring DiagramWith Charge Indicator Light 6 Pole Switch − Briggs & Stratton Part Number 692318

30654321+ −+-+−Typical Tri-Circuit Alternator Wiring Diagram6 Pole Switch − Briggs & Stratton Part Number 692318KEY SWITCH TESTSWITCH POSITION CO

31Simplied “Tri-Circuit” System43521BACDELIGHT SWITCHBATTERYSTATORSTARTERSTARTER SOLENOIDSTART SWITCH INTERLOCK SWITCH P T O SWITCH1 25W RESISTORGRE

32543 2+1−+−ABONOFFNote: If clutch switch is in ON position with keyswitch OFF, battery will discharge through clutch. To prevent this, route wire B t

33+−54321+−6ONOFFTypical Tri-Circuit Alternator Wiring Diagram – With Resistor – 6 Pole Switch − Briggs & Stratton Part Number 692318KEY SWITCH TE

34Typical Complex Tri-Circuit System43521-+BACDESTART SWITCHBATTERYSTATORSTARTERSTARTER RELAY LIGHT SWITCH CLUTCH/BRAKE SWITCH P T O SWITCHGREEN CONNE

35V-TWIN WIRE HARNESSDESCRIPTION M40/44 WITH #2 SIDE REGULATOR, W/O EFMM49 WITH #1 SIDE REGULATOR, W/O EFMM40/44/49 WITH #1 SIDE REGULATOR, WITH EFM

36WIRE IDENTIFICATION REFERENCETERMINAL ENGINE TERMINATION POINTA CYLINDER #1 COILB CYLINDER #2 COILC CARB SOLENOIDD GROUNDE POWER SUPPLY TO REGULATOR

37 2367122367123456GROUND(ON CYLINDER SHIELD)STATORTHERMISTER6 PIN CONNECTOR(ENGINE SIDE)CYLINDER #1ARMATURECYLINDER #2ARMATURECARB MANIFOLD ASSEMBL

2RESISTANCE CHECKS 1. Insert RED test lead into v receptacle in meter. 2. Insert BLACK test lead into COM receptacle in meter.3. Rotate selecto

38V-TWIN 6 PIN CONNECTORV-TWIN WITH DUAL 2 PIN CONNECTORSV-TWIN WITH 2 PIN CONNECTOR AND 1 PIN CONNECTORHOLE #2 "3 AMP ALTERNATOR AC" COLO

39VIEW FROMTERMINAL ENDVIEW FROMTERMINAL ENDOIL PRESSURE (GREEN)13STARTER SOLENOIDBATTERY + (ORANGE)OIL PRESSURE (GREEN)CUSTOMER CONNECTIONTO FIT INDA

40Some Vanguard™ V‑Twin engines are equipped with the Performance Control™ electronic governor control system for generator or welder application

41AWG Wire Sizes (see table on the next page) AWG: In the American Wire Gauge (AWG), diameters can be calculated by applying the formula

42AWG gaugeConductorDiameter InchesConductorDiameter mmOhms per 1000 ft.Ohms per kmMaximum amps for chassis wiringMaximum amps for power transmissionM

43Alternator & Connector Tester Settings Tester Leads Speed & ReadingsSYSTEM 3 & 4 also quantum 120000 1/2 amp DCRed to 10 ampAmps DC2,8

44AAC sine wave: A symmetrical wave form that contains 360 degrees.AC voltage test: A test that uses a volt meter to indicate the vo

45core: The laminations in the generator constituting the magnetic structure thereof.cradle: The metal frame that surrounds and protects the generator

46inductive eld coil: A coil of wire, attached to a segmented iron core, that produces a magnetic eld when current is passed through it.ioni

47rated voltage: The rated voltage of an engine generator set is the voltage at which it is designed to operate. rear bearing carrier: The cast

3DIODE CHECKS In the Diode Test position, the meter will display the forward voltage drop across the diode(s). If the voltage drop is l

48watt: Unit of electrical power. In DC equals volts times amperes. In AC equals effective volts times effective amps times power factor

BRIGGS & STRATTON ALTERNATOR CHART(10 A.)160000170000190000220000250000280000290000303000310000320000330000350000380000400000420000460000(13 A.)40

CSSD / IDN EDUCATIONAL DIRECTORSMS-0415- 1/10BRIGGS&STRATTON CUSTOMER EDUCATIONFor more educational information contact us at 1-800-934-7730 or e

4NOTE: Metal cased rectiers must also be tested for “grounds”, as follows:With BLACK test lead probe contacting rectier case, touch eac

5CONNECTS TO NEGATIVE BATTERY CABLEFOR BLACK LEAD FROM METERRESISTANCE SECTIONFOR RED LEAD FROM METERCONNECTS TO NEGATIVE BATTERY POSTPrevious StyleC

6Now, let’s add charging current from the alternator system owing through the shunt. Resistance through the shunt will stay the same. We know the cur

7DC SHUNT INSTRUCTIONSThe DC shunt, part number 19468 readily adapts to standard mount, side mount or tab type battery terminals. The shunt