Briggs and Stratton Vanguard Vtwin too much voltage

Chevyman22360 · 10-05-2009, 05:34 AM

I have a Briggs and Stratton Vanguard VTwin 18 HP motor in my Woods lawn mower and recently the stator quit. I replaced the stator and that tests out fine now, but the voltage at the battery with the motor at full throttle is about 17.3 DC Volts. Is my voltage regulator bad or is there a field wire that isn't sensing the voltage of the battery and causing things to not work right. Thanks for any infor you can provide.!!!

mstpops · 11-08-2009, 11:44 PM

be sure wiring is ok with no shorts or chaffing
do you know what a/c volts that stator should put out @ 3600 rpm
what color lead(s) are comming out of the stator , and how many what color is the connector , if the a/c volts are within min and max limits - i would suspect the regulator rectifier - but make sure rectifier is properly grounded as should the starter motor as sometimes the regulator is mounted on the starter
does the battery check out fine with full charge and a load test

voltage should drop to no less than about 10.25 volts under load for 15 sec or
for a 300 cca battery 150 cca held on tester for 15 sec to pass load test

mstpops

**SABL** · 11-09-2009, 05:14 AM

Hi Chevy,

I don't think the output is too alarming, but you might want to check here for answers:

http://engines.myfaqcenter.com/Answer.aspx?p_faqid=6

Model #'s and outputs:

http://www4.briggsandstratton.com/mi...nator_id_a.pdf

If you note the specs at the bottom of each illustration, some put out as much as 40V.

SABL

10-05-2009, 05:34 AM	#1 (permalink)
Chevyman22360 Registered User Join Date: Oct 2009 Posts: 1 OS: Windows 7	Briggs and Stratton Vanguard Vtwin too much voltage I have a Briggs and Stratton Vanguard VTwin 18 HP motor in my Woods lawn mower and recently the stator quit. I replaced the stator and that tests out fine now, but the voltage at the battery with the motor at full throttle is about 17.3 DC Volts. Is my voltage regulator bad or is there a field wire that isn't sensing the voltage of the battery and causing things to not work right. Thanks for any infor you can provide.!!!

11-08-2009, 11:44 PM	#2 (permalink)
mstpops Registered User Join Date: Oct 2009 Posts: 18 OS: xp	Re: Briggs and Stratton Vanguard Vtwin too much voltage be sure wiring is ok with no shorts or chaffing do you know what a/c volts that stator should put out @ 3600 rpm what color lead(s) are comming out of the stator , and how many what color is the connector , if the a/c volts are within min and max limits - i would suspect the regulator rectifier - but make sure rectifier is properly grounded as should the starter motor as sometimes the regulator is mounted on the starter does the battery check out fine with full charge and a load test voltage should drop to no less than about 10.25 volts under load for 15 sec or for a 300 cca battery 150 cca held on tester for 15 sec to pass load test mstpops

11-09-2009, 05:14 AM	#3 (permalink)
SABL Moderator Relaxation Room Join Date: Jul 2008 Location: Galena, Ohio Posts: 1,224 OS: WinXP SP3	Re: Briggs and Stratton Vanguard Vtwin too much voltage Hi Chevy, I don't think the output is too alarming, but you might want to check here for answers: http://engines.myfaqcenter.com/Answer.aspx?p_faqid=6 Model #'s and outputs: http://www4.briggsandstratton.com/mi...nator_id_a.pdf If you note the specs at the bottom of each illustration, some put out as much as 40V. SABL __________________ Every rose has it's thorn