I picked up an old Yamaha gas golf cart

cgtech · 06-03-2015, 08:14 PM

Bad brushes = no start, no charge. The small green & red wires are the field wires to control charging intensity. Check the small red wire for some activity, this would not be present if the voltage regulator is bad, or a wire is broken.

kip_66 · 06-03-2015, 09:47 PM

CGTECH,
Thank you for the quick response. This is my first golf cart, so this is all new to me. How do I check the red wire for activity? How do I check the voltage regulator? Thank you so much for your advice.

Kip
U.S. Army

cgtech · 06-03-2015, 10:03 PM

Black test lead to battery negative, red test lead to small red wire @ starter/generator, if you get no power while engine is running, the voltage regulator is bad, or some wiring fault (i would shove a skinny paperclip into the plug red wire as a test port, so test can be done while green & red wire plugged in). The charge coil itself inside the starter generator has a 100% reliability rating in my 8.5 years of working on these things, but can easily be tested with ohm meter.

JcXtreme72 · 06-04-2015, 04:05 AM

Cgtech is like some sort of mad genius when it comes to wiring. Always helped me out.

kip_66 · 06-04-2015, 06:30 AM

CGTECH,
Thank you so much!!! I am going to give that a try this weekend for sure.

Kip
U.S. Army

Mr. Mike · 06-04-2015, 08:17 AM

Kip_66 - It could be the starter generator brushes, it could be a voltage regulator or it could simply be a bad connection somewhere. I'm sure somebody will chime in soon. You'd probably be better off if you start a new thread for this.

Oh and $200 for a running G9 is a he77 of a deal! Nice find.

cgtech · 06-04-2015, 09:29 AM

Quote:

Originally Posted by cgtech

Black test lead to battery negative, red test lead to small red wire @ starter/generator, if you get no power while engine is running, the voltage regulator is bad, or some wiring fault (i would shove a skinny paperclip into the plug red wire as a test port, so test can be done while green & red wire plugged in). The charge coil itself inside the starter generator has a 100% reliability rating in my 8.5 years of working on these things, but can easily be tested with ohm meter.

May have made a mistake on the test procedure. Probably should test at both the green wire & red wire, instead of battery negative & red wire.

mclldavidson · 06-04-2015, 03:30 PM

I was cleaning off the engine and when I was pulling off the air filter housing the carb broke off, I fear this will be an expensive repair. What are my options?

jeff70 · 06-04-2015, 05:22 PM

http://www.diygolfcart.com/Yamaha-G2...002-(5928).htm

raydhd · 06-04-2015, 05:22 PM

The carb spacer is cheap at around $20.

06-03-2015, 08:14 PM	#11
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: I picked up an old Yamaha gas golf cart Bad brushes = no start, no charge. The small green & red wires are the field wires to control charging intensity. Check the small red wire for some activity, this would not be present if the voltage regulator is bad, or a wire is broken.

06-03-2015, 09:47 PM	#12
kip_66 Not Yet Wild Join Date: Jun 2015 Posts: 20	Re: I picked up an old Yamaha gas golf cart CGTECH, Thank you for the quick response. This is my first golf cart, so this is all new to me. How do I check the red wire for activity? How do I check the voltage regulator? Thank you so much for your advice. Kip U.S. Army
kip_66 Not Yet Wild Join Date: Jun 2015 Posts: 20

06-03-2015, 10:03 PM	#13
cgtech Over This Interview Is... Join Date: Jun 2012 Location: AZ Posts: 17,449	Re: I picked up an old Yamaha gas golf cart Black test lead to battery negative, red test lead to small red wire @ starter/generator, if you get no power while engine is running, the voltage regulator is bad, or some wiring fault (i would shove a skinny paperclip into the plug red wire as a test port, so test can be done while green & red wire plugged in). The charge coil itself inside the starter generator has a 100% reliability rating in my 8.5 years of working on these things, but can easily be tested with ohm meter.

06-04-2015, 04:05 AM	#14
JcXtreme72 Gone Wild Join Date: Jan 2011 Location: Las Vegas, Nevada Posts: 1,942	Re: I picked up an old Yamaha gas golf cart Cgtech is like some sort of mad genius when it comes to wiring. Always helped me out.

06-04-2015, 06:30 AM	#15
kip_66 Not Yet Wild Join Date: Jun 2015 Posts: 20	Re: I picked up an old Yamaha gas golf cart CGTECH, Thank you so much!!! I am going to give that a try this weekend for sure. Kip U.S. Army
kip_66 Not Yet Wild Join Date: Jun 2015 Posts: 20

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06-04-2015, 08:17 AM	#16
Mr. Mike It's Beer Time! Join Date: Sep 2010 Location: Vineland, NJ Posts: 1,462	Re: I picked up an old Yamaha gas golf cart Kip_66 - It could be the starter generator brushes, it could be a voltage regulator or it could simply be a bad connection somewhere. I'm sure somebody will chime in soon. You'd probably be better off if you start a new thread for this. Oh and $200 for a running G9 is a he77 of a deal! Nice find.

06-04-2015, 05:22 PM	#19
jeff70 Gone Wild Join Date: Mar 2014 Location: Bountiful, Utah Posts: 884	Re: I picked up an old Yamaha gas golf cart http://www.diygolfcart.com/Yamaha-G2...002-(5928).htm

06-04-2015, 05:22 PM	#20
raydhd VC 460 CLONE GONE WILD Join Date: Oct 2014 Location: Ray BY The Bay NJ Posts: 10,639	Re: I picked up an old Yamaha gas golf cart The carb spacer is cheap at around $20.

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