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Old 12-30-2009, 10:55 PM   #1
nowashburn
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Default Yamaha G2 ignitor

Hi all,

I have an old Gas Yahama G2 that suddenly wouldn't start. I took a look at the ignitor box and noticed the the wires were in REAL bad shape. It looks like someone just started ripping this thing apart before or for some reason it has REALLY bad wear. Anyhow, there are a couple of wires that got completely disconnected from the wire harness that plugs into the ignitor. Does anyone have a picture or diagram that show which wires go where into the ignitor plug / harness? Also, if anyone else has any suggestions it would be greatly appreciated. Thanks in advance!

- Eric
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Old 01-01-2010, 09:50 PM   #2
cart de golf
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Default Re: Yamaha G2 ignitor

look a litlle higher on the page wiring diagram
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Old 01-02-2010, 10:55 AM   #3
nowashburn
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Default Re: Yamaha G2 ignitor

Quote:
Originally Posted by cart de golf View Post
look a litlle higher on the page wiring diagram
Ah, right in front of my face! Thanks for pointing that out. However, they dont exactly have a diagram for a gas G2, but would it be safe to assume it is the same for a gas g8?

http://www.cunninghamgolfcar.com/ima...maha%20G8A.pdf

they look very similar.
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Old 01-02-2010, 11:36 AM   #4
smallblock450sl
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Default Re: Yamaha G2 ignitor

Does this help? go to page 71.
Attached Files
File Type: pdf om_0000000077_VS6PF.pdf (4.45 MB, 81 views)
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Old 10-20-2010, 09:49 PM   #5
thezigman
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Default Re: Yamaha G2 ignitor

What is the function of the ignitor?
Is it like an electronig ignition or something?
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Old 10-21-2010, 11:09 AM   #6
sho305
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Default Re: Yamaha G2 ignitor

It works like a CDI. Its function is to retard the timing at low rpm. It starts at 0 advance and above 1K rpm it raises up to max of ~30 degrees at 2500rpm. Possibly what some of the big block people would love to have. The pickup is mounted advanced, and at under 2500 it retards the timing. There is a graph showing it in my manual. Sometimes mine kicks back when starting hot, makes me think mine is getting bad and not retarding it but hard to tell without checking the timing.
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Old 10-21-2010, 05:09 PM   #7
SteveRand
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Default Re: Yamaha G2 ignitor

Here is a G2 gas schematic. I cleaned it up from a really bad scan. Hope it helps!
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File Type: jpg G2 Schematic.jpg (98.4 KB, 37 views)
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