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Old 12-22-2018, 02:06 PM   #1
Chris West Oz
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Join Date: Jun 2018
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Default Yamaha G1 'no spark'

Hello all,

Trying to restore ignition spark to a Yamaha G1 cart.

Igntion coil specs as per the manual are primary coil resistance of 1 ohm, and secondary coil resistance of 5.9K ohm.

After-market coil, specified for the G1, fitted, shows primary coil at 0.7 ohm and secondary coil at 2.7K ohm. A similar aftermarket coil produced identical results.

Main switch is showing ~5 ohm's on some connections.

Is this after-market coil incompatible with the CDI?

Is the small resistance on the main switch a problem?

Regards.
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Old 12-26-2018, 08:23 AM   #2
CP241
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Default Re: Yamaha G1 'no spark'

Your coil sounds like it is fine. Check resistance on the spark plug cap itself.

If that is fine, may be a CDI issue.
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Old 12-27-2018, 09:33 AM   #3
Lochlin
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Default Re: Yamaha G1 'no spark'

Yeah, assuming your cart's starter is turning then you are looking at cdi, coil, or wiring. Not much else it could be.
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