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TOPIC: 1973 ct3 source coil resistance

1973 ct3 source coil resistance 15 Aug 2019 14:15 #1

  • Tvondra05
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I believe I have a faulty source coil, but my service manual doesnt give me what reading I should have. My coil tests 2.1 ohms @ 75 degree ambient temperature. I feel this is a bit high.

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1973 ct3 source coil resistance 15 Aug 2019 19:30 #2

  • MarkT
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Sounds like a good reading to me.

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1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250

1973 ct3 source coil resistance 16 Aug 2019 20:33 #3

  • RT325
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Yep, as MarkT says, sounds good. Found my original yamaha service data from work & says 2.1ohms believe it or not so sounds perfect. Give the points a scratch & might be away.

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1973 ct3 source coil resistance 16 Aug 2019 20:42 #4

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Not meant to be on its side--sorry, annoying.
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Last Edit: by RT325.
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