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1974 DT125A Build/Restore

  • torqueflight
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Replied by torqueflight on topic 1974 DT125A Build/Restore

Got the carb back on.
 
Might need some help at this part. 

I used a jump pack on the battery, turned the key on and I have lights, turn signals and the e start cranks/works. Compression sounds good too. 

I pulled the plug to see if there was spark and nothing. The ended up coming off. Anyone know if it can go back on or 
do I need a new wire?
 

Also what on there needs to be cleaned to try and get spark?
 
 
03 May 2021 15:49 #41

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Replied by Schu on topic 1974 DT125A Build/Restore

Ok, I think I might pass next time my dentist offers to clean my bite guard in his ultrasonic cleaner.........
 
Schu

CT175B, CT175C, JT1' JT2' DT360A, GT80B, DT100B, DT125B,
DT175B, DT175C, DT250B, DT400B, Z50, SCR950

Someday, you'll own some Yamahas
03 May 2021 15:50 #42

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Replied by torqueflight on topic 1974 DT125A Build/Restore

Haha. They are grills, but the ultra sonic we used is for carb parts only. 
03 May 2021 15:53 #43

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Replied by torqueflight on topic 1974 DT125A Build/Restore

Nevermind,

Got her running off carb cleaner. Pulled every wire off the stator and sanded and contact cleaned. 

Now to clean the tank. 
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03 May 2021 18:23 #44

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Replied by torqueflight on topic 1974 DT125A Build/Restore

For the record that shift lever is incorrect for an e start bike. 

 

 
 
14 May 2021 19:32 #45

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Replied by Mothersbaugh on topic 1974 DT125A Build/Restore

I assume you meant the end came off? Mine comes off on a CT-2 I own, too. I just stuff it back on, and it runs just fine.
Someone else will help you on what to clean. I have five 125cc bikes, but they all start and run just fine, so I have not tried to fix them, since they are not broken.

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14 May 2021 19:56 #46

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Replied by MarkT on topic 1974 DT125A Build/Restore

I think he meant offset is incorrect...  correct shifter is offset to clear the ignition cover.
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
14 May 2021 20:45 #47

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Replied by Mothersbaugh on topic 1974 DT125A Build/Restore

If you are commenting on me, I was talking about the spark plug connection between the cap and the wire itself. But, yes, the shifter is more rounded and hangs outside the starter cover.
14 May 2021 20:49 #48

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Replied by torqueflight on topic 1974 DT125A Build/Restore


Thanks. Its fully up and running now. Just need some odds and ends and some tires that are close to the right size. 
 
14 May 2021 21:22 #49

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Replied by torqueflight on topic 1974 DT125A Build/Restore

Can anyone speak on gearing?

I finally got her up and running and got half a block before the chain snapped. The gearing seemed crazy low (guessing its stock). Didnt really get to fully test it out, but first gear seems super low. Has anyone up a tooth or two in the front or down in the rear? 
24 May 2021 20:23 #50

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