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Makotosun

New DT250MX registered 1979

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Replied by Gr8uncleal on topic New DT250MX registered 1979

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 from near Salisbury, Wiltshire.

Presumably you have a UK/Euro model, as opposed to a US import?

CMSNL may help, and there is also a service manual in the Tech Library (link attached). However, these are for the US models, so your best bet is to source a parts and service manual - these are invaluable. Saying that, much of the US vs UK info is likely the same.

Vintage Yamaha Enduro Fans - 1977 DT250/400D Factory service Manual



 
The following user(s) Liked this Post: Ht1kid
07 Apr 2025 08:00 #11

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Replied by RT325 on topic New DT250MX registered 1979

I'll just add half jokingly & without knowing what problem you're chasing, but a lot of carb issues end up being a restricted exhaust from carbon buildup mostly in the restrictive spark arrestor.
The following user(s) Liked this Post: Sneezles61
07 Apr 2025 08:06 #12

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