| Also known as | 251, JRC 18-100 |
| Listed in parts books | Not catalogued by year yet |
HAYNES TRI PREUNIT 47-62
Haynes workshop manual for pre-unit Triumph twins, 1947 to 1962.
This is the Haynes workshop manual covering Triumph pre-unit twins built from 1947 to 1962. It's a shelf reference, not a mechanical part, but Ed keeps it at the counter because half the fitment questions that come up on these old pre-unit motors get answered faster with the book open than with a parts diagram.
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If you're working on an early Triumph twin from this era, this manual walks through the engine, gearbox, and chassis as Triumph built them before the unit-construction change. It's a good companion to have alongside whatever parts book you're already using to cross-check numbers.
We don't have much more catalog detail on this one beyond the title itself, so if you're not sure whether this is the right manual for your specific machine, give the shop a call and we'll help confirm before you order.
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