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Discussion Starter · #1 ·
Hello all,

I have a question about replacing a Triumph 650 gearbox mainshaft.

I have a '67 bonnie engine that the very end of the mainshaft broke off of. I have been trying to sell the bike as is, but haven't had so much as a nibble. So I'm going to go ahead and fix it.

Having never been in a Triumph Gearbox, can someone offer the easiest way to get this job done? I do have a pretty good collection of Triumph tools that I've been hoarding up for a restoration project I'm planning and I have plenty of parts manuals, repair books, etc.

What I don't know, is if I can pull the clutch assembly, drive sprocket, and inner gearbox cover, then remove only the mainshaft, without disturbing the bulk of the gearbox.

Any help would be appreciated.

Best Wishes,

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