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Serious transmission/gearbox issue #153387 06/21/22 08:16 PM
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Sequoyah Offline OP
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So I have a very interesting issue that I wish I didn't have..

When the bike says it's in Neutral "green N light on" -- the bike is actually in gear and feels like second gear.

When i downshift to first or third or 4th the bike rear tire locks up and skids harder than the brake ever could.

Thankfully the clutch still works! (My only neutral at this point lol)


My local mechanics don't even want to touch it..

Thoughts? Feelings? Am I f'd or what?

Re: Serious transmission/gearbox issue [Re: Sequoyah] #153388 06/21/22 09:48 PM
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I'd say the movement of the gears in the transmission is compromised. Probably from abuse since this is the first I've heard about this problem. If for some mechanical reason the bike is in two gears at the same time the transmission will lock up. Or if it is unable to shift out of a previous gear before selecting the next gear. I gather when the rear locks up the engine will stall? Unless the clutch is pulled in.

As for being f'd, I'd see if there are any metal filings in the oil. The repair may come down to a broken level or rod in the transmission that's preventing a gear to move. If that part isn't available, then it's SOL. I've not had an XT transmission apart so these are my impressions. A mechanic may sense a serious repair, expensive exploratory, dead end, no parts and an unhappy customer. Hopefully others will be able to provide better information. Good luck.


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Re: Serious transmission/gearbox issue [Re: Sequoyah] #153390 06/22/22 02:57 AM
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Sequoyah Offline OP
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Should i just say 'uck it and throw in a whole new engine assembly? Thinking of upgrading to a 250- Might have to alter the exhaust pipe to fit though, also looks like the 223 cc engine left some room as it is

https://www.ebay.com/itm/15-Yamaha-XT-250-XT250-engine-motor/274518155741?hash=item3fea8ea1dd:g:TmYAAOSwTVtfd2qZ&pageci=7aa98249-989e-4624-b13c-58c85f37c2b3&redirect=mobile


Additionally I'm looking for an XT transmission rebuild video, has anyone found this or seen this online?

Last edited by Sequoyah; 06/22/22 04:55 AM.
Re: Serious transmission/gearbox issue [Re: Sequoyah] #153393 06/22/22 02:26 PM
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peejman Offline
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Do you have a 225 or a 250?

The gearbox isn't super complicated, the issue would be parts availability. It appears most of the parts for the 225 are available. I also suspect a bent/broken shift fork or rod. I helped a friend rebuild the transmission on his ZX-9R years ago. Other than it being a lot of parts to keep track of, it wasn't hard. The service manual will step you through the whole process.


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2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.
Re: Serious transmission/gearbox issue [Re: Sequoyah] #153399 06/27/22 03:45 PM
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Has somebody had it apart?


Current: 1958 Ariel 650 FH, 2014 Tiger Sport1050, 1995 XT225 Serow, 2016 Tiger 800 XRx.

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