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 Topic: NSR 250 MC21 engine gearbox problems 







Andy
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Andy » Mon Jul 07, 2025 11:36 pm

Hello Felix, and welcome to NSR-WORLD.

Is your transmission "wet" or "dry"?

In case you're unaware, our Honda approved English Service Manual is available here »

Direct link to Section 9 - Transmission Troubleshooting

First thing I would suggest is to get the correct fluid in the transmission. Then check the service information regarding wear limits (both Clutch and Transmission sections), and get back to us. Bear in mind even the newest MC21 motor is over 30 years old now, and things do wear out, but believe it or not, it could be something as simple as a slightly misadjusted clutch cable.
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Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.


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