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 Topic: Hey guys new here.....picking up a 1990 MC21.... 







Andy
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Andy » Wed Apr 17, 2019 4:49 pm

When you do get it, ensure the RC Valve operation is smooth, and there are no tight/kinked/sticky cables. If there's any resistance to the RC Valve servo, it can blow the PGM (ECU). That and the centre crank seal are the two weak points of the 89 to 97 NSR250s.

Don't let that put you off at all though, they are unquestionably the most reliable and well laid out 250cc 80s/90s race rep available.
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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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