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Problems with Yamaha SR 250 SE Bj.1983 3Y8


KY-Ralph
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I have the following problems with a built 1983 SE SR 250 to 13kW:

The bike was standing 4 years and was moved only sporadically.

It does, unfortunately, only after an oil change, new spark plug and cables, and cleaning the carburetor only a top speed of 80-85 KM / H (with one person).

In 4th gear you can turn minutes to almost 8,000 rpm (longer trust I am not), but when fifth in the Gang turns it rotates only to max 5300 rpm and has no power to say of slight slope they will be slower.

Any help obout this problem ??

excuse my bad english.

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  • 2 weeks later...
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you dont say if its missing, tick over is correct etc, i would start by checking the ignition timing, are these cdi?

if not the auto advance mechanism (if it has one) isnt stuck

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