Sounds like it could be a very expensive exercise if you are not careful!

I strongly recommend sourcing a 1996 workshop manual (they are in dual-language Japanese/English format) as it is extremely comprehensive. It will advise you on everything from chassis setup, ignition setting, and carburetion... even how to correctly install the motor!

An HRC RS250 NX5/NXA is a world apart from any 2-stroke road bike, and setup (even spark plugs) is absolutely critical to not only its performance, but also it's longevity.

Honestly, no offence meant, but if you are asking whether it needs different plugs for different weather conditions, then I suggest you seriously consider a manual before firing it up again!
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Andy.
NSR-WORLD.COM

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