Your Mikuni HSR comes from the factory with the tuning parts we found to work with the great majority of engine performance modifications. However, the large number of differing after market exhaust and air cleaner systems makes it virtually impossible to accommodate all possible combinations with one carburetor set-up.
Your HSR will almost certainly run correctly on your engine with the installed parts. But, if it doesn’t, you may alter its tuning to suit your engine’s needs by following this guide.
Some exhaust system designs strongly interfere with carburetor tuning. For instance, it is very difficult to get smooth and responsive carburetion through the entire rpm range with open straight pipes and other unbaffled exhausts. In addition, very small volume, small diameter mufflers are often ‘seen’ by the engine as straight pipes and present similar tuning difficulties.
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Your HSR will almost certainly run correctly on your engine with the installed parts. But, if it doesn’t, you may alter its tuning to suit your engine’s needs by following this guide.
Some exhaust system designs strongly interfere with carburetor tuning. For instance, it is very difficult to get smooth and responsive carburetion through the entire rpm range with open straight pipes and other unbaffled exhausts. In addition, very small volume, small diameter mufflers are often ‘seen’ by the engine as straight pipes and present similar tuning difficulties.
get
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