ALL four strokes have a new air filter and new filter carrier since January 2001.
The new filter has 3 holes at the back. The old one has only 1 hole.
The filter carrier is also modified.
See in your spare parts manual page 16 : version 1 is the old version
version 2 is the new version
I guess a lot of 2001 US RFS are shipped in 2000. If so, you will have the old version.
So be careful when buying a new air filter for a 2001 model. Buy the right one !
Do not remove the screen in your new filter carrier. It is for fire prevention (back firing) and removing will not give you extra power.
If you find spelling mistakes, keep them
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