Bryner wrote on 12/31/69 at 16:00:03:Another question? Do I only change main jet and put half spacer or I have to change other things of the carburator?
That's it. You also need to remove the little cap over the slow mixture screw so you can adjust that richer.
Quote:Do the bike run well if I don't change air filter?
Yes it will run very well without a K&N.
Quote:I read many posts of people who don't upgrade to a K&N because dirt particles can go trought it... what can I do to upgrade air flow withot changing OEM filter?
You can remove the factory snorkel. This will give you more airflow. If you want more flow drill some holes in your filter housing (outside the filter
)