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well I attend the gym regularly with my Marine buddies who also have a hard time pulling the engine thru. With the plugs out, it pulls easy like it should. I had a 503 for 20 years and it never pulled ...

Hello 5 rib- This is a little late but I've not been on the site for a while. Anyway, I purchased a 5 rib Firestar restoration project a couple years ago and thought I would repower it from a 447 to a ...

I just heard from the guy that bought my NEIUPORT back in Sept. I had used CUA 101 2 stroke oil in the 503 since right after breakin. About 200 hrs. Plugs always looked good-never any problems. The ne ...

If he is still in business, Danny Day of Colorado Ultralights ( can't remember the Address) used to sell 2 stroke oil CUA 101 a synthetic that I used in a Rotax 503 for 20 years. I started with a new ...

From what I have read and heard, A sudden engine out can also be caused by pulling the throttle back and entering a steep decent causing a lean mixture and cooling air.

Check out this webpage if you want to make your own fairings out of foam. http://chrusion.com/BJ7/Streamline/fairings.html

Hello guys,
I'm new to the site and to the world of Kolbs. I recently purchased a late 80's early 90's firestar (logs not to good) and I am planning a restoration over this winter. I've been planning ...