fuel level in the carburetor bowl

Tyler Hathaway wrote:

I am kind of curious about what was wrong with your old carb that made you get an entirely new one.

Lockwood is send new floats today.

The reason for carb replacements was that I can not get needle and seat to seal properly. I lapped seat,  replaced needle valve seat,  and nothing worked so that it would pass inverted seat pressure check per chapter 73. Old carb would not hold more than 3 psi.  tested new carb and it held up 6 psi with out opening. Installed and synced, runs good.

How do you lap the float needle seat?  Is there a video on that.   I hear your can get corrosion on the seat and that can cause a fuel leak do to not sealing off.  Thanks in advance for any info.

one Rotax shop suggested using q-tip and some sort of compound  (did not work). Someone used a pencil with lead exposed (did not work)  Tried using old needle valve with lapping compound (did not work).

One shop buys motorcycle seats and installs them in the aircraft carb (did not work for me following instructions that came from Bing). Rotax does not condone seat replacement. and does not sell seat. Probably does not condone lapping also, no video, no instructions.

New carb cured my rough and excessive mag check that previous owner had lived with for 200 hrs and two years. Still had new carb after fist flight  put a puddle on hangar floor after turning fuel valve on next day and then stopped .dripping.