I found these on youtube, a bloke in the USA called EZGZ.
I found them very informative, so I thought they might be of interest to anyone else who has carbs and wasn't sure how to maintain and adjust them.
He rambles a bit, but it's great to see someone take them apart and tune them before you do it yourself.
Enjoy.
Steve

Dellorto and Weber calibration
- Solving Dual carb Linkage and accelerator pump issues
https://www.youtube.com/watch?v=iY7CgBjjLTw

Dellorto / Weber carb secrets #1
- This video covers venturi replacement in both.
http://youtu.be/uYNil8zC6Iw

Dellorto / Weber carb secrets #2
- A tabletop review of a dual throat 44 IDF weber carb. Discription of where and what the different adjustment screws and jets do.
http://youtu.be/vjM8OMURE8Y

Dellorto / Weber secrets #3
- Comparison of Weber and Dellorto carb jets and there location and operation
http://youtu.be/j9ob2y4L60s

Dellorto / Weber secrets #4
- Demonstration of how to find a blocked idle jet on car with engine running.
http://youtu.be/9-58n6JN78s

Dellorto/Weber cotton aircleaner maintenance #5
- Cleaning the air filter (DO NOT EVER USE COMPRESSED AIR to clean this style of filter.)
http://youtu.be/UAmFP6dVvJY

Dellorto/WeberIDF trouble shooting tips #6
- Tips for trouble-shooting Dellorto DRLA and IDF carburettors
http://youtu.be/ol9TzrdBQTg

Dellorto / Weber Carb Secrets #7
- Fuel pressure testing floats / seats. Leaks, levels and random tests
http://youtu.be/HpleZIndmQE

Dual Throat Delloroto Carburetor Won't Idle (Solutions) #8
- Troubleshooting a 45 Dual Throat Dellorto carburetor that has sat for 2 years without running. Tip's and idea's to look for.
http://youtu.be/8pDgxauguRY

This is a link to the entire playlist:
http://www.youtube.com/playlist?list=PL ... 3phzokddWL

Thanks for the share, u never know might come in handy

I really love this clip about messing with carbs - puts a smile on anyone's face - and has some classic quotes..

http://youtu.be/Gh3KZsPpJGA

He should have his own TV show

Helpful and useful Steve, cheers.