WEBER IDF CARBS

 
 

We trimmed the top of the carb so it would clear the filter element
and attached the fuelpump to the frame under the fueltank. I didn't
want to spend alot of time hiding the pump and the wiring because I
was getting impatient and wanted to start the bike. It turned out that the
throttle arm of the carb had twice as much travel as the throttle cable,
meaning that I could only open the carb halfway. Screw it, I put the
fueltank on, opened the fuelvalve, turned on the ignition (the fuelpump
makes a soft buzzing sound) and started kicking. A few kicks and it
runs! This actually starts easier than my old carb. We adjusted the idle
speed and tried again, although the throttle cable does not move
smoothly and will need some fixing. This time just 1 kick and it runs!

 

To fix the throttle cable situation I made a few measurements and a
quick sketch, and Aad made a little wheel to replace the throttle arm.
This way the mounting point for the outer cable can be in a fixed
position and the carb can be fully opened. Now it works fine and
I can concentrate on cleaning up the fuelline, wiring and pump.
This manifold is not mounted as close to the tank as it should be
because it is going to be put on Harry's bike and his engine is
mounted in an offset position so on his bike it will be perfect.
For my own bike I will make a slightly shorter manifold.