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Overhaul of WEBER #3 (The original blog was written on 2nd Sep. 2007)





Finally I have started the disassembly of the WEBER.  I was a bit nervous in front of the removed WEBER, some goods for the overhaul (I got them at 100Yen store and DIY hardware store) and my treasury genuine workshop manual.  At first I started to disassemble the WEBER for #3 and #4 cylinders, which seemed to be bad condition because of the sticking acceleration pump.


According to the instruction in the workshop manual, I removed the top cover, idling jets, main jets, inlet valves and acceleration pump retainer valve.  


So far there was no problem.  However, the acceleration pump jet was sticking.  I couldn’t remove it… I decided to do it later.  I removed the choke jets, inspection screws, idling mixture screws and choke systems.  Finally I came to the sticking acceleration pump.  I removed the spring plate and pulled the pump….…but the sticking pump didn’t move!!!


I gave up today.  Next time I would like to try a chemical solvent that saw several articles on the web.  If somebody knows other good solution, please let me know.

The numbers of the removed jets were as follows.  (   ) is the numbers of the WEBER 40 DCOE 4 in the service manual.
- Idling Jet: 50 F8　（50）
- Main Jet: 135 F9　（127）
- Choke Jet: 65 F5　（65）
- Accel. pump Jet: Unknown　（35）

By the way, my WEBER was so dirty that I was very embarrassed!  I thought I should wash them in kerosene.

If someone knows a good way, please let me know.
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