Maico jetting specs - bing

[Stevo17]

Hi, can anyone suggest some baseline Bing jetting specs for an 83 490? (Reed valve motor). My carb appears to have what is a 4l or 41 needle which was raised by sitting on a washer 

Any advice would be welcome.

[Tim754]

Stevo..... The Good News,,,,, I have the stock specs for all Bings on all size Maicos on a PDF file.
                The maybe not so good news,,,,, They are in German......
PM me an email address and I will send them to you. File size three pages only . Cheers Tim754

[g465b]

wheelsmith article in mxa aug83 for83 490 advises    195 main    282-2 needle jet    6F2 needle   55 pilot

dirt bike article feb83   195 main   278-2 nj    4K-2 needle     60 pilot   and   2003 slide       32:1                    g.

[paul]

main  200
pilot  65
 needle jet2.80-2
slide  = 2003
needle 4k2
from the maico manual

[Stevo17]

Great, thanks Paul. I haven't been able to find a spider manual

[Stevo17]

Thanks g, seems like a couple if different recommendations. The dirt bike setting seems close to stock.

[Tim754]

Stevo there is a genuine 83, 250/490 spider set up manual finishing very soon on USA  ebay.
eBay item number:
161186799715

[Stevo17]

Hi Tim,  thanks for that info !  I will have a crack at it but they certainly sell for a premium ! cheers steve