All the jets in the carby are fixed so you don't have any adjustment. Can you explain what the problem is that you have so I can help you through it?
I have a workshop manual for the motor but it will take some time before I am able to get to it as it has about 34 plus pages that I will need to scan.
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.