Can't be too specific except these carbs are p[retty simple.If you give us your engine model number we can tell you who built the motor and you can use their repair specifics.
just bought a manual on c.d. off of ebay.its about 50 pages long.the return address is ;WW Products-136 s. Filmore-Coldwater,Mi. 49036 usa. i think it was like $12