I need to rebuild a Zenith 13859 carb. it has a adjustable main jet I could use a breakdown pic. and any advise and info...
Thank you
Hi ,
This may help,
I ran a modified Bendix on my 81FXEF, removed choke assembly and plugged and smoothed the mounting holes, polished the throat, drilled and polished all sharp corners in the fuel intake. Matched the intake manifold to it and had the adjustable mainjet fitted. Ran the mainjet 4 turns out and the low speed needle 1 1/4 turns out. Bike was stock 80cubes running forged manley pistons w/ 8.5 to 1 comp, manley valves, seals and guides. Used to eat Evo's for breakfast.