carb tuning starting point and spanner size Q's

[aznatama]

Setup:
Naraku Black Edition 21mm carb
Stage6 iron 70cc BBK kit
Stage6 pro replica pipe
Stock airbox w/ foam insert filter
current temps: 25-45deg F
Elevation: approx. sea level

What's a good starting point for the min jets? Id want to start a bit rich, but not too rich. carb comes with 90 stock, but I have 82~110 jets. Also, is there a general starting point for the low speed and idle jets?

Lastly, what size is the clutch nut? I have very few tools, so I'd like to be prepared before these parts come in next week so I can install them w/o issues. I have no way of getting to the hardware store, so any tool purchases will have to come via amazon and a 2day wait.

Thanks

[teddy554]

85 and go down most likely from there. Are you talking about the big one that holds the clutch to the torque drive if so most likely 39mm but could be a 38mm

[90GTVert]

I use a 38mm the large nut that holds the rear pulley together. The nut that holds the bell on should be 24mm.

[teddy554]

So i had it backwards lol

[aznatama]

woah... those are rather large sizes that I don't have sockets for... Would a plier wrench work? or would I need a large crescent wrench?

[90GTVert]

You may be able to do it with a plier wrench or crescent wrench for the big one. Worst part of it is that it's a really thin nut so it doesn't give you a lot to grab. The 24mm will likely need you to apply more force, so I'd spring for the socket if possible.

You can get a 24mm socket cheap enough to be worth having IMO (should be under $10). The 38mm is prob gonna end up $15-20.

Here's a way to get the rear pulley apart with a vice and oil filter wrench or strap wrench.
49ccscoot.proboards.com/thread/356/clutch-removal-disassembly-video

[aznatama]

I think a crescent would be fine for the smaller nut, but the clutch one... I have no access to, or a place to put a vice, so I'll have to try to use a crescent as well. This should be interesting.

[rupert]

With your clutch assembly in hand go to a vise, clamp onto that big nut (but not too hard as it is pretty thin and there is no sense collapsing it) take a strap wrench and turn the assembly, loosening the nut (but not removing it). Take out of the vise, flip over on your workbench and remove the nut, keeping in mind the assembly is spring loaded, and will fly apart!

Assuming you are changing the spring: make sure the spring you are installing is a decent fit, because if there is ANY binding (inside, or outside) it won't work right!