1 where is the adjustment for the fuel air mix
behind the little black grille between the carb and flywheel cowling. Has a plastic limiter cap stuck on it, remove it.
2 the foam ring around the air filter
3 the air filter
wash in slovent
either a small engine supply or Napa, etc
6 is there anyway to even up the steering levers
take the firewall out and pull the dust cups back on the master cylinder bores. Work the levers and see if the pistons get pushed out, near flush with the back of the bores. If not, disassemble and clean/replace piston and seals. Mine were just a little sludgy and I cleaned, although master cly kits are very cheap.
If the pistons are springing back fully, then adjust the linkage. You can adjust the threaded rod and locknut to take out unnecessary play. You will see a collar with set screw, that limits how far back the piston can move. Factory setting is flush with bore, I think. I set mine a 1/16 or 1/8 farther in the bore. You can pull the tops off the cylinders, and as long as it pushes some fluid out at the beginning of the braking stroke, you havn't gone in too far. This setting allows less play in the levers. My threaded rods were seized and I broke one, so go easy.
service manuals?
beaverdamargoatv
To Invent, you need a good imagination and a pile of junk. (Thomas Edison)